CN105831801B - A kind of reconstituted tobacco extracting solution purification technique - Google Patents

A kind of reconstituted tobacco extracting solution purification technique Download PDF

Info

Publication number
CN105831801B
CN105831801B CN201610246434.9A CN201610246434A CN105831801B CN 105831801 B CN105831801 B CN 105831801B CN 201610246434 A CN201610246434 A CN 201610246434A CN 105831801 B CN105831801 B CN 105831801B
Authority
CN
China
Prior art keywords
extracting solution
slurry
filter
clear water
bed layer
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.)
Active
Application number
CN201610246434.9A
Other languages
Chinese (zh)
Other versions
CN105831801A (en
Inventor
余红涛
徐广晋
刘建平
朱世华
关平
吕正峰
李正武
王忠泽
王焰
郭维平
杨旭
许江虹
况志敏
陈静
宋俊翔
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 Tobacco Yunnan Reconstituted Tobacco Co Ltd
Original Assignee
China Tobacco Yunnan Reconstituted Tobacco Co Ltd
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 Tobacco Yunnan Reconstituted Tobacco Co Ltd filed Critical China Tobacco Yunnan Reconstituted Tobacco Co Ltd
Priority to CN201610246434.9A priority Critical patent/CN105831801B/en
Publication of CN105831801A publication Critical patent/CN105831801A/en
Application granted granted Critical
Publication of CN105831801B publication Critical patent/CN105831801B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/24Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00Preparing tobacco in the factory
    • A24B3/14Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Abstract

A kind of reconstituted tobacco extracting solution purification technique, clear water slurry or extracting solution slurry is obtained with clear water pulping or with tobacco material extracting solution pulping, clear water slurry or extracting solution slurry stock pump are transported in board-like closed leaf-type filter, filter bed layer are formed on filter screen surface;Again extracting solution extracting solution slurry is transported to stock pump in the board-like closed leaf-type filter for formed filter bed layer carries out filtration, purification, extracting solution after purification is collected in clear liquid storage tank, use for subsequent concentration, the enriching section that the extracting solution after purification delivers to reconstituted tobacco production technology is carried out into concentration production finally.The present invention is to reconstituted tobacco extracting solution good purification, and does not form waste material slag, clean environment firendly.The simple maintenance easy to maintain of process equipment, system operation expense are low.

