CN201576033U - Three-phase charge control intelligent electric energy meter - Google Patents
Three-phase charge control intelligent electric energy meter Download PDFInfo
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- CN201576033U CN201576033U CN2009203503897U CN200920350389U CN201576033U CN 201576033 U CN201576033 U CN 201576033U CN 2009203503897 U CN2009203503897 U CN 2009203503897U CN 200920350389 U CN200920350389 U CN 200920350389U CN 201576033 U CN201576033 U CN 201576033U
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Abstract
The utility model discloses a three-phase charge control intelligent electric energy meter, which aims to expand functions of the existing three-phase charge control intelligent electric energy meter, and leads the existing three-phase charge control intelligent electric energy meter to be superior than standards of a China internet newest 1.0-level three-phase charge control intelligent electric energy meter. The three-phase charge control intelligent electric energy meter comprises a main control module, a power supply module, a clock module, an E-SAM key authentication module, a display module, an infrared/485 communication module, an on-off module, a storage module, a metering module, a pre-charging module and an alarming module, wherein the power supply module, the clock module, the E-SAM key authentication module, the display module, the infrared/485 communication module, the on-off module, the storage module, the metering module, the pre-charging module and the alarming control module are connected with the main control module, the metering module is provided with an electric energy metering unit and a required quantity metering unit, and the main control module is provided with an event recording unit, a charge control unit and a safety unit.
Description
Technical field
The utility model relates to a kind of three-phase expense control intelligent electric energy meter.
Background technology
Three-phase expense control intelligent electric energy meter is widely used in industry to be waited in each field.It is fairly simple that yet existing three-phase takes the most function of control intelligent electric energy meter, do not meet state and net up-to-date 1.0 grades of three-phases expense control intelligent electric energy meter technical manual, awaits further to improve.
The utility model content
The utility model discloses a kind of three-phase expense control intelligent electric energy meter, to expand the function of existing three-phase expense control intelligent electric energy meter, makes it to be better than the standard that up-to-date 1.0 grades of three-phases expense control intelligent electric energy meter is netted by state.
Three-phase that the utility model provides expense control intelligent electric energy meter comprises main control module and connected supply module, clock module, E-SAM key authentication module, display module, infrared/485 communication modules, power on/off module, memory module, metering module, pre-payment module and alarm module;
Described metering module comprises:
The electric energy metrical unit is used to measure forward meritorious, oppositely active energy and four-quadrant reactive energy, and add up at times that storage is total, point, peak, flat, paddy active energy and reactive energy, and active energy is measured in phase-splitting;
The demand metering unit is used for measuring two-way maximum demand in the slippage mode and reaches maximum demand at times;
Described main control module comprises:
Event recording unit is used for monitoring current data when out-of-limit at described metering units, with event mode record current event;
Take the control unit, be used for chargeing with realization alternately, when remaining sum in the pre-payment module is less than or equal to the warning amount of money of setting, send alerting signal with described pre-payment module; When the overdraw amount of money is lower than the overdraw thresholding amount of money of setting, send power-off signal, enable described power on/off module tripping operation; After the pre-payment module received the effectively continuous information of paying tariff, the superposition electricity charge also allowed the processing of closing a floodgate of described power on/off module;
Safe unit is used to call E-SAM key authentication module and carries out safety certification, with the CPU card that obtains new benefit or the information of radio-frequency card, judges that current input purchases whether the medium of electricity is the medium of appointment, if not, enable described alarm module outputting alarm; And with the current state information retrography to test card, to carry out safety monitoring.
The disclosed three-phase of the utility model takes the control intelligent electric energy meter, has functions such as electrical energy metering, data processing, monitoring in real time, control automatically, data presentation, information interaction.Have measuring accuracy height, stable performance, long, low in energy consumption, easy and simple to handle characteristics of life-span, be better than the standard that up-to-date 1.0 grades of three-phases expense control intelligent electric energy meter is netted by state, can be widely used in the electric energy metrical and the remote centralized meter-reading automation control area of power industry.
