CN107349542A - Put out a fire to save life and property the method for oil tank class fire - Google Patents

Put out a fire to save life and property the method for oil tank class fire Download PDF

Info

Publication number
CN107349542A
CN107349542A CN201610931970.2A CN201610931970A CN107349542A CN 107349542 A CN107349542 A CN 107349542A CN 201610931970 A CN201610931970 A CN 201610931970A CN 107349542 A CN107349542 A CN 107349542A
Authority
CN
China
Prior art keywords
fire
oil tank
extinguishing
save life
putting out
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.)
Pending
Application number
CN201610931970.2A
Other languages
Chinese (zh)
Inventor
谈龙妹
牟善军
王林
刘全桢
郎需庆
吴京峰
尚祖政
牟小冬
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.)
China Petroleum and Chemical Corp
Sinopec Qingdao Safety Engineering Institute
Original Assignee
China Petroleum and Chemical Corp
Sinopec Qingdao Safety Engineering Institute
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 China Petroleum and Chemical Corp, Sinopec Qingdao Safety Engineering Institute filed Critical China Petroleum and Chemical Corp
Priority to CN201610931970.2A priority Critical patent/CN107349542A/en
Publication of CN107349542A publication Critical patent/CN107349542A/en
Pending legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C3/00Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/06Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
    • A62C3/065Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products for containers filled with inflammable liquids
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62DCHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0007Solid extinguishing substances
    • A62D1/0014Powders; Granules

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Fire-Extinguishing Compositions (AREA)

Abstract

The present invention relates to a kind of method for oil tank class fire of putting out a fire to save life and property, and mainly solves the problems, such as that fire foam can not cover comprehensively in the short time in the prior art or foam is constantly exhausted by oil tank fire burning.Fire-extinguishing particulate is sprayed into OIL TANK FIRE by the present invention by using compressed nitrogen or compressed air or other inert gases, a kind of method for the oil tank class fire of putting out a fire to save life and property put out a fire.Fire-extinguishing particulate includes inner hollow or the solid inorganic material with honeycomb microporous structure, and the solid inorganic material is by modified expanded perlite, expanded vermiculite, hollow glass microbead or floating bead;The technical scheme that fire-extinguishing particulate carries out hydrophobic oleophobic surface modification treatment preferably solved into above mentioned problem, available in oil tank class fire of putting out a fire to save life and property.

