CN103562611B - Pipe fitting for connecting polypropylene pipe and metal pipe - Google Patents
Pipe fitting for connecting polypropylene pipe and metal pipe Download PDFInfo
- Publication number
- CN103562611B CN103562611B CN201280024347.9A CN201280024347A CN103562611B CN 103562611 B CN103562611 B CN 103562611B CN 201280024347 A CN201280024347 A CN 201280024347A CN 103562611 B CN103562611 B CN 103562611B
- Authority
- CN
- China
- Prior art keywords
- pipe
- counterpart
- housing
- polypropylene
- pipe fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 29
- -1 polypropylene Polymers 0.000 title claims abstract description 29
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 29
- 239000002184 metal Substances 0.000 title abstract description 11
- 229910052751 metal Inorganic materials 0.000 title abstract description 11
- 229910001092 metal group alloy Inorganic materials 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 14
- 229910000906 Bronze Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010974 bronze Substances 0.000 claims description 4
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 229910000928 Yellow copper Inorganic materials 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 abstract 1
- 239000003566 sealing material Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000003466 welding Methods 0.000 description 4
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 3
- 229910052683 pyrite Inorganic materials 0.000 description 3
- 239000011028 pyrite Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 241000167854 Bourreria succulenta Species 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000003624 transition metals Chemical group 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
- F16L47/24—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics for joints between metal and plastics pipes
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Branch Pipes, Bends, And The Like (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Gasket Seals (AREA)
Abstract
The present invention relates to a pipe fitting. A pipe fitting for connecting a polypropylene pipe and a metal pipe comprising: a hollow body made of polypropylene and having an integral element for connection to a polypropylene pipe, the opening of said element passing therethrough into the internal cavity of the body; and an insert in the form of a sleeve made of a metal alloy and having a tube section embedded in the body and a protruding tube section. The inner cavity of the insert communicates with the inner cavity of the body. The end face of the tube section of the insert, which is embedded in the body, has an annular groove, which is arranged in the vicinity of the inner surface, has an inner cylindrical side face, in which an annular element made of a solid, flexible sealing material is arranged, which is connected to the groove base and is compressed under a pressure corresponding to the compaction pressure of the body. Technical effects include expanding the range of pipe fittings, being able to connect to both polypropylene pipes and metal pipes, and improving the service life and safety of the pipes by reducing the likelihood of leakage.
Description
Technical field
The invention belongs to building field, more particularly to the pipe that can be connected with polypropylene pipe and metallic conduit simultaneously
Road accessory, the i.e. transition piece as accessory from polypropylene pipe to metallic conduit, such as T junction,
Cruciform joint, tap, connecting tube joint, delta connection, especially with wall-mounted union nut, pipeline mistake
Filter, valve, welding seat form with formed polypropylene pipe branch, as water system element or
The wall pieces being connected with blender.The water system of the building of some residential architectures and other different purposes and heating system
Above-mentioned pipe fitting can be used on the polypropylene pipe of system and metallic conduit.
Background technology
The known pipe fitting being connected with polypropylene pipe and metallic conduit is for being provided with for by polypropylene pipe
The externally threaded transition metal part connected with metallic conduit, it includes hollow body, and this hollow body is embedded in one
In the assembly parts of form of sleeve, this sleeve be made up of metal alloy and with the inner space (system of main body
Ekoplastik PPR, Balakrishnan company internal hot and cold water supply systems in 2009 and heating system catalogue,
Page 9, it is provided with outer metal threaded transition conduit).
Main body is integrally provided with the body lumen opened wide in the side contrary with counterpart position, to connect on it
Being provided with the polypropylene pipe of the nose section form of inside and outside cylindrical surface, this surface is mainly used in welding polypropylene
The housing of pipeline, and the end of polypropylene pipe housing is welded in nose section.Counterpart is provided with prominent tube
Point, its outer surface is provided with the threaded portion of tubulose to connect metallic conduit or metal tube.
