CN201581523U - Partition wall structure with vermiculate fireproof plates - Google Patents

Partition wall structure with vermiculate fireproof plates Download PDF

Info

Publication number
CN201581523U
CN201581523U CN2009202607598U CN200920260759U CN201581523U CN 201581523 U CN201581523 U CN 201581523U CN 2009202607598 U CN2009202607598 U CN 2009202607598U CN 200920260759 U CN200920260759 U CN 200920260759U CN 201581523 U CN201581523 U CN 201581523U
Authority
CN
China
Prior art keywords
partition wall
vertical partition
plastic laminated
vermiculite
wall structure
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 - Lifetime
Application number
CN2009202607598U
Other languages
Chinese (zh)
Inventor
周国富
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lu Yuhuang Jin Jiancai (Heyuan) Co., Ltd.
Original Assignee
周国富
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 周国富 filed Critical 周国富
Priority to CN2009202607598U priority Critical patent/CN201581523U/en
Application granted granted Critical
Publication of CN201581523U publication Critical patent/CN201581523U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Building Environments (AREA)

Abstract

The utility model discloses a partition wall structure with vermiculate fireproof plates, which comprises a wall keel and wall surface plates connected on two sides of the wall keel. The wall surface plates are vermiculate fireproof plates. The partition wall structure adopts the vermiculate fireproof plates as the wall surface plates and has excellent fireproof property, fireproof fillers are filled in gaps in a wall body, and the fireproof fillers particularly adopt expansion vermiculate particles. As the partition wall structure is formed by the vermiculate fireproof plates and the light steel keel, each side of each vermiculate fireproof plate is 25mm, width of the light steel keel is 75mm, and the fireproof property of the partition wall structure achieves 309 min (over five hours). The partition wall structure can guarantee personal and property safety when people adopt the partition wall structure, effectively prevents fire spreading when in fire disaster, and saves precious time for fire fighting and fire suppression. Through popularization and application, the partition wall structure has good social benefit and economic benefit, is favorable for guaranteeing personal and property safety, improves fire protection grades of industrial, business and civil buildings, and is civil engineering for building a harmonious socialist society.