Description

Put out a fire to save life and property the method for oil tank class fire
Technical field
The present invention relates to a kind of method for oil tank class fire of putting out a fire to save life and property.
Background technology
Tank fire is put out mainly using serial fire foam at present, has been played in storage tank fire extinguishing procedure huge Effect, but fire foam ability of anti-burning is poor, anti-resume combustion ability is relatively low.For large oil tank fire, fire it is lasting when Between may be up to a few hours even several days;Multi-injection foam is needed, if foam supply capacity is insufficient, it is impossible to which formation is effectively covered Lid, the then foam that early stage sprays can constantly rupture, and make the intensity of a fire out of hand, again resume combustion.Therefore, for oil tank class fire, need New extinguishing chemical is continually developed, existing defect is overcome, meets extinguishment requirement.
Most of inorganic light weight particles are a kind of cellular, porous and surface open-celled structure, high silicon content (general > 70%) mineral matter, has that nontoxic, tasteless, nonflammable, unit weight is small, thermal conductivity factor is small, chemical stability is good, sound insulation, source are wide The features such as general, often it is widely used in as insulation material on building.But light granules have very strong adsorptivity, easily Moisture around absorbing, and it is relatively low with the cohesive force of organic matter, and its intensity is relatively low, and it is broken in work progress.
In order to reduce the adsorption rate of light granules, increase its intensity, CN105645803A has invented a kind of aeroge expansion The preparation method of perlite, using waterglass as presoma, using expanded perlite as carrier, utilize sol-gel process and vacuum pressure Power impregnate full-cell process, by vacuum drying process by hydrophobic type aeroge fill or outsourcing be wrapped in expanded perlite it is compound and Into particle diameter is more than 0.05mm.The expanded perlite of the patent simply wraps up hydrophobic group to its appearance, and the production technology of use is only Its intensity is the increase in, and is unable to oleophobic, it is difficult to for putting out oil tank class fire.
CN103550898A is related to a kind of modified expanded glass bead extinguishing chemical, including 65~94.5 parts of expansion vitrification is micro- Pearl, 0.5~5 part of macromolecule wax, amino resins, organo-silicon coupling agent, organic silicon surfactant, fluorine-containing surfactant In a kind of or their mixture, 5~30 parts of anion surfactant, cationic surfactant, nonionic table A kind of or their mixture in the activating agent of face.The extinguishing chemical sprawls rapid, suspending stabilized, accumulation covering on pasta, With fire resistanttime it is long the advantages of.Classes of compounds is simply added in expanded and vitrified small ball by the patent respectively or all, shape Into a kind of extinguishing chemical, if being added thereto one kind, single hydrophobic or oleophobic can only be also played, it is impossible to hydrophobic oleophobic is fully achieved Property;If all adding, each compound can not dissolve each other completely, can produce layering and separate out, and to going out, oil tank fire is unfavorable, and cost is high.
CN201110172399 is related to a kind of oil product extinguishment hollow glass micropearl three-phase froth and preparation method thereof, and this three The component of phase foam is matched by following percentage by weight:8-15% general proteins fire foam and 3-10% hollow glass Microballon, surplus are water.Hollow glass micropearl used is hated oil processing through fluorine containing silane coupling agent and obtained.The three-phase bubble of the invention Foam in pasta by that can form form compact and stable solid overlayer during flame thermal radiation, its anti-burning and anti-resume combustion performance are better than common Protein foam extinguishing agent, and stability significantly improves.The three-phase froth that the patent is related to, can partly it defoam in actual applications, Hollow glass micropearl addition is bigger, and brokenly bubble rate is higher, influences extinguishing effect.
The content of the invention
The technical problems to be solved by the invention be in the prior art fire foam can not be covered comprehensively in the short time or The problem of foam is constantly exhausted by oil tank fire burning, there is provided a kind of method of new oil tank class fire of putting out a fire to save life and property, this method have resistance Only oil gas volatilization, prevent fire spreading, the advantages of oil reservoir and water layer surface can be floated over for a long time.
To solve the above problems, the technical solution adopted by the present invention is as follows:A kind of method for oil tank class fire of putting out a fire to save life and property, that is, adopt Fire-extinguishing particulate is sprayed into OIL TANK FIRE with compressed nitrogen or compressed air or other inert gases, oil tank is put out using fire-extinguishing particulate The method of class fire.Oil tank class fire is put out using fire-extinguishing particulate, the fire-extinguishing particulate includes inner hollow or with cellular The solid inorganic material of microcellular structure, the solid inorganic material are micro- for modified expanded perlite, expanded vermiculite, double glazing Pearl or floating bead;Fire-extinguishing particulate is subjected to hydrophobic oleophobic surface modification treatment, modifying agent is to include quaternary ammonium ion rR2R'N iodide Cation fluorine carbon surface active agent, cosolvent is alcohols, at least one of ethers, and activator is sodium hydroxide or hydroxide Potassium solution;The mass content of cation fluorine carbon surface active agent is 5%-25%;Cosolvent mass content is 15%-25%;It is living Agent mass content is 10%-30%.
In above-mentioned technical proposal, it is preferable that cation fluorine carbon surface active agent is perfluor caproamide oxypropyl trimethyl iodate Thing or perfluoropropene oxide amide groups iodide.
In above-mentioned technical proposal, it is preferable that alcohols is isopropanol or ethanol, and ethers is ethylene glycol monobutyl ether or diethylene glycol Butyl ether.
In above-mentioned technical proposal, it is preferable that the mass ratio of solid inorganic material and modifying agent is 1:1.
In above-mentioned technical proposal, it is preferable that the forming process of fire-extinguishing particulate is that inorganic solid particles are carried out into surface active Processing, modifying agent and cosolvent are added under agitation, carrying out fully reaction with inorganic solid particles mixes, finally by product micro- Dried in ripple baking oven, obtain a kind of fire-extinguishing particulate.