Description

A kind of reconstituted tobacco extracting solution purification technique
Technical field
The invention belongs to papermaking-method reconstituted tobaccos production technical field.
Background technology
The current production method of country's papermaking-method reconstituted tobaccos, be using the tobacco leaf fragment produced in cigarette processing process and Cabo and other non-tobacco fibers are used as raw material, the solid content after solvent extraction, extracting solution concentration are done coating fluid, extracted The production procedures such as painting, dry and cutting is returned through beating, molding of manufacturing paper with pulp, coating fluid using the technological principle of paper process, acquisition can For the reconstituted tobacco that cigarette industry is used.Extracting solution wherein after solvent extraction will carry out purified treatment.Existing extracting solution is net Change processing method is mainly combined with centrifuge using vibrosieve and is processed or settled using addition chemical floc again The methods such as process.Being combined with centrifuge using vibrosieve carries out solid-liquid separation, first carries out preliminary solid-liquid to extracting solution with vibrosieve Separating, removing larger solid particle, then solid-liquid separation is further carried out with centrifuge, vibrosieve is carried with centrifuge combined treatment Liquid is taken, treatment effect is undesirable, and equipment and maintenance cost are high.Using adding chemical floc to carry out settlement treatment again, locate The reason time is long, is unfavorable for organization of production and coordination.Additionally, the material residue intractability after existing method is processed is big.
The content of the invention
The purpose of the present invention precisely in order to solve that prior art is present not enough and to provide a kind of reconstituted tobacco extracting solution net Chemical industry skill, processes difficult with material residue after solving poor reconstituted tobacco production process extracting solution depuration quality, equipment operating cost height, processing The problems such as spending big.
The purpose of the present invention is achieved by the following technical solution.
A kind of reconstituted tobacco extracting solution purification technique, method and step are as follows:
(1) pulping:With clear water pulping or with tobacco material extracting solution pulping;The clear water pulping is to measure wood-pulp board After weighing, using hydrabrusher, wood-pulp board is discongested into process with clear water, obtain clear water slurry;The tobacco material is extracted Liquid pulping, be by wood-pulp board metering weigh after, using hydrabrusher, wood-pulp board is discongested into process with tobacco material extracting solution, Obtain extracting solution slurry;Clear water slurry enters the first slurry can, adjustment clear water stock quality concentration to 0.3%-2%;Extracting solution Slurry enters the second slurry can, adjustment extracting solution stock quality concentration to 0.3%-2%;
(2) do filter bed layer:Clear water slurry or extracting solution slurry stock pump are transported in board-like closed leaf-type filter, Filter screen surface forms filter bed layer;When doing filter bed layer with clear water slurry, filtrate is transmitted back to clean water tank;Use extracting solution slurry When doing filter bed layer, filtrate is transmitted back to extraction liquid storage tank, when the filter bed layer of formation process requirement thickness on filter screen and completely After sufficient filtering accuracy is required, stop supplying to starch and remaining slurry is recycled to the first slurry can or the second storage slurry respectively in filter of draining Tank;
(3) purify extracting solution:Extracting solution or extracting solution slurry stock pump obtained in above-mentioned steps (1) are transported to and are formed Filtration, purification is carried out in the board-like closed leaf-type filter of filter bed layer, solid particle and float in extracting solution is removed, is filtered Extracting solution after clear liquid afterwards is purified is collected in clear liquid storage tank, is used for subsequent concentration, when board-like closed leaf-type filter When operating pressure reaches 0.3Mpa-0.4Mpa, stop for starching and in filter of draining remaining slurry be recycled to the second slurry can or Liquid storage tank is extracted, the filter bed layer on filter screen is removed;
(4) concentrated extracting solution:The enriching section that extracting solution Jing after step (3) purification delivers to reconstituted tobacco production technology is entered Row concentration production.
The present invention step (3) can be removed from board-like closed leaf-type filter filter screen the filter bed layer for getting off is delivered to and reproduce cigarette The extraction section of leaf production technology carries out extraction production.
Present invention optimizes the extracting solution purification technique in existing papermaking-method reconstituted tobaccos production process, reconstituted tobacco is given birth to The wood pulp for producing raw material is applied to papermaking-method reconstituted tobaccos production process as the filtering technique of medium, can effectively solving production process In practical problem, and filter after wood pulp can be directly used for production.The present invention at least has advantages below:
A. reconstituted tobacco extracting solution good purification;
B., after extracting solution purification, waste material slag, clean environment firendly are not formed;
C. system run all right, the simple maintenance easy to maintain of equipment;
D. system operation expense is low.
Description of the drawings
Fig. 1 is present invention process flow chart.
Specific embodiment
Present invention is expanded on further with reference to Fig. 1.
Embodiment 1
A kind of reconstituted tobacco extracting solution purification technique, method and step are as follows:
(1), after weigh wood-pulp board metering, using a hydrabrusher, obtain after wood-pulp board is discongested process with clear water Clear water slurry, and the first slurry can is sent into, adjustment clear water stock quality concentration to 0.3%-2%;
(2), after weigh wood-pulp board, using a hydrabrusher, wood-pulp board is discongested into process with tobacco material extracting solution After obtain extracting solution slurry, and send into the second slurry can, adjustment extracting solution stock quality concentration to 0.3%-2%;
(3) clear water slurry stock pump obtained in step (1) is transported in board-like closed leaf-type filter, is filtering machine filter Net surface forms filter bed layer, and filtrate is transmitted back to clean water tank, and the filter bed layer for requiring thickness when formation process on filter screen is simultaneously After meeting filtering accuracy requirement, stop supplying to starch and remaining slurry is recycled to the first slurry can in filter of draining;