Description of drawings
Fig. 1 is the structural representation of the disclosed three-phase expense of the utility model embodiment control intelligent electric energy meter;
Fig. 2 is the three-phase and four-line direct current access type wiring diagram of electric energy meter shown in Figure 1;
Fig. 3 is that electric energy meter three-phase and four-line shown in Figure 1 is through mutual inductor access type wiring diagram.
Specific embodiment
Below in conjunction with Figure of description embodiment of the present utility model is done detailed description.
Net up-to-date 1.0 grades of three-phases expense control intelligent electric energy meter technical manual according to state, the utility model embodiment provides a kind of DTZY88 type three-phase intelligent type electric energy meter, as shown in Figure 1, this electric energy meter comprises main control module and connected supply module, clock module, E-SAM (Embedded Secure Access Module) key authentication module, display module, infrared/485 communication modules, power on/off module, memory module, metering module, pre-payment module, alarm module and photoelectric isolation module.
Above-mentioned supply module is mainly used in to functional modules such as above-mentioned metering module and main control modules and powers, and can also further adopt the standby power supply of the lithium battery of environment-friendly type as this electric energy meter.
When above-mentioned clock module is mainly used in the school, adopt built in hardware clock circuit with temperature compensation function; In-25～+ 60 ℃ temperature range: the clock accuracy≤± 1s/d (average error in long-time); Under reference temperature (23 ℃), the clock accuracy≤± 0.5s/d; And this clock module also has calendar, timing, leap year auto-conversion function.In the present embodiment, scope must not be greater than 5min during the acceptable broadcasting of this electric energy meter school, should avoid electric energy meter carry out freeze or settlement data unloading operation before and after carry out in 5 minutes; When correction time during greater than 5min, electric energy meter has only when carrying out the school by the scene.
Above-mentioned infrared/the RS485 communication module is equipped with two RS485 communication interfaces and an infrared interface, follow the DL/T 645-2007 agreement and the file of putting on record thereof based on the RS485 interface communication, follow the DL/T 645-2007 agreement and the file of putting on record thereof based on the communication of infrared interface, and, the Physical layer of infrared communication interface and RS485 communication interface is independent, and the damage of arbitrary communication channel does not influence the operate as normal of another channel.And realize the electrical isolation of communication interface and internal circuit effectively improving the stability that this electric energy meter moves by photoelectric isolation module.
Above-mentioned E-SAM key authentication module be mainly used in solid state medium or virtual medium to electric energy meter carry out the parameter setting, the electricity charge that prestore, when information is returned and is write and issue the remote control command operation, ESAM module by strictness is carried out safety certification, and is reliable to guarantee data transmission security.For example, when long-range main website/electricity-selling system sends control command to this electric energy meter, when for example carrying out billing operation, adopt the SM1 algorithm to carry out the encryption and decryption computing, after the success to be certified, in the transmission of carrying out data and processing.
Above-mentioned metering module comprises electric energy metrical unit and demand metering unit, this electric energy metrical unit is used to measure meritorious, reverse active energy of forward and four-quadrant reactive energy, and add up at times that storage is total, point, peak, flat, paddy active energy and reactive energy, and active energy is measured in phase-splitting; The demand metering unit is used for measuring two-way maximum demand in the slippage mode and reaches maximum demand at times.In the present embodiment, the requirement cycle of acquiescence is that 15min, slippage time are 1min, in the use, during situations such as the generation voltage circuit powers on, period conversion, zero clearing, clock adjustment, electric energy meter is from current time, carry out requirement according to the requirement cycle and measure, after first requirement cycle finishes, begin maximum demand at interval by slippage and measure.In cycle, do not do the record of maximum demand an incomplete requirement.This electric energy meter stores the maximum demand data of 12 name days, and manually (or using meter-copy device) zero clearing of maximum demand value, and the manual zero clearing of requirement needs by the zero clearing button and the password protection is arranged, to prevent unauthorized people's operation.This metering units also is provided with two cover tariff period and ladder electricity prices, can realize the automatic switchover of two cover tariff period by setting in advance the time, to enable another set of ladder electricity price and charge in that time point is set; In the present embodiment, every cover tariff period can be provided with 2 time zones the whole year, and 8 periods can be set in 24 hours, and the period minimum interval is 15 minutes, and the time spacer segment greater than the requirement periodic quantity of setting in the table, the period can cross over reset.In concrete charging process, can charge according to the ladder electricity price, also can charge according to greatest requirements etc., to adapt to the needs of zones of different different user, alleviate the sharp-pointed day by day imbalance between power supply and demand of China, improve the unbalanced phenomenon of power consumption.