Description

Vertical partition wall structure with vermiculite PLASTIC LAMINATED
Technical field
The utility model relates to a kind of vertical partition wall structure, more particularly is meant the vertical partition wall structure with vermiculite PLASTIC LAMINATED.
Background technology
Vertical partition wall belongs to the big class of one in the indoor non-bearing compartment wall, is to finish the important component part that most doors structure layout is separated.Be widely used in office buildings (as intelligent office building, the government office space, office, financial institution, science and technology, in the office buildings of industries such as IT), public space is (as each showground, the subway station, the airport terminal, the passenger traffic building, physical culture, competition gymnasiums and stadiums, music, play the place, hospital, in the university institutes), industrial construction (as: standardization industrial premises, in laboratory or the research and development centre) and commercial space (as: supermarket, the sales field, large-scale general merchandise building, in the sale monopoly shop, and the hotel, the hotel, the restaurant, the public place of entertainment that crowds such as KTV comparatively gather).
The main material that is used for vertical partition wall at present is a glass, and the benefit of glass vertical partition wall only is that light transmission is strong, and it is little to take up room, and soundproof effect is poor, the fireproof performance defect of insufficient but it exists; At present except glass is done the vertical partition wall structure, the material that also has veneer and so on commonly used; And the material of veneer and so on does not have fireproof performance as the vertical partition wall structure, produces poison gas during burning and contains hazardous substances such as formaldehyde more.
Building adopts tower structure mostly, except the frame construction of girder and load bearing wall and so on, all can adopt the vertical partition wall structure mostly in the structure of building, not only comes across commercial building, also can be common in industry, the civilian construction.As seen vertical partition wall is the building structure that occupies larger specific gravity in the building, because the vertical partition wall structure of glass structure and plywood structure is only arranged in the prior art, do not have resistant to elevated temperatures fire-proof function, cause people when adopting the vertical partition wall of these structures, the person and property incur loss easily.When fire took place, because the fireproof performance of building is poor, brought disaster to very soon to the neighbours in the place of breaking out of fire, the fire resistance of vertical partition wall structure is low, article between adjacent room or pavilion are very fast to be caught fire by high temperatureization, causes The fire spreads quickly, puts out a fire untimely bigger fire to take place.
For example, 20: 27 on the 9th February in 2009, garden, Chinese Central Television (CCTV) new address, East 3rd Ring Road, Chaoyang District, Beijing City is at the attached cultural center of 30 multilayers building site, the building breaking out of fire of building, The fire spreads quickly.Big fire this time causes dead 7 people of 1 people injured, tens of hundred million yuan of estimated amounts of damage
Ensure people's the person and the safety of property, improve people's the commercialization and the fire rating of residential buildings, this is the very important people's livelihood engineering of building a harmonious socialist society, and all is a very important thing to collective to the individual to country.
Defective based on above-mentioned prior art, in order to increase the building fireproof performance, for the person and the property loss that reduces people, the inventor designs the vertical partition wall structure that a kind of novel employing PLASTIC LAMINATED is made, this vertical partition wall structure promptly can be applied to industry, commercial building, also can be used for civilian construction.
The utility model content
The purpose of this utility model is that this vertical partition wall structure promptly can be applied to industry, commercial building, also can be used for civilian construction in order to overcome the vertical partition wall structure that the deficiencies in the prior art provide a kind of novel employing vermiculite PLASTIC LAMINATED to make.
The technology contents of the vertical partition wall structure with vermiculite PLASTIC LAMINATED of the utility model is: the vertical partition wall structure with vermiculite PLASTIC LAMINATED, comprise body of wall keel and the metope sheet material that connects with body of wall keel both sides, it is characterized in that described metope sheet material is the vermiculite PLASTIC LAMINATED.
Its further technology contents is: the gap between described metope sheet material and the body of wall keel is provided with the fire prevention filler.
Its further technology contents is: described fire prevention filler is the expanded vermiculite particle.
Its further technology contents is: described fire prevention filler is the inorganic filler of rock wool, glass wool and/or aluminium silicate wool.
Its further technology contents is: the metope sheet material of body of wall keel both sides comprises the prefabricated panel that polylith is stitched together; Connecting between described metope sheet material and the body of wall keel is that hardware fastening connects.
Its further technology contents is: described metope sheet material is provided with the hardware fastening counterbore, and fill out and is provided with high-temp glue at described hardware fastening counterbore place.
Its further technology contents is: splicing place of described each prefabricated panel is provided with the fire prevention bonding agent.
Its further technology contents is: the metope plane materiel of described body of wall keel one or both sides comprises two layers or more vermiculite PLASTIC LAMINATED.