(4) extracting solution slurry stock pump obtained in step (2) is transported to the board-like closed blade mistake for forming filter bed layer Filtration, purification is carried out in filter, solid particle and float in extracting solution is removed, the clear liquid after filtration is i.e. after purification Extracting solution is collected in clear liquid storage tank, is used for subsequent concentration, when filter operating pressure reaches 0.3-0.4Mpa, stops supplying Remaining slurry in filter of starching and drain is recycled to the second slurry can, removes the filter bed layer on filter screen;
(5) extracting solution by step (4) after purification, the enriching section for delivering to reconstituted tobacco production technology carry out concentration life Produce.The extraction section that the filter bed layer removed delivers to reconstituted tobacco production technology is carried out into extraction production.
Embodiment 2
A kind of reconstituted tobacco extracting solution purification technique, method and step are as follows:
(1), after weigh wood-pulp board metering, using a hydrabrusher, obtain after wood-pulp board is discongested process with clear water Clear water slurry simultaneously sends into the first slurry can, adjustment clear water stock quality concentration to 0.3%-2%;
(2) clear water slurry stock pump obtained in step (1) is transported in board-like closed leaf-type filter, is filtering machine filter Net surface forms filter bed layer, and filtrate is recycled to clean water tank, and the filter bed layer for requiring thickness when formation process on filter screen is simultaneously After meeting filtering accuracy requirement, stop supplying to starch and remaining slurry is recycled to the first slurry can in filter of draining;
(3) extracting solution is transported to stock pump in the board-like closed leaf-type filter for formed filter bed layer carries out filtering net Change, remove the solid particle and float in extracting solution, extracting solution of the clear liquid after filtration i.e. after purification collects clear liquid In storage tank, use for subsequent concentration, when filter operating pressure reaches 0.3-0.4Mpa, stop for starching and draining in filter Remaining extracting solution is recycled to extraction liquid storage tank, removes the filter bed layer on filter screen;
(4) extracting solution by step (3) after purification is delivered to the enriching section of reconstituted tobacco production technology and carries out concentration life Produce.The extraction section that the filter bed layer removed delivers to reconstituted tobacco production technology is carried out into extraction production.
Embodiment 3
A kind of reconstituted tobacco extracting solution purification technique, method and step are as follows:
(1), after weigh wood-pulp board, using a hydrabrusher, wood-pulp board is discongested into process with tobacco material extracting solution After obtain extracting solution slurry, send into the second slurry can and simultaneously adjust extracting solution stock quality concentration to 0.3%-2%;
(2) extracting solution slurry stock pump obtained in step (1) is transported in board-like closed leaf-type filter, in filter Screen surface forms filter bed layer, and filtrate is returned and extracts liquid storage tank, when on filter screen, formation process requires the filter bed layer of thickness And after meeting filtering accuracy requirement, stop supplying to starch and remaining slurry is recycled to the second slurry can in filter of draining;
(3) continue extracting solution slurry stock pump obtained in step (1) is transported to the board-like closed leaf for forming filter bed layer Filtration, purification is carried out in piece filter, solid particle and float in extracting solution is removed, the clear liquid after filtration collects clear liquid In storage tank, use for subsequent concentration, when filter operating pressure reaches 0.3-0.4Mpa, stop for starching and draining in filter Remaining slurry is recycled to the second slurry can, removes the filter bed layer on filter screen;
(4) enriching section that the clear liquid after step (3) filtration delivers to reconstituted tobacco production technology is carried out into concentration production.Will be clear Removing the filter bed layer for getting off and delivering to the extraction section of reconstituted tobacco production technology carries out extraction production.
Embodiment 4
A kind of reconstituted tobacco extracting solution purification technique, method and step are as follows:
(1), after weigh wood-pulp board, using a hydrabrusher, wood-pulp board is discongested into process with tobacco material extracting solution After obtain extracting solution slurry, send into the second slurry can and simultaneously adjust extracting solution stock quality concentration to 0.3%-2%;
(2) extracting solution slurry stock pump obtained in step (1) is transported in board-like closed leaf-type filter, in filter Screen surface forms filter bed layer, and filtrate is returned and extracts liquid storage tank, when on filter screen, formation process requires the filter bed layer of thickness And after meeting filtering accuracy requirement, stop supplying to starch and remaining slurry is recycled to the second slurry can in filter of draining;
(3) extracting solution is transported to stock pump in the board-like closed leaf-type filter for formed filter bed layer carries out filtering net Change, remove the solid particle and float in extracting solution, the clear liquid after filtration is collected in clear liquid storage tank, made for subsequent concentration With when filter operating pressure reaches 0.3-0.4Mpa, stopping supplies to starch and remaining extracting solution is recycled in filter of draining Liquid storage tank is extracted, filter bed layer on filter screen is removed;
(4) extracting solution by the clear liquid after step (3) filtration i.e. after purification delivers to the dense of reconstituted tobacco production technology Contracting section carries out concentration production.The extraction section that the filter bed layer removed delivers to reconstituted tobacco production technology is carried out into extraction production.
Used by the inventive method extracting solution purification technique, hydrabrusher, board-like closed leaf-type filter, oven-dry weight are with slurry System etc. can adopt prior art device.Unless otherwise stated, percentages of the present invention are mass percent.
Extracting solution after being purified using present invention process is used for into reconstituted tobacco, the reconstituted tobacco is made into sample cigarette, it is and existing The sample cigarette for having the production of the technology mode of production is compared, and Jing specialties are smoked panel test committee member's sensory evaluation, it is believed that net using present invention process Reconstituted tobacco obtained in the extracting solution of change has been lifted on fragrance, and miscellaneous QI and zest are improved.Chemical index is protected substantially Hold consistent.Illustrate that the present invention has higher use value and effect in papermaking-method reconstituted tobaccos production.