In above-mentioned technical proposal, it is preferable that using compressed nitrogen or compressed air or other inert gases by the fire extinguishing Grain is ejected on OIL TANK FIRE face, fire-extinguishing particulate it is shallow fall on pasta without being infected with oil, it is and not hydrophilic, form one layer of solid and cover Cap rock, prevent oil vapour to volatilize, cut off most of flame combustion.
The invention provides it is a kind of can swim in for a long time on fuel level, the fire extinguishing of inorganic light weight that complete oleophobic is hydrophobic Particle.The inorganic material such as expanded perlite, expanded vermiculite, hollow glass microbead, floating bead are all silicate materials, and its surface is in negative Electric charge, can be with strong bonded with cationic surfactant;Modified lightweight fire-extinguishing particulate is both hydrophobic and oleophobic.Therefore, this goes out When during fiery particle being in oily or in water, the surface of " clean " can be formed.When fire fighting, the fire-extinguishing particulate of injection it is shallow fall Without being infected with oil and water on pasta, one layer of solid overlayer is formd, prevent oil gas volatilization, control flame and continue to fire Burn, serve the effect of fire extinguishing.Its method is by the fire-extinguishing particulate using compressed nitrogen or compressed air or other inert gases Be ejected on OIL TANK FIRE face, fire-extinguishing particulate it is shallow fall it is oily, not hydrophilic without being infected with pasta, form the covering of one layer of solid Layer, prevents oil vapour to volatilize, cuts off most of flame combustion.In actual fire fighting, first ejecting extinguishing particle, then with bubble Foam extinguishing agent is puted out a fire to save life and property ember, solves that fire foam can not cover comprehensively in the short time or foam is constantly by oil tank fire burning consumption Most problem, while the fire-extinguishing particulate can prevent oil gas volatilization, prevent fire spreading, serve the effect of fire extinguishing.The fire extinguishing Particle not only oleophobic but also hydrophobic, can float over oil reservoir and water layer surface for a long time, be easy to clear up, achieve preferable technique effect.
Below by embodiment, the invention will be further elaborated, but is not limited only to the present embodiment.
Embodiment
Embodiment 1:
(1) percent mass ratio of raw material needed for fire-extinguishing particulate:
Expanded perlite 50%
Perfluor caproamide oxypropyl trimethyl iodide 5%
Isopropanol 15%
Sodium hydroxide solution 30%
(2) preparation method:
30% sodium hydroxide solution is added in jacketed reactor, 50% expanded perlite is added under stirring, Activated;5% perfluor caproamide oxypropyl trimethyl iodide and 15% isopropanol are added in material after activation, is stirred 60min is mixed, then plus water carries out cleaning drying to material, is finally dried at 105 DEG C, obtains a kind of described fire-extinguishing particulate. (3) extinguishing method:
In diameter 150cm tray for combustion, core intersection 4cm or so rubber industry solvent naphtha is added, after pre-burning 1min, Modified lightweight fire-extinguishing particulate is slowly sprayed into the food tray to catch fire with compressed nitrogen and put out a fire.When addition 185g fire-extinguishing particulates When the controllable intensity of a fire, when continuing to add to 225g, particle is put out a fire successfully after being all covered with kerosene face.
Embodiment 2:
(1) percent mass ratio of raw material needed for fire-extinguishing particulate:
Expanded vermiculite 50%
Perfluoropropene oxide amide groups iodide 25%
Ethanol 15%
Potassium hydroxide solution 10%
(2) preparation method:
10% potassium hydroxide solution is added in jacketed reactor, 50% expanded vermiculite is added under stirring, is stirred Mix and activated;25% perfluoropropene oxide amide groups iodide and 15% ethanol are added in material after activation, is stirred 60min is mixed, then plus water carries out cleaning drying to material, and the material of drying finally is imported into microwave oven, and (electric heating, steam heat Drying also can) in dry, obtain a kind of fire-extinguishing particulate.
(3) extinguishing method:
In diameter 150cm tray for combustion, core intersection 4cm or so 93# gasoline is added, after pre-burning 1min, with compression Modified lightweight fire-extinguishing particulate is slowly sprayed into the food tray to catch fire and put out a fire by air.When adding 205g fire-extinguishing particulates The intensity of a fire is controlled, when continuing to add to 248g, particle is put out a fire successfully after being all covered with kerosene face.
Embodiment 3:
(1) percent mass ratio of raw material needed for fire-extinguishing particulate:
Hollow glass microbead 50%
Perfluor caproamide oxypropyl trimethyl iodide 15%
Ethylene glycol monobutyl ether 15%
Sodium hydroxide solution 20%
(2) preparation method:
20% sodium hydroxide solution is added in jacketed reactor, it is micro- that 50% double glazing is added under stirring Pearl, stirring are activated;15% perfluor caproamide oxypropyl trimethyl iodide and 15% second two are added in material after activation Alcohol monobutyl ether, 60min is stirred, then plus water carries out cleaning drying to material, and the material of drying is imported in microwave oven Drying, obtains a kind of fire-extinguishing particulate.
(3) extinguishing method:
In diameter 150mm tray for combustion, core intersection 4mm or so rubber industry solvent naphtha is added, after pre-burning 1min, Modified lightweight fire-extinguishing particulate is slowly sprayed into the food tray to catch fire with compressed nitrogen and put out a fire.When addition 15.6g fire extinguishings Controllable intensity of a fire during grain, when continuing to add to 20.5g, particle is put out a fire successfully after being all covered with kerosene face.
Embodiment 4:
(1) percent mass ratio of raw material needed for fire-extinguishing particulate:
Floating bead 50%
Perfluoropropene oxide amide groups iodide 10%
Diethylene glycol monobutyl ether 15%
Potassium hydroxide solution 25%
(2) preparation method:
By 25% potassium hydroxide solution add jacketed reactor in, 50% floating bead is added under stirring, stir into Row activation;10% perfluoropropene oxide amide groups iodide and 15% diethylene glycol monobutyl ether are added in material after activation, 60min is stirred, then plus water carries out cleaning drying to material, finally imports in microwave oven the material of drying and dries, Obtain a kind of fire-extinguishing particulate.
(3) extinguishing method:
In diameter 150mm tray for combustion, core intersection 4mm or so 95# gasoline is added, after pre-burning 1min, with compression Modified lightweight fire-extinguishing particulate is slowly sprayed into the food tray to catch fire and put out a fire by air.When adding 19.6g fire-extinguishing particulates The controllable intensity of a fire, when continuing to add to 23.8g, particle is put out a fire successfully after being all covered with kerosene face.