Its further technology contents is: described vertical partition wall is provided with seal connector with the conjunction plane of building wall or top board, body of wall keel on the conjunction plane are fixedly connected and insert the securing member of building wall or top board, and described securing member is pre-buried securing member, nailing or swell fixture.
Its further technology contents is: described vertical partition wall also is connected with the fire prevention furred ceiling in the both sides, upper end that connect with top board, and the fire prevention furred ceiling comprises furred ceiling PLASTIC LAMINATED and fire prevention filler; The connection place of fire prevention furred ceiling and vertical partition wall also is provided with channel.
The utility model beneficial effect compared with prior art is: the vertical partition wall of the utility model has adopted the metope sheet material of vermiculite PLASTIC LAMINATED as both sides, has excellent fireproof performance, simultaneously in the space between metope sheet material and body of wall keel, fill out and be provided with the fire prevention filler, especially adopted the expanded vermiculite particle; Fireproof performance is stronger, and the vertical partition wall structure so that vermiculite PLASTIC LAMINATED and the wide lightgage steel joist of 75mm of both sides 25mm are made reaches 309min (more than five hours) through detecting its fire resistance.The utility model is applied to the vertical partition wall structure with the vermiculite PLASTIC LAMINATED innovatively, and in interlayer, have additional the fire prevention filler, and be preferred version (also can adopt inorganic fillers such as rock wool, glass wool and/or aluminium silicate wool) with the expanded vermiculite particle, can make full use of offcut that the expanding vermiculite process produces or the uneven vermiculite granule of particle or vermiculite power and serve as the fire prevention filler; Thereby hew out the commercial application approach of a vermiculite product, help the development of vermiculite industry, and can ensure the person and property safety when people adopt vertical partition wall, prevent the fire spreading when fire takes place effectively, for valuable time is striven in fire-fighting, fire extinguishing, popularization of the present utility model and application have good social benefit and economic benefit, help ensureing the safety of people's the person and property, help improving the fire rating of people's industry, commerce and civilian construction, help building a harmonious socialist society.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the generalized section that the utlity model has the vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
Fig. 3 is the splicing place generalized section of nothing fire prevention filler that the utlity model has the vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED;
Fig. 4 is the splicing place generalized section that expanded vermiculite granules fireproof filler is arranged that the utlity model has the vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED;
Fig. 5 is the splicing place generalized section that rock wool fire prevention filler is arranged that the utlity model has the vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED;
Fig. 6 the utlity model has the nothing fire prevention filler of vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED and the splicing place generalized section that a side is provided with two layers of PLASTIC LAMINATED;
Fig. 7 is vertical partition wall structure specific embodiment and the connection place generalized section building wall that the utlity model has the vermiculite PLASTIC LAMINATED;
Fig. 8 is vertical partition wall structure specific embodiment and the generalized section that the end is provided with the fire prevention furred ceiling that connects top board that the utlity model has the vermiculite PLASTIC LAMINATED.
Description of reference numerals
1 body of wall keel, 2 metope sheet materials
3 fire prevention fillers, 4 tapping screws
5 tapping screw counterbores, 6 fire prevention furred ceilings
10 nailing 10A swell fixtures
11 sealing joint strips, 12 fluid sealants
13 dowel bars+fluid sealant 60 furred ceiling PLASTIC LAMINATED
61 fire prevention fillers (furred ceiling), 62 channels
A building wall B top board
The specific embodiment
In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment the technical solution of the utility model is further introduced and explanation, but be not limited to this.
As depicted in figs. 1 and 2, specific embodiment for the vertical partition wall structure with vermiculite PLASTIC LAMINATED of the utility model, a kind of vertical partition wall structure with vermiculite PLASTIC LAMINATED comprises body of wall keel 1 and the metope sheet material 2 that connects with body of wall keel both sides, and metope sheet material is the vermiculite PLASTIC LAMINATED; Gap between metope sheet material 2 and the body of wall keel 1 is provided with fire prevention filler 3 (also can other embodiment in fiery filler in the air).The preferred version of fire prevention filler 3 is the expanded vermiculite particle, also can be the inorganic filler (this type of inorganic filler has anti-fire action) of rock wool, glass wool and/or aluminium silicate wool etc.The metope sheet material of body of wall keel 1 both sides is made up of the prefabricated panel that polylith is stitched together.The prefabricated panel that has adopted has: thickness has 12mm, 15mm, 20mm, 25mm, 29mm and six kinds of specifications of 38mm, long * wide 2440mm * 1220mm and two kinds of specifications of 2100mm * 900mm are arranged, also can need to adopt various other dimensions according to using.Its quantity also can be selected according to the actual use needs of vertical partition wall or be set; Splicing place at the prefabricated panel of each piece is provided with the fire prevention bonding agent, adopts the body of wall keel as the transition attachment, as Fig. 3-cross-section structure shown in Figure 6 as splicing place how.Connecting between metope sheet material 2 and the body of wall keel 1 is that hardware fastening connects, and the quantity of hardware fastening and density need and be decided according to actual the use; For increasing the