CN100384771C - No-baking light foamed heat insulating and sound isolating material and its production process - Google Patents

No-baking light foamed heat insulating and sound isolating material and its production process Download PDF

Info

Publication number
CN100384771C
CN100384771C CNB2006101041860A CN200610104186A CN100384771C CN 100384771 C CN100384771 C CN 100384771C CN B2006101041860 A CNB2006101041860 A CN B2006101041860A CN 200610104186 A CN200610104186 A CN 200610104186A CN 100384771 C CN100384771 C CN 100384771C
Authority
CN
China
Prior art keywords
slurry
heat insulating
active
flyash
product
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
Application number
CNB2006101041860A
Other languages
Chinese (zh)
Other versions
CN1887783A (en
Inventor
郑东风
郑春雷
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.)
Zheng Dongfeng
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CNB2006101041860A priority Critical patent/CN100384771C/en
Publication of CN1887783A publication Critical patent/CN1887783A/en
Application granted granted Critical
Publication of CN100384771C publication Critical patent/CN100384771C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/0605Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances by sublimating
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The present invention is one kind of no-baking light foamed heat insulating and sound isolating material and its production process. The no-baking light foamed heat insulating and sound isolating material has high activity fly ash, which is produced based on one other patent of the present inventor, as basic material and some other components. It has high water resistance, high strength, high fireproof performance and high stability.