Claims (6)

1. a kind of method for oil tank class fire of putting out a fire to save life and property, i.e., will fire extinguishing using compressed nitrogen or compressed air or other inert gases Grain sprays into OIL TANK FIRE, the method that oil tank class fire is put out using fire-extinguishing particulate.The fire-extinguishing particulate includes inner hollow or tool Have a solid inorganic material of honeycomb microporous structure, the solid inorganic material is modified expanded perlite, expanded vermiculite, in Empty glass microballoon or floating bead;Fire-extinguishing particulate is subjected to hydrophobic oleophobic surface modification treatment, modifying agent is to include quaternary ammonium ion rR2R' The cation fluorine carbon surface active agent of N iodide, cosolvent are at least one of alcohols, ethers, and activator is sodium hydroxide Or potassium hydroxide solution;The mass content of cation fluorine carbon surface active agent is 5%-25%;Cosolvent mass content is 15%- 25%;Activator mass content is 10%-30%.
2. the method for oil tank class fire of putting out a fire to save life and property according to claim 1, it is characterised in that cation fluorine carbon surface active agent is Perfluor caproamide oxypropyl trimethyl iodide or perfluoropropene oxide amide groups iodide.
3. the method for oil tank class fire of putting out a fire to save life and property according to claim 1, it is characterised in that alcohols is isopropanol or ethanol, ethers For ethylene glycol monobutyl ether or butyl.
4. the method for oil tank class fire of putting out a fire to save life and property according to claim 1, it is characterised in that solid inorganic material and modifying agent Mass ratio is 1:1.
5. the method for oil tank class fire of putting out a fire to save life and property according to claim 1, it is characterised in that the formation of fire-extinguishing particulate is will be inorganic Solid particle carries out surface activation process, adds modifying agent and cosolvent under agitation, is carried out with inorganic solid particles fully anti- It should mix, finally dry product in microwave oven, obtain a kind of fire-extinguishing particulate.
6. the method for oil tank class fire of putting out a fire to save life and property according to claim 1, it is characterised in that using compressed nitrogen or compressed air Or the fire-extinguishing particulate is ejected on OIL TANK FIRE face by other inert gases, fire-extinguishing particulate it is shallow fall on pasta without be infected with oil, It is again not hydrophilic, one layer of solid overlayer is formd, prevents oil vapour to volatilize, cuts off most of flame combustion.
CN201610931970.2A 2016-10-25 2016-10-25 Put out a fire to save life and property the method for oil tank class fire Pending CN107349542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610931970.2A CN107349542A (en) 2016-10-25 2016-10-25 Put out a fire to save life and property the method for oil tank class fire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610931970.2A CN107349542A (en) 2016-10-25 2016-10-25 Put out a fire to save life and property the method for oil tank class fire

Publications (1)

Publication Number Publication Date
CN107349542A true CN107349542A (en) 2017-11-17

Family

ID=60271324

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610931970.2A Pending CN107349542A (en) 2016-10-25 2016-10-25 Put out a fire to save life and property the method for oil tank class fire

Country Status (1)