intensity of body of wall, can be coated with the fire prevention adhesive at the conjunction plane of body of wall keel and metope sheet material.Hardware fastening can adopt modes such as screw, iron nail, rivet, and its preferred version is a tapping screw 4.Metope sheet material is provided with tapping screw counterbore 5 on the tapping screw installing hole, establish high-temp glue (also can adopt the fire prevention adhesive) so that fill out at tapping screw counterbore place, to improve the fireproof performance of tapping screw.Body of wall keel 1 adopt lightgage steel joist mostly, and the structure of body of wall keel is the keel frame structure that many strip keel are formed; Keel frame is formed by horizontal keel and centre keel connection, and the connecting mode that adopts between each keel both can be riveted joint, also can be modes such as welding or screw attachment.A kind of fire-resistant test sample that the inventor manufactured experimently is: both sides adopt the thick vermiculite PLASTIC LAMINATED of 25mm as metope sheet material, inner body of wall keel adopt the lightgage steel joist of 75mm * 45mm * 0.8mm, be filled with the expanded vermiculite particle between the both walls panel material, adopt the tapping screw of M6 * 40mm to fix between metope sheet material and the body of wall keel, spacing is 300mm; The seam crossing of metope sheet material and tapping screw counterbore place adopt the fire prevention adhesive to smear seam and fill and lead up processing, adopt vertical the installation during fire resistance test, and after testing, fire resistance is 309min (more than five hours).
Fig. 3 to Fig. 5 is respectively the enforceable three kinds of modes of the utility model: do not have fire prevention filler, rock wool fire prevention filler and expanded vermiculite fire prevention filler.Fig. 3 is the enforcement structure of nothing fire prevention filler that the utlity model has the vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED, the filler because the inner space does not prevent fires, can be influential to refractory ability, can be by increasing the slab of vermiculite PLASTIC LAMINATED, to improve its refractory ability.Fig. 4 is the enforcement structure that the inner space that the utlity model has the vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED is provided with expanded vermiculite granules fireproof filler; Fig. 5 the utlity model has the enforcement structure that is provided with rock wool fire prevention filler within the vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED.
Fig. 6 the utlity model has the nothing fire prevention filler of vertical partition wall structure specific embodiment of vermiculite PLASTIC LAMINATED and the example structure that a side is provided with two layers of PLASTIC LAMINATED, that metope that wherein is provided with two layers of PLASTIC LAMINATED is used for emphasis fireproof space, by increasing the thickness of PLASTIC LAMINATED, to improve the refractory ability of vertical partition wall.
As shown in Figure 7 and Figure 8, vertical partition wall is provided with seal connector with the conjunction plane of building wall or top board, seal connector has sealing joint strip 11, smears fluid sealant 12 and 13 3 kinds of modes of seam band+fluid sealant of after coagulation, body of wall keel 1 on the conjunction plane are fixedly connected and insert the securing member of building wall A or top board B, and securing member is nailing 10 or swell fixture 10A.Vertical partition wall also is connected with fire prevention furred ceiling 6 in the both sides, upper end that connect with top board, fire prevention furred ceiling 6 comprises furred ceiling PLASTIC LAMINATED 60 and fire prevention filler 61; Fire prevention furred ceiling 6 also is provided with channel 62 with the connection place of vertical partition wall.Fig. 7 is vertical partition wall and the connection place generalized section of building wall; Fig. 8 is connect the generalized section that end be connected with fire prevention furred ceiling of vertical partition wall with top board.
In sum, the vertical partition wall of the utility model has adopted the metope sheet material of vermiculite PLASTIC LAMINATED as both sides, has excellent fireproof performance, in the space between metope sheet material and body of wall keel, fills out and is provided with the fire prevention filler simultaneously, has especially adopted the expanded vermiculite particle; Fireproof performance is stronger, the vertical partition wall structure made from vermiculite PLASTIC LAMINATED and the wide lightgage steel joist of 75mm of both sides 25mm, through detection its fire resistance reach 309min (minute).The utility model is applied to the vertical partition wall structure with the vermiculite PLASTIC LAMINATED innovatively, and in interlayer, have additional the fire prevention filler, and be preferred version (also can adopt inorganic fillers such as rock wool, glass wool and/or aluminium silicate wool) with the expanded vermiculite particle, can make full use of offcut that the expanding vermiculite process produces or the uneven vermiculite granule of particle or vermiculite power and serve as the fire prevention filler; Thereby hew out the commercial application approach of a vermiculite product, help the development of vermiculite industry, and can ensure the person and property safety when people adopt vertical partition wall, prevent the fire spreading when fire takes place effectively, for valuable time is striven in fire-fighting, fire extinguishing, popularization of the present utility model and application have good social benefit and economic benefit, help ensureing the safety of people's the person and property, help improving the fire rating of people's industry, commerce and civilian construction, help building a harmonious socialist society.
The above only further specifies technology contents of the present utility model with embodiment; so that the reader is more readily understood; but do not represent embodiment of the present utility model to only limit to this, any technology of doing according to the utility model is extended or recreation, all is subjected to protection of the present utility model.