Description

A kind of no-baking light foamed heat insulating and sound isolating material and production method thereof
Technical field
The present invention relates to a kind of foamed heat insulating sound insulation building material field, relate in particular to a kind of from coal-fired plant boiler smoke evacuation collected flyash be no-baking light foamed heat insulating and sound isolating material and the production method thereof that major ingredient is made.
Background technology
At present, light foamed heat insulating and sound isolating material that the normal temperature maintenance is produced is most for containing magnesium oxide and magnesium chloride is the magnesium cement foaming material of base-material, and its component is stopping composition basically with the ordinary fly ash, its shortcoming is that doping quantity of fly ash is low, cost is higher, and is not water-fast, yielding, belong to the air-setting material, instability, along with the lengthening of working life, intensity reduces gradually, be not suitable for also not being suitable for and doing outer wall material humid area and open-air the use.Therefore, on the building materials market, be subjected to the certain limitation of national policy.So, develop the no-baking light foamed heat insulating and sound isolating material and the production method thereof of a kind of water-tolerant, intensity height, good stability, become the important research direction of building material industry.
Summary of the invention
The objective of the invention is, utilizing the existing denomination of invention of the applicant is that the high-active flyash that the patent of invention technology of ZL00103328.X is produced is a base-material for " application of coal purification of combustion and concomitant product and product ", the patent No., be equipped with some other component, a kind of water-tolerant is provided, the intensity height, the no-baking light foamed heat insulating and sound isolating material of good stability.
Another object of the present invention is that a kind of method of producing above-mentioned materials is provided.
" application of coal purification of combustion and concomitant product and product " patented technology of the applicant is to adopt following technique means to realize.
The method of a kind of coal purification of combustion and generation concomitant product, it is characterized in that: in coal dust, add a kind of by containing the active silica material, unslaked lime, carbide slag, the silicon ash, rich iron substance, phosphorus containg substances, furnace phosphorus slag, desulfurization catalyst is mixed the burning thing by weight " ZLT " that form, " ZLT " mixes and burns the adsorbed close formation " affinity particles " after the mix grinding homogenizing by a certain percentage of thing and coal, this " affinity particles " sprays in coal-powder boiler or the cyclone furnace under the state of " gas-solid liquid suspension reaction " " affinity calcining ", makes the mass transfer of combustionmaterial, heat transmits, momentum transfer is the fastest." ZLT " mixes and burns thing and raw coal in the combustion processes of boiler of power plant, a series of physics, chemical transformation take place and forms various mineral.
The technical process of above-mentioned patented technology is: select materials, and---coal and ZLT mix and burn thing proportioning---pulverizer---Pulverized Coal Bin---machine supplying powder---fuel nozzle---in pulverized coal firing boiler " affine calcining "---concomitant product (" active fly ash " or " self-hardening property flyash ", " belite cement grog " and respective slag).According to this technical process, coal and ZLT mix the compound that burns after thing prepares and enter coal mill by transfer roller, ZLT is mixed burn thing and coal dust formation " affine particle " state.In above-mentioned method, mix the prescription that burns thing by adjusting ZLT, reduce the viscosity of reactant and ZLT and mix the fineness of burning " affine particle " that thing becomes with the coal mix grinding, can be with enrichment of active fly ash microballon and refinement.In aforesaid method, ZLT mixes the mixture that burns thing and coal and carries out " affinity calcining ", furnace temperature between 800-1340 ℃, just can generate the concomitant product that is rich in " Baily spy ", and reduce the content of the oxynitride in the flue gas simultaneously.
The concomitant product product that " application of coal purification of combustion and concomitant product and the product " technology of utilization is produced---high-active flyash has extremely significant advantage, and it contains following component, and its proportioning is:
Baily spy (Dicalcium Phosphate (Feed Grade)) C2S 5-75
(tricalcium aluminate) C3A 1-40
Aluminium ferrous acid four calcium C4AF 1-40
Loss on ignition 0-5
Above-mentioned coal purification of combustion produce the concomitant product product---high-active flyash can be used for making cement or concrete, after through superfine pulverizing (1 nanometer-3 micron), but production hi-tech cement or high-effective concrete.High-active flyash also can be used as the toughener of any gelling material.
So it is low to have carbon content at this high-active flyash of producing based on patent of invention " application of coal purification of combustion and concomitant product and product " technology, gelation, lateral reactivity height have important feature such as the hydraulicity, air-setting simultaneously.With concrete and foam material intensity height at a specified future date that this high-active flyash is made, long-term behaviour is stable, and water-fast, not yielding, cost is low.Can be made into the wall heat insulation material that is applicable to different condition such as outdoor and indoor, be widely used, meet the energy saving policy of national environmental protection and recycling economy.In the following content of the application's claims and specification sheets, this high-active flyash that the above-mentioned patented technology of utilizing me is produced abbreviates " high-active flyash " as.
First purpose of the present invention realizes with following technical proposals:
A kind of no-baking light foamed heat insulating and sound isolating material is characterized in that consisting of of it:
(1) levigated high-active flyash, 50-95%, should " high-active flyash " be meant: according to denomination of invention is the concomitant product of the Chinese invention patent generation of ZL00103328.X for " application of coal purification of combustion and concomitant product and product ", the patent No., its preparation method is " affinity calcining ", and the furnace temperature of " affinity calcining " is 800-1340 ℃; The concomitant product that " affinity calcining " back produces promptly is referred to as " high-active flyash ", it contains following components in weight percentage: Dicalcium Phosphate (Feed Grade) 5-75%, tricalcium aluminate 1-40%, aluminium ferrous acid four calcium 1-40%, aluminium ferrous acid calcium 1-30%, free lime 0.1-8%; " high-active flyash " is milled down to specific surface area with pulverizer is 3500-6500 square centimeter/gram, promptly alleged " levigated high-active flyash ";
(2) sulphur aluminium cement or sulphur aluminium cement clinker powder or high-alumina cement or high aluminium cement clinker powder, 4-45%;
(3) terra alba, 0.5-5%;
Above-mentioned three component sums are 100%, and ratio is weight percentage;
(4) mix water among the composite ash material of above three components, grey water volume ratio is 1: 0.35-1 stirs into slurry; With
(5) mix whipping agent in the above-mentioned slurry.
Described whipping agent is the positive lactic acid salt of animal protein foaming agent or rosin fat liquid or Sodium dodecylbenzene sulfonate solution or vinylformic acid or hexahydrobenzoic acid or phenylformic acid or magnesium metal.
Second purpose of the present invention realizes with following method:
(1) high-active flyash is carried out grinding, being milled to fineness, to reach specific surface area be 3500-6500cm 2/ g;
(2) by following weight percent combination ash material
Levigated high-active flyash: sulphur aluminium cement or sulphur aluminium cement clinker powder or high-alumina cement or high aluminium cement clinker powder: terra alba=50-95%: 4-45%: 0.5-5%;
(3) composite ash material is added the water stirring and do form slurry, grey water weight ratio is 1: 0.30-1;
(4) getting whipping agent and water is 1 with weight ratio: 8-50 puts into agitator, becomes the bubble slurry by the mechanical stirring physical blowing;
(5) slurry and bubble slurry are mixed with the volume percent of 20-80%: 80-20%, and stir;
(6) will be poured in the mould through the slurry that step (5) mix;
(7) get finished product through 20-30 days natural curing, or get finished product through 5-20 days normal temperature maintenance or high temperature maintenance.
The present invention has following technological merit:
1. the high-active flyash of producing with my " application of coal purification of combustion and concomitant product and product " patented technology is a raw material, has the hungry characteristics that carbon content is low, lateral reactivity is high, have the hydraulicity, air-setting simultaneously;
2. but the lagging material of various different purposes of field fabrication and shape;
3. production cost is low;
4. quality of finished product good: intensity height at a specified future date, long-term behaviour are stable, water-fast, not yielding, can be made into the wall heat insulation material that is applicable to different condition such as outdoor and indoor;
5. the finished product function is strong: sound-proofing properties is good, is 5-6 times of normal concrete.Heat-proof quality is good, for the 20-35 of normal concrete doubly.
6. the finished product shock resistance is strong, and finished product can be followed closely, saw, and can reprocess.
Embodiment 1
High-active flyash is put into the ball mill grinding, and fineness is specific surface area 5500cm 2/ g.
Prescription: 30 kilograms of levigate high-active flyashs, 6 kilograms of sulphur aluminium cement, 0.6 kilogram of gypsum powder, 24 kilograms in water.
Above batching is put into agitator in order stirred 2 minutes, stirring, it is standby to make slip.
Physical blowing: rosin fat liquid whipping agent is put into agitator with 3 kilograms in water for 0.3 kilogram foam back stand-by by mechanical stirring.
Slip and foam are put into agitator by 1: 1 volume ratio stir, be poured into after stirring in 1000 * 1000 * 90mm mould, the demoulding after 8 hours is put into 25 days aftershapings of normal temperature curing room and is finished product.
Embodiment 2
High-active flyash is put into the ball mill grinding, and fineness is specific surface area 5500cm 2/ g.
Prescription: 25 kilograms of levigate high-active flyashs, 2.5 kilograms of sulphur aluminium cement, 0.5 kilogram of gypsum powder, 14 kilograms in water.
Above batching is put into agitator in order stirred 2 minutes, stirring, it is standby to make slip.
Physical blowing: animal protein foaming agent is put into agitator with 4 kilograms in water for 0.3 kilogram foam back stand-by by mechanical stirring.
Slip and foam are put into agitator by 1: 1.5 volume ratio stir, be poured into after stirring in 1000 * 1000 * 60mm mould, the demoulding after 8 hours is put into 30 days aftershapings of normal temperature curing room and is finished product.
Embodiment 3
High-active flyash is put into the ball mill grinding, and fineness is specific surface area 6500cm 2/ g.
Prescription: 25 kilograms of levigate high-active flyashs, 22.5 kilograms of high-alumina cements, 2.5 kilograms of gypsum powders, 50 kilograms in water.
Above batching is put into agitator in order stirred 4 minutes, stirring, it is standby to make slip.
Physical blowing: Sodium dodecylbenzene sulfonate solution is put into agitator with 4.8 kilograms in water for 0.6 kilogram foam back stand-by by mechanical stirring.
Slip and foam are put into agitator by 4: 1 volume ratio stir, be poured into after stirring in 1000 * 1000 * 60mm mould, 40 ℃-60 ℃ curing room is put in the demoulding after 8 hours, and aftershaping was finished product in 20 days.
Embodiment 4
High-active flyash is put into the ball mill grinding, and fineness is specific surface 3500cm 2/ g.
Prescription: 25 kilograms of levigate high-active flyashs, 1 kilogram of high-alumina cement, 0.125 kilogram of gypsum powder, 9.405 kilograms in water.
Above batching is put into agitator in order stirred 2 minutes, stirring, it is standby to make slip.
Physical blowing: hexahydrobenzoic acid solution is put into agitator with 30 kilograms in water for 0.6 kilogram foam back stand-by by mechanical stirring.
Slip and foam are put into agitator by 4: 1 volume ratio stir, be poured into after stirring in 1000 * 1000 * 60mm mould, 80 ℃-100 ℃ curing room is put in the demoulding after 8 hours, and aftershaping was finished product in 5 days.

Claims (3)

1. no-baking light foamed heat insulating and sound isolating material is characterized in that: it consist of:
1) levigated high-active flyash 50-95%, should " high-active flyash " be meant: according to denomination of invention is the concomitant product of the Chinese invention patent generation of ZL00103328.X for " application of coal purification of combustion and concomitant product and product ", the patent No., its preparation method is " affinity calcining ", and the furnace temperature of " affinity calcining " is 800-1340 ℃; The concomitant product that " affinity calcining " back produces promptly is referred to as " high-active flyash ", it contains following components in weight percentage: Dicalcium Phosphate (Feed Grade) 5-75%, tricalcium aluminate 1-40%, aluminium ferrous acid four calcium 1-40%, aluminium ferrous acid calcium 1-30%, free lime 0.1-8%; " high-active flyash " is milled down to specific surface area with pulverizer is 3500-6500 square centimeter/gram, promptly alleged " levigated high-active flyash ";
2) sulphur aluminium cement or sulphur aluminium cement clinker powder or high-alumina cement or high aluminium cement clinker powder, 4-45%;
3) terra alba, 0.5-5%;
Above-mentioned three component sums are 100%, and ratio is weight percentage;
4) mix water among the composite ash material of above three components, grey water weight ratio is 1: 0.30-1 stirs into slurry; With
5) mix whipping agent in the above-mentioned slurry.
2. no-baking light foamed heat insulating and sound isolating material as claimed in claim 1 is characterized in that: described whipping agent is the positive lactic acid salt of animal protein foaming agent or rosin fat liquid or Sodium dodecylbenzene sulfonate solution or vinylformic acid or hexahydrobenzoic acid or phenylformic acid or magnesium metal.
3. method of making the described no-baking light foamed heat insulating and sound isolating material of claim 1, it is characterized in that: it is made up of following process steps:
1) high-active flyash is carried out grinding, being milled to fineness, to reach specific surface area be 3500-6500 square centimeter/gram;
2) by following weight percent combination ash material
Levigated high-active flyash: sulphur aluminium cement or sulphur aluminium cement clinker powder or high-alumina cement or high aluminium cement clinker powder: terra alba=50-95%: 4-45%: 0.5-5%;
3) composite ash material adds water and stirs and do form slurry, and grey water weight ratio is 1: 0.30-1;
4) getting whipping agent and water is 1 with weight ratio: 8-50 puts into agitator, becomes the bubble slurry by the mechanical stirring physical blowing;
5) slurry and bubble slurry are mixed with the volume percent of 20-80%: 80-20%, and stir;
6) will be poured into through the slurry that step 5) mixes in the mould;
7) get finished product through 20-30 days normal temperature maintenance, or get finished product through 5-20 days normal temperature maintenance or high temperature maintenance.
CNB2006101041860A 2006-08-04 2006-08-04 No-baking light foamed heat insulating and sound isolating material and its production process Expired - Fee Related CN100384771C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006101041860A CN100384771C (en) 2006-08-04 2006-08-04 No-baking light foamed heat insulating and sound isolating material and its production process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006101041860A CN100384771C (en) 2006-08-04 2006-08-04 No-baking light foamed heat insulating and sound isolating material and its production process

Publications (2)

Publication Number Publication Date
CN1887783A CN1887783A (en) 2007-01-03
CN100384771C true CN100384771C (en) 2008-04-30

Family

ID=37577063

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2006101041860A Expired - Fee Related CN100384771C (en) 2006-08-04 2006-08-04 No-baking light foamed heat insulating and sound isolating material and its production process

Country Status (1)

Country Link
CN (1) CN100384771C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107522438A (en) * 2016-06-21 2017-12-29 天津城建大学 A kind of fiber-reinforced composite insulation material and preparation method thereof
CN114804777B (en) * 2022-05-23 2023-03-07 张家口广建新材料有限公司 Lightweight core-pulling foam concrete inner partition board and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1294181A (en) * 1999-10-22 2001-05-09 郑春雷 Clean combustion of coal and application and products of its companion substance
CN1482099A (en) * 2003-06-21 2004-03-17 陈德余 300 stage pulverized coal ash heat preservation fireproof aerated concrete building block and method of production
JP2006045025A (en) * 2004-08-06 2006-02-16 Ube Ind Ltd Self-flowing hydraulic composition
CN1772693A (en) * 2005-10-09 2006-05-17 李凌伟 Self-leveling cement and its production process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1294181A (en) * 1999-10-22 2001-05-09 郑春雷 Clean combustion of coal and application and products of its companion substance
CN1482099A (en) * 2003-06-21 2004-03-17 陈德余 300 stage pulverized coal ash heat preservation fireproof aerated concrete building block and method of production
JP2006045025A (en) * 2004-08-06 2006-02-16 Ube Ind Ltd Self-flowing hydraulic composition
CN1772693A (en) * 2005-10-09 2006-05-17 李凌伟 Self-leveling cement and its production process

Also Published As

Publication number Publication date
CN1887783A (en) 2007-01-03

Similar Documents

Publication Publication Date Title
Duan et al. Investigation into the synergistic effects in hydrated gelling systems containing fly ash, desulfurization gypsum and steel slag
Chindaprasirt et al. Utilization of fly ash blends from pulverized coal and fluidized bed combustions in geopolymeric materials
Chindaprasirt et al. Utilization of blended fluidized bed combustion (FBC) ash and pulverized coal combustion (PCC) fly ash in geopolymer
EP2178806B1 (en) Construction material based on activated fly ash
CN107200486A (en) A kind of highly doped industrial residue cement and preparation method thereof
WO2020146551A1 (en) Activation of natural pozzolan and use thereof
JP2006515260A (en) Shearite two-component wet cement, method for producing and using the same
CN110304847A (en) A kind of wet-milling carbide slag exciting agent and its preparation method and application
Escalante-Garcia et al. Calcium sulphate anhydrite based composite binders; effect of Portland cement and four pozzolans on the hydration and strength
WO2014077251A1 (en) Cement composition and method for producing same
CN101016198A (en) Ultra-fine carbonate rock powder concrete composite blending material and preparing method thereof
CN102617074A (en) Method for preparing circulating fluidized bed fuel coal solid-state sulfur slag light concrete
Soriano et al. One-part blast furnace slag mortars activated with almond-shell biomass ash: A new 100% waste-based material
CN101445348A (en) Method for preparing sialite binding material with oil shale waste residues as main raw material
CN112661424A (en) Environment-friendly cement and preparation method thereof
JP2009114011A (en) Cement additive and cement composition
CN105130217B (en) The method that electrolytic manganese residues ecologic active slag is managed with shaft kiln factory and office
CN105801062A (en) Method for preparing self-leveling floor material from phosphorus solid waste
CN100384771C (en) No-baking light foamed heat insulating and sound isolating material and its production process
CN104986974A (en) Method for preparing ecological active residues by treating electrolytic manganese residues by virtue of rotary kiln plant
CN115368037B (en) Heat-resistant concrete cementing material and preparation method and application thereof
CN101948257B (en) General portland cement modifying agent containing high cementing property mineral C4A3* and application method thereof
CN101244582A (en) Novel technique for producing autoclaved air entrainment building block
JP2000281399A (en) Cement clinker and cement composition
CN102745919A (en) Preparation method of tailing micropowder portland cement

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Free format text: FORMER OWNER: ZHENG CHUNLEI

C41 Transfer of patent application or patent right or utility model
C53 Correction of patent of invention or patent application
C56 Change in the name or address of the patentee
CB03 Change of inventor or designer information

Inventor after: Zheng Dongfeng

Inventor before: Zheng Dongfeng

Inventor before: Zheng Chunlei

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 102218 4-801, BUILDING 54, WEST AREA 1, TIANTONGYUAN, CHANGPING DISTRICT, BEIJING TO: 100081 NO.12, UNIT 1, BUILDING 13, NO.A-2, WANSHOUSHI, HAIDIAN DISTRICT, BEIJING

Free format text: CORRECT: INVENTOR; FROM: ZHENG DONGFENG ZHENG CHUNLEI TO: ZHENG DONGFENG

CP03 Change of name, title or address

Address after: 100081 No. 1, building 13, building 2, Wanshou temple, Haidian District, Beijing, No. 12

Patentee after: Zheng Dongfeng

Address before: 102218, building 54, building 4-801, 1 West, Tiantongyuan, Beijing, Changping District

Co-patentee before: Zheng Chunlei

Patentee before: Zheng Dongfeng

TR01 Transfer of patent right

Effective date of registration: 20110307

Address after: 100081 No. 1, building 13, building 2, Wanshou temple, Haidian District, Beijing, No. 12

Patentee after: Zheng Dongfeng

Address before: 102218, building 54, building 4-801, 1 West, Tiantongyuan, Beijing, Changping District

Co-patentee before: Zheng Chunlei

Patentee before: Zheng Dongfeng

DD01 Delivery of document by public notice

Addressee: Zheng Dongfeng

Document name: Notification of Passing Examination on Formalities

DD01 Delivery of document by public notice

Addressee: Zheng Dongfeng

Document name: Notification to Pay the Fees

DD01 Delivery of document by public notice

Addressee: Zheng Dongfeng

Document name: Notification of Termination of Patent Right

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080430

Termination date: 20140804

EXPY Termination of patent right or utility model