Country Link
CN (1) CN107349542A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110870956A (en) * 2018-08-29 2020-03-10 中国石油化工股份有限公司 Storage tank fire extinguishing device and fire extinguishing method
CN113384833A (en) * 2020-03-11 2021-09-14 中国石油化工股份有限公司 Fire prevention and control and fire suppression method for petrochemical storage tank
CN116808499A (en) * 2023-06-27 2023-09-29 上海贡氪智能科技有限公司 Lithium ion battery fire extinguishing agent and preparation method and application thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102836516A (en) * 2011-06-24 2012-12-26 中国人民武装警察部队学院 Hollow glass bead three-phase foam for oil product extinguishment and preparation method for three-phase foam
CN105344056A (en) * 2015-11-04 2016-02-24 中国人民武装警察部队学院 Novel aqueous film forming anti-burning type foam extinguishing agent and preparing method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102836516A (en) * 2011-06-24 2012-12-26 中国人民武装警察部队学院 Hollow glass bead three-phase foam for oil product extinguishment and preparation method for three-phase foam
CN105344056A (en) * 2015-11-04 2016-02-24 中国人民武装警察部队学院 Novel aqueous film forming anti-burning type foam extinguishing agent and preparing method thereof

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
刘程等: "《表面活性剂应用手册》", 31 August 1995, 化学工业出版社 *
宋广瑞等: "《气体灭火系统》", 31 January 2015, 西南交通大学出版社 *
李本利等: "《消防技术装备》", 31 August 2014, 中国人民公安大学出版社 *
秘义行等: "《泡沫灭火技术》", 30 September 2016, 中国计划出版社 *
马培: "《食用菌废弃物在重金属废水处理中的应用》", 31 August 2016, 黄河水利出版社 *
高维英等: "全氟辛基季铵碘化物改性层状硅酸盐矿物的研究", 《化学研究与应用》 *
龚晓楠: "《地基处理手册》", 31 March 2001, 中国建筑工业出版社 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110870956A (en) * 2018-08-29 2020-03-10 中国石油化工股份有限公司 Storage tank fire extinguishing device and fire extinguishing method
CN113384833A (en) * 2020-03-11 2021-09-14 中国石油化工股份有限公司 Fire prevention and control and fire suppression method for petrochemical storage tank
CN113384833B (en) * 2020-03-11 2022-08-30 中国石油化工股份有限公司 Fire prevention and control and fire suppression method for petrochemical storage tank
CN116808499A (en) * 2023-06-27 2023-09-29 上海贡氪智能科技有限公司 Lithium ion battery fire extinguishing agent and preparation method and application thereof
CN116808499B (en) * 2023-06-27 2024-03-29 上海贡氪智能科技有限公司 Lithium ion battery fire extinguishing agent and preparation method and application thereof

Similar Documents

Publication Publication Date Title
CN107349542A (en) Put out a fire to save life and property the method for oil tank class fire
KR101726589B1 (en) Expanded mortar and method for fabricating thereof
CN107349551A (en) Fire-extinguishing particulate and preparation method thereof
WO2016153385A1 (en) Foam silica gel, method for applying and producing same
CN1051126A (en) Fire-extinguishing composite and extinguishing method
KR20150121328A (en) Mortar and method for fabricating thereof
CN107754200A (en) A kind of anti-resume combustion powder extinguishing agent and preparation method thereof
CN108530011A (en) A kind of silica aerogel fire prevention, waterproof, environment-friendly insulating cream
CN103288482B (en) Composite type diatomite flame-retardant foaming agent
JP2002037645A (en) Fine hollow aluminosilicate glass ball and its manufacturing method
KR102213003B1 (en) Expanded Polystyrene Foam Non-Combustible Composition, Method of Preparing the Same and Non-Combustible Expanded Polystyrene Foam Using the Same
CN106752143A (en) A kind of calcined diatomite Non-expansive fireproof paint
CN107349550A (en) Fire-extinguishing particulate modifying agent
CN104056384B (en) Meerschaum network gel foam mud fire-prevention extinguishing agent
CN103274745A (en) Bentonite compound type flame-retardant foaming agent
CN104083843B (en) Gypsum reticular gel foam mud fire prevention and extinguishing agent
CN104056385B (en) Vermiculitum network gel foam mud fire-prevention extinguishing agent
CN106700496B (en) A kind of flame-retardant sponge and preparation method thereof of fire prevention shoes
JP4436209B2 (en) Foamed silica gel and method for producing the same
EP3471841A1 (en) Composition for fire extinguishant
KR102144309B1 (en) Eco-friendly foam extinguishing agent composition
CN103274722A (en) Medical stone compound type flame-retardant foaming agent
CN104056407A (en) Diatomite mesh gel foam mud fire prevention and extinguishing agent
CN113200763B (en) Foaming composition, foaming agent, foam concrete and preparation method of foam concrete
CN104476892B (en) A kind of preparation method of fire-fighting foam composite plate

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20171117