Claims (2)

1. a kind of reconstituted tobacco extracting solution purification technique, it is characterised in that method and step is as follows:
(1) pulping:With clear water pulping or with tobacco material extracting solution pulping;The clear water pulping is that wood-pulp board metering is weighed Afterwards, using hydrabrusher, wood-pulp board is discongested into process with clear water, obtains clear water slurry;The use tobacco material extracting solution is broken Slurry, be by wood-pulp board metering weigh after, using hydrabrusher, wood-pulp board is discongested into process with tobacco material extracting solution, is obtained Extracting solution slurry;Clear water slurry enters the first slurry can, adjustment clear water stock quality concentration to 0.3%-2%;Extracting solution slurry Into the second slurry can, adjustment extracting solution stock quality concentration to 0.3%-2%;
(2) do filter bed layer:Clear water slurry or extracting solution slurry stock pump are transported in board-like closed leaf-type filter, are being filtered Machine filter net surface forms filter bed layer;When doing filter bed layer with clear water slurry, filtrate is transmitted back to clean water tank;Filtered with extracting solution slurry During bed course, filtrate is transmitted back to extraction liquid storage tank, when on filter screen, formation process requires the filter bed layer of thickness and met After filter required precision, stop supplying to starch and remaining slurry is recycled to the first slurry can or the second slurry can respectively in filter of draining;
(3) purify extracting solution:Extracting solution or extracting solution slurry stock pump obtained in above-mentioned steps (1) are transported to Filtration, purification is carried out in the board-like closed leaf-type filter of layer, solid particle and float in extracting solution is removed, after filtration Extracting solution after clear liquid is purified is collected in clear liquid storage tank, is used for subsequent concentration, when board-like closed leaf-type filter works When pressure reaches 0.3Mpa-0.4Mpa, stop supplying to starch and remaining slurry is recycled to the second slurry can or extraction in filter of draining Liquid storage tank, removes the filter bed layer on filter screen;
(4) concentrated extracting solution:The enriching section that extracting solution Jing after step (3) purification delivers to reconstituted tobacco production technology is carried out dense Contracting production.
2. a kind of reconstituted tobacco extracting solution purification technique according to claim 1, it is characterised in that by step (3) from plate The filter bed layer for getting off is removed on the closed leaf-type filter filter screen of formula delivering to the extraction section of reconstituted tobacco production technology carries out extraction life Produce.
CN201610246434.9A 2016-04-20 2016-04-20 A kind of reconstituted tobacco extracting solution purification technique Active CN105831801B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610246434.9A CN105831801B (en) 2016-04-20 2016-04-20 A kind of reconstituted tobacco extracting solution purification technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610246434.9A CN105831801B (en) 2016-04-20 2016-04-20 A kind of reconstituted tobacco extracting solution purification technique

Publications (2)

Publication Number Publication Date
CN105831801A CN105831801A (en) 2016-08-10
CN105831801B true CN105831801B (en) 2017-04-05

Family

ID=56588911

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610246434.9A Active CN105831801B (en) 2016-04-20 2016-04-20 A kind of reconstituted tobacco extracting solution purification technique

Country Status (1)

Country Link
CN (1) CN105831801B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109589679A (en) * 2018-11-26 2019-04-09 云南中烟再造烟叶有限责任公司 A kind of purification method of tobacco extraction liquid

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1189532A (en) * 1997-01-25 1998-08-05 杨国祥 Prodn. tech. of natural plant perfume for cigarette
CN101619271A (en) * 2009-07-02 2010-01-06 华顺香料(上海)有限公司 Traditional Chinese medicine combination spice for cigarette as well as preparation method and application thereof
CN101810367A (en) * 2009-02-19 2010-08-25 广西中烟工业有限责任公司 Tobacco additive for increasing smoke concentration and preparation method and application thereof
CN102499436A (en) * 2011-11-17 2012-06-20 湖北中烟工业有限责任公司 Cigarette fragrance mixed extract and preparation method thereof
CN102517998A (en) * 2011-12-14 2012-06-27 浙江省普瑞科技有限公司 Liquid filtering paper in double-layer structure and method for preparing same
CN103054186A (en) * 2012-12-27 2013-04-24 广东中烟工业有限责任公司 Chinese medicinal composite particle filter stick and preparation method thereof
CN104013096A (en) * 2014-06-26 2014-09-03 陕西中烟工业有限责任公司 Preparation method of papermaking-process reconstituted tobaccos capable of reducing content of CO in mainstream smoke
CN104144735A (en) * 2012-03-09 2014-11-12 阿斯特罗姆公司 High efficiency and high capacity glass-free fuel filtration media and fuel filters and methods employing the same
CN104939291A (en) * 2015-05-08 2015-09-30 湖北中烟工业有限责任公司 Method for enhancing inherent aroma of tobaccos by aid of natural plants