Claims (10)

1. the vertical partition wall structure that has the vermiculite PLASTIC LAMINATED comprises body of wall keel and the metope sheet material that connects with body of wall keel both sides, it is characterized in that described metope sheet material is the vermiculite PLASTIC LAMINATED.
2. the vertical partition wall structure with vermiculite PLASTIC LAMINATED according to claim 1 is characterized in that the gap between described metope sheet material and the body of wall keel is provided with the fire prevention filler.
3. the vertical partition wall structure with vermiculite PLASTIC LAMINATED according to claim 2 is characterized in that described fire prevention filler is the expanded vermiculite particle.
4. the vertical partition wall structure with vermiculite PLASTIC LAMINATED according to claim 2 is characterized in that described fire prevention filler is the inorganic filler of rock wool, glass wool and/or aluminium silicate wool.
5. according to claim 1,2,3 or 4 described vertical partition wall structures, it is characterized in that the metope sheet material of body of wall keel both sides comprises the prefabricated panel that polylith is stitched together with vermiculite PLASTIC LAMINATED; Connecting between described metope sheet material and the body of wall keel is that hardware fastening connects.
6. according to claim 1,2,3 or 4 described vertical partition wall structures with vermiculite PLASTIC LAMINATED, it is characterized in that described metope sheet material is provided with the hardware fastening counterbore, fill out and be provided with high-temp glue at described hardware fastening counterbore place.
7. according to claim 1,2,3 or 4 described vertical partition wall structures, it is characterized in that splicing place of described each prefabricated panel is provided with the fire prevention bonding agent with vermiculite PLASTIC LAMINATED.
8. according to claim 1,2,3 or 4 described vertical partition wall structures with vermiculite PLASTIC LAMINATED, the metope plane materiel that it is characterized in that described body of wall keel one or both sides comprises two layers or more vermiculite PLASTIC LAMINATED.
9. according to claim 1,2,3 or 4 described vertical partition wall structures with vermiculite PLASTIC LAMINATED, it is characterized in that the described vertical partition wall and the conjunction plane of building wall or top board are provided with seal connector, body of wall keel on the conjunction plane are fixedly connected and insert the securing member of building wall or top board, and described securing member is pre-buried securing member, nailing or swell fixture.
10. the vertical partition wall structure with vermiculite PLASTIC LAMINATED according to claim 9 is characterized in that described vertical partition wall also is connected with the fire prevention furred ceiling in the both sides, upper end that connect with top board, and the fire prevention furred ceiling comprises furred ceiling PLASTIC LAMINATED and fire prevention filler; The connection place of fire prevention furred ceiling and vertical partition wall also is provided with channel.
CN2009202607598U 2009-11-26 2009-11-26 Partition wall structure with vermiculate fireproof plates Expired - Lifetime CN201581523U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202607598U CN201581523U (en) 2009-11-26 2009-11-26 Partition wall structure with vermiculate fireproof plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009202607598U CN201581523U (en) 2009-11-26 2009-11-26 Partition wall structure with vermiculate fireproof plates

Publications (1)

Publication Number Publication Date
CN201581523U true CN201581523U (en) 2010-09-15

Family

ID=42723521

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009202607598U Expired - Lifetime CN201581523U (en) 2009-11-26 2009-11-26 Partition wall structure with vermiculate fireproof plates

Country Status (1)

Country Link
CN (1) CN201581523U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106049790A (en) * 2016-07-27 2016-10-26 重庆奥滨实业有限公司 Installation technology and installation structure for thermal insulation system inside thermal insulation composite board building
CN110241936A (en) * 2019-07-22 2019-09-17 中建安装集团有限公司 A kind of subway engineering fire-resistant plugging device facilitating installation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106049790A (en) * 2016-07-27 2016-10-26 重庆奥滨实业有限公司 Installation technology and installation structure for thermal insulation system inside thermal insulation composite board building
CN110241936A (en) * 2019-07-22 2019-09-17 中建安装集团有限公司 A kind of subway engineering fire-resistant plugging device facilitating installation
CN110241936B (en) * 2019-07-22 2024-04-12 中建安装集团有限公司 Subway engineering fireproof plugging device convenient to install

Similar Documents

Publication Publication Date Title
CN201485996U (en) Gas fire-extinguishing explosion-proof light partition wall system
WO2007047318A3 (en) Structural wall panel assemblies
CN201581523U (en) Partition wall structure with vermiculate fireproof plates
CN202577827U (en) Heat preservation and fire protection integrating board
CN202266167U (en) Steel heat-insulated fire-check door
CN202990163U (en) Heat-preservation fireproof type partition wall structure
CN2825795Y (en) Rockwool sandwich fireproof panel
CN102352659B (en) Inorganic heat insulation wall
CN201850664U (en) Composite insulation board
CN203129896U (en) Cavity-type steel fireproof door
CN211549471U (en) Steel heat-insulation fireproof door
CN203742026U (en) High-strength facing-free wallboard
CN210597765U (en) Composite heat-insulation fireproof external formwork external thermal insulation system
CN209384436U (en) A kind of water proof thermal insulation wall structure
CN220285183U (en) Double-sided color steel sandwich roof board
CN202595913U (en) Warm-keeping and fireproof integration wall system
CN201206410Y (en) Fire door of perlite
CN202273323U (en) External wall flame-retarding heat-preserving section bar
CN220100284U (en) Portable fireproof building wallboard
CN211548255U (en) Beam fireproof structure between glass curtain wall layer
CN201432445Y (en) Fireproof decoration board
CN201447803U (en) Metal surface sandwiched composite plate
CN220849464U (en) Wood fireproof door filled with alumina fibers
CN211899238U (en) Light steel lightweight concrete wallboard
CN212105622U (en) Passive energy-saving steel composite door

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: LUYU HUANGJIN BUILDING MATERIAL (HEYUAN) CO., LTD.

Free format text: FORMER OWNER: ZHOU GUOFU

Effective date: 20110930

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 518048 SHENZHEN, GUANGDONG PROVINCE TO: 515700 HEYUAN, GUANGDONG PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20110930

Address after: 515700 butterfly Ridge Industrial City, Heyuan County, Guangdong, Dongyuan

Patentee after: Lu Yuhuang Jin Jiancai (Heyuan) Co., Ltd.

Address before: 168 No. three road 518048 Guangdong city of Shenzhen province Futian District Fuhua International Chamber of Commerce Center Room 609

Patentee before: Zhou Guofu

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100915