In the present embodiment, above-mentioned metering module can adopt independently two-way computation chip, makes this intelligent power table have forward, reverse active energy function of measuring, and can the meritorious four-quadrant reactive energy of combination be set by software programming.And this electric energy meter also is provided with anti-shunt running logic module, guarantees the accuracy and the reliability of this metering module metering with this.
Above-mentioned display module is made up of devices such as display screen, LED, code translators, is used for showing that with Automatic Cycle and button dual mode shows the frequently-used data of electric energy meter, for example, information such as present clock, electric weight, programming state, fault.
Above-mentioned memory module is used to store the two-way total electric flux of 12 name days and the electric energy data of each rate, and the data conversion storage boundary constantly is the 24 o'clock the end of month (beginning of the month is when zero) or the moment of the integral point in 1 to 28 day every month; And the date and time data that are used to store two-way maximum demand, each rate maximum demand and the appearance thereof of 12 name days, the data conversion storage boundary constantly is the 24 o'clock the end of month (beginning of the month is when zero) or the moment of the integral point in 1 to 28 day every month, wherein the end of month unloading time, of that month maximum demand value return-to-zero automatically, other not unloadings of maximum demand value constantly, also not return-to-zero of maximum demand.In the present embodiment, after this electric energy meter electric source dead electricity, all data holding times relevant with clearing are no less than 10 years, and other data hold time is no less than 3 years.
Above-mentioned main control module is used for self program stored or the program called are loaded into internal memory, certainly carry out operation in an orderly manner to coordinate being attached thereto each mould, thus during the school of realizing this DTZY88 type three-phase intelligent type electric energy meter, freeze, check meter, data storage and zero clearing, signal output and functions such as demonstration, measurement, communication, safety certification, warning and logout.And this main control module is provided with DLL (dynamic link library), program switch and programming password, so that managerial personnel are provided with and prevent unauthorized personnel's criminal manipulation to other power consumption parameter except that the user purchases electrical information.Wherein, program switch adopts the button design, and only can touch program switch after opening seal; Then electric energy meter needs could carry out programming or other special operationals by the programming password authentification earlier, continuous 3 password input errors, and electric energy meter will be closed programing function 24 hours automatically; Under programmable state, if 240 minutes in without any operation, electric energy meter will be closed programming state automatically.In the present embodiment, this main control module if there is not operation in the programming continuous input error of password or the schedule time, is then closed programming state automatically after program switch is opened, and guarantees the security operated and the stability of electric energy meter operation with this.
In the present embodiment, above-mentioned main control module comprises event recording unit, expense control unit and safe unit.
Above-mentioned event recording unit is used for monitoring current data when out-of-limit (comprising the limit value that exceeds or be lower than setting) at above-mentioned metering units, with event mode record current event; And be provided with following subelement at least:
Subelement one is used for record programming total degree, the Data Identification of the moment of nearest 10 programmings, operator's code, programming item;
Subelement two, be used to write down the total degree of requirement zero clearing, the moment of nearest 10 requirement zero clearings, operator's code; In the present embodiment, all clear commands all have the safety practice that prevents that the unauthorized personnel from operating, as hardware programming switch, operator password or seal management etc.;
The moment, operator's code when subelement three, total degree when being used to write down the school, nearest 10 schools;
Subelement four is used to write down the total degree of each phase decompression, and nearest 10 decompressions take place constantly, the finish time and corresponding electric energy data information;
Subelement five is used to write down the total degree of each phase phase failure, and the moment, the finish time and corresponding electric energy data information take place in nearest 10 phases failure;
Subelement six is used to write down the total degree of each phase defluidization, and nearest 10 defluidizations take place constantly, the finish time and corresponding electric energy data information;
Subelement seven is used to write down the uneven generation of nearest 10 primary currents, the finish time and corresponding electric energy data;
Subelement eight is used for recording voltage and/or electric current negative phase sequence total degree, nearest 10 the generation moment, the finish time and corresponding energy value amount data thereof;
Subelement nine is used to write down the total degree of game clock lid and/or end button cover, generation, the finish time of nearest 10 game clock lid incident;
Subelement ten, the generation that is used for permanent recording electric energy meter zero clearing incident are constantly and the electric energy data during zero clearing;
Subelement 13 is used to write down the total degree of full decompression, and moment, the finish time, and the current value of correspondence take place nearest 10 full decompressions.
Optionally, can also add up the frequency and the cumulative time of above-mentioned each subelement record.
With reference to above-mentioned each record sub module recorded data, maintenance and managerial personnel can carry out data maintenance and management rapidly and efficiently in view of the above, help increasing work efficiency.
The above-mentioned control unit that takes is used for chargeing with realization alternately with the pre-payment module, when remaining sum in the pre-payment module is less than or equal to the warning amount of money of setting, sends alerting signal; When the overdraw amount of money is lower than the overdraw thresholding amount of money of setting, send power-off signal, the tripping operation of enable pass power-off modular; After the pre-payment module received the effectively continuous information of paying tariff, the superposition electricity charge also allowed the processing of closing a floodgate of power on/off module.
Above-mentioned safe unit is used to call E-SAM key authentication module and carries out safety certification, with the CPU card that obtains new benefit or the information of radio-frequency card, judges that current input purchases whether the medium of electricity is the medium of appointment, if not, enable above-mentioned alarm module outputting alarm; And with the current state information retrography to test card, to carry out safety monitoring.
In the present embodiment, as shown in Figures 2 and 3, above-mentioned three-phase expense control intelligent electric energy meter is provided with direct access and inserts two kinds of electric current access waies through mutual inductor; In the use, above-mentioned Alarm Unit also is used for when the electric energy meter operation exception, and output sound or light are reported to the police, and the main control unit code of will makeing mistakes is shown on the display module.
The disclosed three-phase of the foregoing description takes the control intelligent electric energy meter, has functions such as electrical energy metering, data processing, monitoring in real time, control automatically, data presentation, information interaction.Have measuring accuracy height, stable performance, long, low in energy consumption, easy and simple to handle characteristics of life-span, be better than the standard that up-to-date 1.0 grades of three-phases expense control intelligent electric energy meter is netted by state, can be widely used in the electric energy metrical and the remote centralized meter-reading automation control area of power industry.
More than; it only is preferred embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.
Claims (6)
1. a three-phase takes the control intelligent electric energy meter, it is characterized in that, comprise main control module and connected supply module, power on/off module, clock module, infrared/485 communication modules, E-SAM key authentication module, metering module, display module, memory module, pre-payment module and alarm module;
Described metering module comprises:
The electric energy metrical unit is used to measure forward meritorious, oppositely active energy and four-quadrant reactive energy, and add up at times that storage is total, point, peak, flat, paddy active energy and reactive energy, and active energy is measured in phase-splitting;
The demand metering unit is used for measuring two-way maximum demand in the slippage mode and reaches maximum demand at times;
Described main control module comprises:
Event recording unit is used for monitoring current data when out-of-limit at described metering units, with event mode record current event;
Take the control unit, be used for chargeing with realization alternately, when remaining sum in the pre-payment module is less than or equal to the warning amount of money of setting, send alerting signal with described pre-payment module; When the overdraw amount of money is lower than the overdraw thresholding amount of money of setting, send power-off signal, enable described power on/off module tripping operation; After the pre-payment module received the effectively continuous information of paying tariff, the superposition electricity charge also allowed the processing of closing a floodgate of described power on/off module;
Safe unit is used to call E-SAM key authentication module and carries out safety certification, with the CPU card that obtains new benefit or the information of radio-frequency card, judges that current input purchases whether the medium of electricity is the medium of appointment, if not, enable described alarm module outputting alarm; And with the current state information retrography to test card, to carry out safety monitoring.
2. three-phase according to claim 1 takes the control intelligent electric energy meter, it is characterized in that, described event recording unit comprises:
Subelement one is used for record programming total degree, the Data Identification of the moment of nearest 10 programmings, operator's code, programming item;
Subelement two, be used to write down the total degree of requirement zero clearing, the moment of nearest 10 requirement zero clearings, operator's code;
The moment, operator's code when subelement three, total degree when being used to write down the school, nearest 10 schools;
Subelement four is used to write down the total degree of each phase decompression, and nearest 10 decompressions take place constantly, the finish time and corresponding electric energy data information;
Subelement five is used to write down the total degree of each phase phase failure, and the moment, the finish time and corresponding electric energy data information take place in nearest 10 phases failure;
Subelement six is used to write down the total degree of each phase defluidization, and nearest 10 defluidizations take place constantly, the finish time and corresponding electric energy data information;
Subelement seven is used to write down the uneven generation of nearest 10 primary currents, the finish time and corresponding electric energy data;
Subelement eight is used for recording voltage and/or electric current negative phase sequence total degree, nearest 10 the generation moment, the finish time and corresponding energy value amount data thereof;
Subelement nine is used to write down the total degree of game clock lid and/or end button cover, generation, the finish time of nearest 10 game clock lid incident;
Subelement ten, the generation that is used for permanent recording electric energy meter zero clearing incident are constantly and the electric energy data during zero clearing;
Subelement 11, be used to write down each phase overload total degree, T.T. nearest 10 overladen duration;
Subelement 12 is used to write down the total degree of power down, the moment that nearest 10 power down take place and finish;
Subelement 13 is used to write down the total degree of full decompression, and moment, the finish time, and the current value of correspondence take place nearest 10 full decompressions.
3. three-phase according to claim 1 and 2 takes the control intelligent electric energy meter, it is characterized in that, described infrared/485 communication modules are equipped with 1 infrared communication interface and 2 RS485 communication interfaces, and the Physical layer of described infrared communication interface and RS485 communication interface is independent.
4. three-phase according to claim 3 takes the control intelligent electric energy meter, it is characterized in that, described three-phase expense control intelligent electric energy meter also is provided with photoelectric isolation module.
5. three-phase according to claim 1 and 2 takes the control intelligent electric energy meter, it is characterized in that, described three-phase expense control intelligent electric energy meter is provided with direct access and inserts two kinds of electric current access waies through mutual inductor.
6. three-phase according to claim 1 and 2 takes the control intelligent electric energy meter, it is characterized in that, described Alarm Unit also is used for when described electric energy meter operation exception, and output sound or light are reported to the police, and the described main control unit code of will makeing mistakes is shown on the described display module.
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| CN2009203503897U CN201576033U (en) | 2009-12-25 | 2009-12-25 | Three-phase charge control intelligent electric energy meter |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376026A (en) * | 2011-10-31 | 2012-03-14 | 冶金自动化研究设计院 | Industrial enterprise power utilization load optimizing system |
| CN102496210A (en) * | 2011-12-07 | 2012-06-13 | 石家庄科林电气股份有限公司 | Electric meter prepayment system |
| CN103033655A (en) * | 2011-10-08 | 2013-04-10 | 江阴长仪集团有限公司 | Intelligent electric energy meter with accurate timing module |
| CN103852608A (en) * | 2012-11-29 | 2014-06-11 | 张金茂 | Electricity meter |
| CN103995163A (en) * | 2014-05-13 | 2014-08-20 | 国家电网公司 | Prepayment watt hour meter by utilizing radio-frequency technology for communication and electric energy information processing method |
| CN104076198A (en) * | 2014-07-03 | 2014-10-01 | 国网河南省电力公司平顶山供电公司 | Maximum demand synchronous metering device for primary meter and secondary meter of transformer substation and metering method |
| CN104346876A (en) * | 2013-07-30 | 2015-02-11 | 海尔集团技术研发中心 | Wireless charging billing system and method |
| CN105184981A (en) * | 2015-10-19 | 2015-12-23 | 国家电网公司 | Intelligent charge control multifunctional power meter |
| CN105279857A (en) * | 2015-11-04 | 2016-01-27 | 国网山东省电力公司济南供电公司 | Remote fee control electric energy meter and remote fee cotrol system |
| CN106501599A (en) * | 2016-10-17 | 2017-03-15 | 国家电网公司 | Twin-core electric energy meter data exchange validity determines method and system and twin-core electric energy meter |
| CN107328970A (en) * | 2017-07-28 | 2017-11-07 | 国网山东省电力公司烟台供电公司 | Intelligent electric meter with manual telegram in reply function |
| CN108597123A (en) * | 2018-05-16 | 2018-09-28 | 广东电网有限责任公司 | A kind of three-phase remote is multi-functional to take control electric energy meter device |
| CN109581047A (en) * | 2018-12-03 | 2019-04-05 | 国网山东省电力公司乳山市供电公司 | A kind of method of arrearage power failure prior-warning device and application method, arrearage early warning |
| CN114913643A (en) * | 2022-04-20 | 2022-08-16 | 深圳市先行电气技术有限公司 | Single-phase electronic type prepayment electric energy meter with three control loops having time control function |
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2009
- 2009-12-25 CN CN2009203503897U patent/CN201576033U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033655A (en) * | 2011-10-08 | 2013-04-10 | 江阴长仪集团有限公司 | Intelligent electric energy meter with accurate timing module |
| CN102376026A (en) * | 2011-10-31 | 2012-03-14 | 冶金自动化研究设计院 | Industrial enterprise power utilization load optimizing system |
| CN102376026B (en) * | 2011-10-31 | 2015-08-05 | 冶金自动化研究设计院 | Industrial enterprise power utilization load optimizing system |
| CN102496210A (en) * | 2011-12-07 | 2012-06-13 | 石家庄科林电气股份有限公司 | Electric meter prepayment system |
| CN103852608A (en) * | 2012-11-29 | 2014-06-11 | 张金茂 | Electricity meter |
| CN104346876A (en) * | 2013-07-30 | 2015-02-11 | 海尔集团技术研发中心 | Wireless charging billing system and method |
| CN103995163A (en) * | 2014-05-13 | 2014-08-20 | 国家电网公司 | Prepayment watt hour meter by utilizing radio-frequency technology for communication and electric energy information processing method |
| CN104076198A (en) * | 2014-07-03 | 2014-10-01 | 国网河南省电力公司平顶山供电公司 | Maximum demand synchronous metering device for primary meter and secondary meter of transformer substation and metering method |
| CN105184981A (en) * | 2015-10-19 | 2015-12-23 | 国家电网公司 | Intelligent charge control multifunctional power meter |
| CN105279857A (en) * | 2015-11-04 | 2016-01-27 | 国网山东省电力公司济南供电公司 | Remote fee control electric energy meter and remote fee cotrol system |
| CN106501599A (en) * | 2016-10-17 | 2017-03-15 | 国家电网公司 | Twin-core electric energy meter data exchange validity determines method and system and twin-core electric energy meter |
| CN107328970A (en) * | 2017-07-28 | 2017-11-07 | 国网山东省电力公司烟台供电公司 | Intelligent electric meter with manual telegram in reply function |
| CN108597123A (en) * | 2018-05-16 | 2018-09-28 | 广东电网有限责任公司 | A kind of three-phase remote is multi-functional to take control electric energy meter device |
| CN109581047A (en) * | 2018-12-03 | 2019-04-05 | 国网山东省电力公司乳山市供电公司 | A kind of method of arrearage power failure prior-warning device and application method, arrearage early warning |
| CN114913643A (en) * | 2022-04-20 | 2022-08-16 | 深圳市先行电气技术有限公司 | Single-phase electronic type prepayment electric energy meter with three control loops having time control function |
| CN114913643B (en) * | 2022-04-20 | 2023-02-28 | 深圳市先行电气技术有限公司 | Single-phase electronic type prepayment electric energy meter with three control loops having time control function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING BANNER ELECTRIC CO., LTD. Free format text: FORMER NAME: BEIJING BONA ELECTRONIC CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 102208 Beijing 1033 mailbox, Longcheng garden, Beijing, Changping District Patentee after: BEIJING BANNER ELECTRIC MANUFACTURING CORPORATION Address before: 102208 Beijing 1033 mailbox, Longcheng garden, Beijing, Changping District Patentee before: Beijing Banner Electrical Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20100908 |