The counterpart leading to main body on an internal surface has larger diameter portion, on its larger diameter portion and lean on
The counterpart of nearly smaller diameter portion is provided with groove recessed for above-mentioned larger diameter portion.Bigger
Diameter portion and groove are filled by polypropylene material, and this polypropylene material is arranged to flush with smaller diameter portion,
To form mechanical join domain.
In this region, when the temperature generating period of the medium transported changes, poly-third near counterpart
The mechanical interface of alkene layer is susceptible to depart from, (pyrite, bronze, no this is because polypropylene and metal combination part
Rust steel) thermal coefficient of expansion different.Polyacrylic separation and deformation in various degree, torsion load, pulling force are born
Lotus, pressure load can cause by main body and the seepage of the join domain of counterpart.The seepage of water can't be at once
Occur after equipment is installed, and may send out because of polyacrylic the most aging after the use of 3-5
The seepage of unboiled water.As a result, the micro chink between counterpart and main body may increase.
Seepage not only occurs in the pipe fitting with externally threaded transition metal part form, and occurs with poly-third
In the pipe fitting of the similar structures that alkene pipeline and metallic conduit connect, the especially mistake between metal insert and nut
Cross (page 9 of above-mentioned regulation), be provided with an angle of 90 degrees spider (the 10 of above-mentioned regulation of metal external thread
Page), and it is provided with the welding base (page 12 of above-mentioned regulation) of metal external thread.
Summary of the invention
The present invention has expanded the accessory of the pipeline for different application, and it can not only connect polypropylene pipe and gold
Metal conduit, and reliability can be improve by reducing the probability of seepage and extend useful life.
The above-mentioned technique effect of the present invention is joined by a kind of pipeline for connecting polypropylene pipe and metallic conduit
Part provides, comprising:
-the hollow shell be made up of polypropylene, it has and integrally-formed connects for connecting polypropylene pipe
Part, the hole of this connector and the inner space of housing;
-at least one form is the counterpart of the sleeve being made up of metal alloy, the inner chamber of described counterpart and shell
The inner chamber of body communicates, and described counterpart has the ledge of part and the tubulose being embedded in housing.
Being provided with ring-shaped groove near the part being embedded in the housing surface within it of counterpart, it has cylindricality
Inner surface.
In ring-shaped groove and with the position of its bottom connection, to be provided with the annular being made up of elastic compacting material close
Envelope element, it is compressed under the pressure corresponding to casing moulds pressure.
In a preferred embodiment, the degree of depth of ring-shaped groove is at least not less than being made up of elastic compacting material
The half of the thickness of ring-type element.
The elastic compacting material of ring-type element can be Ethylene-Propylene-Diene rubber, nitrile rubber, silicone rubber or
Fluorubber.
Counterpart can be made up of bronze, pyrite or rustless steel.
In a preferred embodiment, the part being embedded in housing of counterpart is provided with for the material with housing
Material forms other element of extra mechanism, radial rib the most on its outer surface and/or be positioned at end
Longitudinally projecting portion on face.
The prominent tubular portion of counterpart can be formed with external screw thread.This prominent tubular portion can be installed
On union nut.
Accompanying drawing explanation
It is provided with metal external thread part below by being formed as of can being connected with polypropylene pipe and metallic conduit
The object lesson of pipe fitting illustrates embodiments of the invention.
Fig. 1 shows the longitudinal sectional view of product.
Fig. 2 shows counterpart, is wherein provided with the annular section of potted component of elastic compacting material along longitudinally
It is partly broken off illustrating.
Detailed description of the invention
The pipe fitting of the present invention includes the housing 1 being made up of polypropylene.This housing 1 has inner chamber 2 and therewith
Shape all-in-one-piece is for connecting the connector 3 of polypropylene pipe (not shown), the hole 4 of connector 3 and housing
The inner chamber 2 of 1 connects.This housing 1 also includes counterpart, its form be by metal alloy (bronze, it is also possible to
Use pyrite or rustless steel) sleeve 5 made.
Counterpart 5 includes the mating part 6 embedded within the case 1, and the pipe stretched out with external screw thread 8
Shape part 7.The inner chamber 9 of counterpart 5 communicates with the inner chamber 2 of housing 1.Counterpart 5 be embedded into housing 1
In mating part 6 there is in end face 10 ring-shaped groove 12 being near the inner surface 11 of counterpart 5,
The ring-type element 13 being made up of elaxtic seal be positioned at ring-shaped groove and with its bottom connection.Ring-shaped groove
The degree of depth of 12 is at least not less than the half of the thickness of ring-type element 13.Preferably, the degree of depth of ring-shaped groove 12
Equal to the thickness of ring-type element 13 2-2.5 times.The encapsulant of ring-type element 13 can use ethylene-propylene
-diene rubber, nitrile rubber, silicone rubber or fluorubber.The cross section of ring-type element 13 can be circular, it is possible to
To be rectangle (including square) or other shape.The bottom of ring-shaped groove 12 can be to be formed with sidewall
Right angle, or rounding.
Ring-type element 13 is arranged in ring-shaped groove 12 with matched in clearance, and at the compression mould corresponding to housing 1
Being compressed under the pressure of power processed, this occurs in the manufacture process of injection machine.Ring-type element 13 eliminates air
Enter the probability of ring-shaped groove 12.The component 6 being embedded in housing 1 of counterpart 5 be provided with for
With the element that the material of housing forms extra mechanism, such as, it is located at the radial rib 14 of its outer surface,
For providing counterpart bonding strength within the case 1, and it is located at the longitudinally projecting portion 15(figure at end face 10
2), for providing counterpart 5 and the bonding strength of housing 1 by applying load torque.
After the use of 3-5, the micro chink between counterpart 5 and polypropylene casing 1 gradually expands, because of
This ring-type element 13 can become the obstacle of current.On the one hand the complicated shape of counterpart 5 makes it sending out
(in the inside of accessory, once there is surface seep in water level, water must be through to extend water route during raw seepage as much as possible
Cross all of groove could flow out).On the other hand, for the consideration of economic interests, in view of the material of counterpart
Price in polypropylene, therefore the size of counterpart 5 should minimize.
According to the present invention, the manufacture of all parts is carried out according to known technology by suitable material.
Above-mentioned example non-exclusive.As it has been described above, there is other connecting joint (T meeting claims
Shape joint, transition conduit, delta connection, cruciform joint, tap, connecting tube joint, angle coupling), pipe
Gathering of the suspension type element of road transport of filter, valve, welding seat, water distribution system or connection blender
Propylene pipes and metallic conduit.
Claims (5)
1. for connecting the pipe fitting of polypropylene pipe and metallic conduit, including: hollow housing, its tool
Having the connector for connecting polypropylene pipe that at least one is integrally-formed, the hole of described connector is with described
The inner space of housing;And at least one counterpart, its form is the sleeve being made up of metal alloy, in it
Chamber also inner chamber with described housing communicates, and has the part being embedded in described housing and prominent tube
Point,
Wherein, the part being embedded in described housing of described counterpart is provided with cannelure, described annular at end face
Groove is arranged on the vicinity of the inner surface of described counterpart, is wherein disposed with the annular being made up of elastic compacting material close
Sealing, described lip ring is compressed under the pressure of the molding pressure corresponding to described housing,
It is characterized in that, the degree of depth of described ring-shaped groove is at least not less than the half of the thickness of described ring-type element.
Pipe fitting the most according to claim 1, it is characterised in that the material of described ring-type element is
Ethylene-Propylene-Diene rubber, nitrile rubber, silicone rubber or fluorubber.
Pipe fitting the most according to claim 1, it is characterised in that described counterpart is by bronze, yellow
Copper or rustless steel are made.
Pipe fitting the most according to claim 1, it is characterised in that described counterpart be embedded in institute
State the part in housing and be provided with other element for forming extra mechanism with the material of described housing, bag
Include radial rib on its outer surface and/or the longitudinally projecting portion being positioned on end face.
Pipe fitting the most according to claim 1, it is characterised in that the prominent pipe of described counterpart
Shape part is provided with external screw thread.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011139198/06A RU2476754C1 (en) | 2011-09-26 | 2011-09-26 | Element of pipeline fittings capable of connection with polypropylene and metal pipes |
RU2011139198 | 2011-09-26 | ||
PCT/RU2012/000661 WO2013048287A1 (en) | 2011-09-26 | 2012-08-10 | Pipe fitting element for connecting a polypropylene pipe and a metal pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103562611A CN103562611A (en) | 2014-02-05 |
CN103562611B true CN103562611B (en) | 2016-08-17 |
Family
ID=47996071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201280024347.9A Expired - Fee Related CN103562611B (en) | 2011-09-26 | 2012-08-10 | Pipe fitting for connecting polypropylene pipe and metal pipe |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN103562611B (en) |
EA (1) | EA022334B1 (en) |
RU (1) | RU2476754C1 (en) |
UA (1) | UA106020C2 (en) |
WO (1) | WO2013048287A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5689916B2 (en) * | 2013-04-01 | 2015-03-25 | 株式会社ブリヂストン | Pipe fitting |
CN105697899A (en) * | 2016-03-18 | 2016-06-22 | 广东联塑科技实业有限公司 | Copper insert structure for preventing seepage |
CN105736865B (en) * | 2016-04-27 | 2017-10-03 | 东莞市卓益塑胶制品有限公司 | A kind of waterpipe couplings and water purifier |
US10744527B2 (en) | 2016-08-23 | 2020-08-18 | Viking Group, Inc. | Low torque sprinkler fitting and method of manufacture |
CN109357101A (en) * | 2018-12-06 | 2019-02-19 | 上海乔治费歇尔亚大塑料管件制品有限公司 | A large-diameter 3PE steel-plastic conversion pipe fitting and its manufacturing method |
CA3206616A1 (en) | 2021-02-17 | 2022-08-25 | Minimax Viking Research & Development Gmbh | Fire protection systems and methods using fire protection devices installed in pipe fittings with an internally housed seal member |
WO2024192457A1 (en) * | 2023-03-22 | 2024-09-26 | Henn Gmbh & Co Kg. | Connecting sleeve and method for producing a connecting sleeve |
Citations (10)
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US5509911A (en) * | 1992-11-27 | 1996-04-23 | Maxxim Medical, Inc. | Rotating adapter for a catheterization system |
CN1122886A (en) * | 1995-05-08 | 1996-05-22 | 陈启松 | Self-locking quick pipe connector |
GB2349929A (en) * | 1999-05-14 | 2000-11-15 | Hepworth Building Prod | Pipe fitting |
CN201159357Y (en) * | 2008-03-03 | 2008-12-03 | 南京菲时特管业有限公司 | Polypropylene copper insert for cold and hot water |
CN201202922Y (en) * | 2008-05-30 | 2009-03-04 | 浙江伟星新型建材股份有限公司 | Plastic pipe sealing joint |
CN201314419Y (en) * | 2008-12-18 | 2009-09-23 | 江苏唯益换热器有限公司 | Pipe joint for coolant side of plate-type heat exchanger |
RU96213U1 (en) * | 2009-10-19 | 2010-07-20 | Общество С Ограниченной Ответственностью "Альтерпласт" | COMBINED PLASTIC AND METAL FITTING FOR TRANSITION FROM PLASTIC PIPELINE TO METAL PIPELINE |
CN102095042A (en) * | 2009-12-15 | 2011-06-15 | 肖忠贤 | Cone-shaped sealing ring of plastic nut |
CN201964061U (en) * | 2011-04-15 | 2011-09-07 | 南京晨光集团有限责任公司 | Pipe connector for high-temperature and high-pressure fuel gas system |
RU108544U1 (en) * | 2011-03-09 | 2011-09-20 | Общество с ограниченной ответственностью "ПРОМСЕРВИС" | FITTINGS FOR POLYPROPYLENE PIPES MODERNIZED |
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ATE223012T1 (en) * | 1997-05-30 | 2002-09-15 | Oystertec Plc | CONNECTING ELEMENT FOR CONNECTING TUBULAR ELEMENTS |
CN2553225Y (en) * | 2002-07-18 | 2003-05-28 | 漆烨 | Special-purpose blocking composite copper-plastic pipe fitting for aluminium plastic pipe |
JP5401979B2 (en) * | 2008-12-25 | 2014-01-29 | 三菱樹脂株式会社 | Pipe fitting |
CN201462301U (en) * | 2009-07-30 | 2010-05-12 | 上海龙胜实业有限公司 | Improved plastic metal pipe fitting |
RU91130U1 (en) * | 2009-10-30 | 2010-01-27 | Общество С Ограниченной Ответственностью "Альтерпласт" | METAL FITTING CONNECTION ASSEMBLY WITH POLYPROPYLENE PIPE AND PARTS KIT FOR ITS ASSEMBLY |
-
2011
- 2011-09-26 RU RU2011139198/06A patent/RU2476754C1/en not_active IP Right Cessation
-
2012
- 2012-08-10 EA EA201300640A patent/EA022334B1/en not_active IP Right Cessation
- 2012-08-10 CN CN201280024347.9A patent/CN103562611B/en not_active Expired - Fee Related
- 2012-08-10 WO PCT/RU2012/000661 patent/WO2013048287A1/en active Application Filing
- 2012-08-10 UA UAA201310653A patent/UA106020C2/en unknown
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Publication number | Priority date | Publication date | Assignee | Title |
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US5509911A (en) * | 1992-11-27 | 1996-04-23 | Maxxim Medical, Inc. | Rotating adapter for a catheterization system |
CN1122886A (en) * | 1995-05-08 | 1996-05-22 | 陈启松 | Self-locking quick pipe connector |
GB2349929A (en) * | 1999-05-14 | 2000-11-15 | Hepworth Building Prod | Pipe fitting |
CN201159357Y (en) * | 2008-03-03 | 2008-12-03 | 南京菲时特管业有限公司 | Polypropylene copper insert for cold and hot water |
CN201202922Y (en) * | 2008-05-30 | 2009-03-04 | 浙江伟星新型建材股份有限公司 | Plastic pipe sealing joint |
CN201314419Y (en) * | 2008-12-18 | 2009-09-23 | 江苏唯益换热器有限公司 | Pipe joint for coolant side of plate-type heat exchanger |
RU96213U1 (en) * | 2009-10-19 | 2010-07-20 | Общество С Ограниченной Ответственностью "Альтерпласт" | COMBINED PLASTIC AND METAL FITTING FOR TRANSITION FROM PLASTIC PIPELINE TO METAL PIPELINE |
CN102095042A (en) * | 2009-12-15 | 2011-06-15 | 肖忠贤 | Cone-shaped sealing ring of plastic nut |
RU108544U1 (en) * | 2011-03-09 | 2011-09-20 | Общество с ограниченной ответственностью "ПРОМСЕРВИС" | FITTINGS FOR POLYPROPYLENE PIPES MODERNIZED |
CN201964061U (en) * | 2011-04-15 | 2011-09-07 | 南京晨光集团有限责任公司 | Pipe connector for high-temperature and high-pressure fuel gas system |
Also Published As
Publication number | Publication date |
---|---|
RU2476754C1 (en) | 2013-02-27 |
EA022334B1 (en) | 2015-12-30 |
CN103562611A (en) | 2014-02-05 |
WO2013048287A1 (en) | 2013-04-04 |
EA201300640A1 (en) | 2013-09-30 |
UA106020C2 (en) | 2014-07-10 |
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GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20171222 Address after: Brescia Italy Patentee after: Watanko Co., Ltd. Address before: Russia St Petersburg Patentee before: The husband of Pa Woaiduo Devi Qi Maine section |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20200810 |