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE533833C2 (en) * 2009-04-02 2011-02-01 Cleanflow Ab Method and apparatus for clearing green liquor
EP2555847A1 (en) * 2010-04-08 2013-02-13 Purafil, Inc. Filtration media having recycled waste materials

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1189532A (en) * 1997-01-25 1998-08-05 杨国祥 Prodn. tech. of natural plant perfume for cigarette
CN101810367A (en) * 2009-02-19 2010-08-25 广西中烟工业有限责任公司 Tobacco additive for increasing smoke concentration and preparation method and application thereof
CN101619271A (en) * 2009-07-02 2010-01-06 华顺香料(上海)有限公司 Traditional Chinese medicine combination spice for cigarette as well as preparation method and application thereof
CN102499436A (en) * 2011-11-17 2012-06-20 湖北中烟工业有限责任公司 Cigarette fragrance mixed extract and preparation method thereof
CN102517998A (en) * 2011-12-14 2012-06-27 浙江省普瑞科技有限公司 Liquid filtering paper in double-layer structure and method for preparing same
CN104144735A (en) * 2012-03-09 2014-11-12 阿斯特罗姆公司 High efficiency and high capacity glass-free fuel filtration media and fuel filters and methods employing the same
CN103054186A (en) * 2012-12-27 2013-04-24 广东中烟工业有限责任公司 Chinese medicinal composite particle filter stick and preparation method thereof
CN104013096A (en) * 2014-06-26 2014-09-03 陕西中烟工业有限责任公司 Preparation method of papermaking-process reconstituted tobaccos capable of reducing content of CO in mainstream smoke
CN104939291A (en) * 2015-05-08 2015-09-30 湖北中烟工业有限责任公司 Method for enhancing inherent aroma of tobaccos by aid of natural plants

Also Published As

Publication number Publication date
CN105831801A (en) 2016-08-10

Similar Documents

Publication Publication Date Title
RU2562037C2 (en) Method and apparatus for manufacturing reconditioned tobacco material
RU2007133642A (en) METHODS FOR MILLING PULP MASS, METHODS FOR PROCESSING TECHNOLOGICAL WATERS AND METHODS FOR PRODUCING PULP MASS AND PAPER
CN100545323C (en) Reclaim the method for cupric ion in the copper plating cleaning fluid
CN104628186B (en) The treatment process of Na-ion exchanger regeneration waste liquid and cyclic utilization system in a kind of process without drainage of waste water
CN1792221A (en) Tech. of closed water circulation in maize starch prodn. process
CN101333045B (en) Method for treating backwater in stages and recovering the backwater in production of sheet by paper-making method
CN105831801B (en) A kind of reconstituted tobacco extracting solution purification technique
CN108642281A (en) A method of for three-phase object processing in extraction process and organic phase purification
CN103349867B (en) Paper-making process reconstituted tobacco papermaking white water reuse treatment method
CN106219826A (en) A kind of papermaking-method reconstituted tobaccos plain boiled water staged care step reclaiming system and method
JPH03505846A (en) Method and apparatus for removing light substances from fiber suspensions
CN204514685U (en) Ore pulp on-line monitoring pretreatment unit
CN106473227A (en) A kind of cigarette preparation method for causing fragrant extract and using method
CN206014569U (en) A kind of papermaking-method reconstituted tobaccos plain boiled water classification processes step reclaiming system
CN204238065U (en) Cotton starch plate is produced with refinement concentration equipment
CN108970218A (en) Automatic liquid control ceramic filter based on quartz sand tailing
ATE374733T1 (en) METHOD AND DEVICE FOR PROCESSING CONTAMINATED CLEANING SOAS ARISING DURING FOOD PRODUCTION, PARTICULARLY IN BREWERIES
RU2012127795A (en) METHOD AND DEVICE FOR PREPARING A TECHNOLOGICAL LIQUID ARISING IN THE PROCESS OF CLEANING OF TANKS
CN107487875A (en) A kind of papermaking-method reconstituted tobaccos are manufactured paper with pulp white water recycling handling process
EP2274471B1 (en) A method for pulping waste paper
CN110916238B (en) Tobacco stem pretreatment method applied to high-speed paper machine and white cardboard for cigarettes
CN208022841U (en) A kind of decorating base paper plain boiled water device for cleansing and recycling
CN205649911U (en) Board -like airtight blade filter of reconstituted tobacco
CN111979813A (en) Waste laminating paper recycling and preparing process
CN110877934A (en) Papermaking water purification treatment system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant