CN110026060A - A kind of biomaterial and its making and use method of degradation of formaldehyde - Google Patents
A kind of biomaterial and its making and use method of degradation of formaldehyde Download PDFInfo
- Publication number
- CN110026060A CN110026060A CN201910215186.5A CN201910215186A CN110026060A CN 110026060 A CN110026060 A CN 110026060A CN 201910215186 A CN201910215186 A CN 201910215186A CN 110026060 A CN110026060 A CN 110026060A
- Authority
- CN
- China
- Prior art keywords
- formaldehyde
- biomaterial
- degradation
- charcoal
- air
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
- B01D53/85—Biological processes with gas-solid contact
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention provides a kind of biomaterial of degradation of formaldehyde and its making and use methods, the biomaterial uses charcoal to be made with the microorganism for capableing of degradation of formaldehyde for raw material, it can be with the formaldehyde in efficient degradation air and in water, cost of manufacture is cheap, easy to maintain, does not generate any operating cost, it is easy to operate, it is applied widely, and secondary pollution is not generated, it is the biology of a new generation except formaldehyde materials.
Description
Technical field
The present invention relates to field of new materials, the biomaterial and its making and use method of specially a kind of degradation of formaldehyde.
Background technique
Formaldehyde can make protein denaturation, have carcinogenic, teratogenesis, disabling effect, and the exceeded influence human body of formaldehyde in air is strong
Health, formaldehyde in indoor air has no the mode of being effectively treated at present.
Mainstream processing method has 2 kinds at present, and one kind is oxidation removal method, mainly includes catalysis oxidation, plasma oxidation, height
The methods of warm combustion oxidation method, ozone oxidation, the above method have highly energy-consuming, and equipment cost is high, takes up a large area and generates
Secondary pollution, the practicability is poor.Second method is adsorption method.Absorption method must have corresponding adsorbent, such as concave convex rod, living
Property charcoal etc..Wherein most commonly seen is active carbon adsorption, this method is also the common method of home interior formaldehyde removal.Absorption method
Be divided into nature absorption again and force absorption, wherein natural adsorption method refers to furnishes adsorbing medium indoors, by air from
So flowing is contacted with adsorbing medium, realizes the suction-operated of limited efficacy.This method is almost to exceeded formaldehyde without effect or its effect
Small to be ignored, main cause is that air flowing is limited, and active carbon (or other adsorbing mediums, in the following contents referred to as
Active carbon) it is small to the exposure of air, contact area is small, so that the contact probability very little of formaldehyde and active carbon.Shallow-layer contact can
It can be repelled by the zone of saturation of activated carbon surface, not can be carried out sufficient adsorption reaction.Therefore the formaldehyde of natural absorption method is gone
Except effect is very limited.Passive adsorption refers to makes the formaldehyde in air enter the work full of active carbon by force ventilated mode
Property charcoal room, adsorption reaction occurs in activated carbon chamber, and air can carry out more complete contact, active carbon with active carbon here
It filters the air, the organic molecules such as formaldehyde in air is adsorbed.The shortcomings that the method is that the absorption of active carbon is made
With that can generate saturation, the active carbon after saturation cannot not only continue formaldehyde adsorption, but also can be formed to release formaldehyde in air
Pollution sources cause secondary pollution, and need to regularly replace active carbon can just carry out, therefore become consumptive material, demand pole to active carbon
Greatly, active carbon is expensive, forms the very big wasting of resources.As it can be seen that above-mentioned two methods in the prior art are for air
In formaldehyde removal it is undesirable.
Summary of the invention
The object of the present invention is to provide one kind to overcome the shortage of prior art, propose a kind of degradation of formaldehyde biomaterial and
Its making and use method.
The production method that the purpose of the present invention one is to provide a kind of biomaterial of formaldehyde in air that can degrade is specific to wrap
Include following steps:
1. preparing charcoal.1 part of biomass carbon, it is crushed to partial size 5-10mm or so.Charcoal need in high temperature anaerobic shape
At raw material is mainly based on natural plant biological matter, comprising: stalk, rice husk, the Chinese medicinal plant source dregs of a decoction, sawdust etc..Charcoal product
Matter refers to the requirement in national standard " NY ∕ T 3041-2016 charcoal base manure material " to charcoal, and in 20 μm or so scales
Under, there is neat section and natural plant to repeat porous structure.
2. preparing Degradation Formaldehyde fermented liquid.Preparing microorganism fluid nutrient medium is formulated as follows: formaldehyde 100mg/L,
NH4Cl 0.5g/L、Na2HPO4 3.0g/L、KH2PO4 1.5g/L、MgSO4·7H2O 0.1g/L、1M CaCl20.1g/L.It will
It can be accessed in culture medium using formaldehyde as the Degradation Formaldehyde bacterial strain of sole carbon source according to 3-5% inoculum concentration, 30 DEG C of sudden and violent gas or shaking table
200r/min culture, when cell concentration reaches fermentation ends when OD600 value is 1.5 or so, fermentation liquid is spare.
3. prepared by biomaterial.Charcoal, glycerol and fermentation liquid are stirred evenly according to the mass ratio of 4-6:1:2, often
It makees binder by the appropriate PAM of disc granulation method spray under temperature to be granulated, pellet material after molding can come into operation.
Preferably, charcoal described in step 1 is using pine sawdust as matrix.
Preferably, Degradation Formaldehyde bacterial strain described in step 2 is one plant of Methylobacter bacteriumMethylobacterium podariumJQ-1(hereinafter referred to as JQ-1), JQ-1 bacterial strain is in Chinese microorganism strain preservation management
The deposit number of committee's common micro-organisms center is CGMCC No. 17229.
Preferably, the mass ratio of charcoal described in step 3, glycerol and fermentation liquid is 4:1:2.
The purpose of the present invention two is to provide a kind of biomaterial made by the above method, it is characterised in that the material
It can be with degradation of formaldehyde.
The purpose of the present invention three is to provide the application method of above-mentioned biomaterial, particular content are as follows: is removing formaldehyde in air
In application, this biomaterial is placed in culture dish or saucer, a small amount of moisture is often sprayed in ware, keeps this biomaterial
Bioactivity.
Preferably, the moisture sprayed in the application method of the biomaterial is preferred with not flooding biomaterial.
Preferably, biomaterial of the present invention is wrapped in semi-permeable membrane, then when removing formaldehyde in waste water
It direct plunges into pending water.
Technical solution provided by the invention utilizes the degradation of microorganism PARA FORMALDEHYDE PRILLS(91,95), and production can remove in air and water
The biomaterial of middle formaldehyde, 200g biomaterial can be interior by 0.486m for 24 hours30.22 mg/m in space3Formaldehyde be reduced to
National standard i.e. 0.1 mg/m3Hereinafter, this material of 100g can be interior by 70mg/L Degradation Formaldehyde in solution to 5mg/L for 24 hours.
The cost of manufacture of biomaterial of the present invention is cheap, easy to maintain, does not generate any operating cost, operation letter
Just, applied widely, any human body harmful components are free of, are suitble to apply in closed air environment, while absorbing formaldehyde
It can be degraded with PARA FORMALDEHYDE PRILLS(91,95), therefore adsorption saturation effect will not be generated, effectively prevent formaldehyde secondary pollution.The present invention provides
Biomaterial be a new generation biology except formaldehyde materials, formaldehyde is completely removed using the metabolic function of life entity PARA FORMALDEHYDE PRILLS(91,95),
It is transformed into free of contamination normal bio tissue and excreta, formaldehyde adsorbent of new generation is can be used as and uses.
Detailed description of the invention
Fig. 1 is the charcoal structural form SEM photograph that embodiment 1 uses.
Specific embodiment
Below with reference to specific implementation example, the present invention is described in detail.Following embodiment facilitates the skill in this field
Art personnel further understand the present invention, but the invention is not limited in any way.
The strain used in following embodiment are as follows: JQ-1(Methylobacterium podarium), it is micro- to be preserved in China
Biological inoculum preservation administration committee common micro-organisms center deposit number CGMCC No.17229.
Reagent employed in following embodiment, material etc. can be bought by commercial sources and be obtained.
Degradation Formaldehyde culture medium prescription employed in following embodiment is as follows: formaldehyde 100mg/L, NH4Cl 0.5g/L、
Na2HPO4 3.0g/L、KH2PO4 1.5g/L、MgSO4·7H2O 0.1g/L、1M CaCl2 0.1g/L。
The preparation of 1 biomaterial 1 of embodiment
Prepare 1 part of pine sawdust biomass carbon, is crushed to partial size 3mm or so, which sees the SEM photograph of Fig. 1
It is shown.By JQ-1 bacterial strain according in 3-5% inoculum concentration access Degradation Formaldehyde culture medium, sudden and violent gas or shaking table 200r/min are trained at 30 DEG C
It supports, when cell concentration reaches fermentation ends when OD600 value is 1.5 or so, fermentation liquid is spare.By charcoal, glycerol and fermentation liquid
It is stirred evenly according to the mass ratio of 4:1:2, binder is done by the appropriate PAM of disc granulation method spray under room temperature and is granulated, at
Pellet material after type is biomaterial finished product of the present invention.
The preparation of 2 biomaterial 2 of embodiment
Prepare 1 part of pine sawdust biomass carbon, is crushed to partial size 3mm or so, which sees the SEM photograph of Fig. 1
It is shown.By JQ-1 bacterial strain according in 3-5% inoculum concentration access Degradation Formaldehyde culture medium, sudden and violent gas or shaking table 200r/min are trained at 30 DEG C
It supports, when cell concentration reaches fermentation ends when OD600 value is 1.5 or so, fermentation liquid is spare.By charcoal, glycerol and fermentation liquid
It is stirred evenly according to the mass ratio of 6:1:2, binder is done by the appropriate PAM of disc granulation method spray under room temperature and is granulated, at
Pellet material after type is biomaterial finished product of the present invention.
3 formaldehyde in air degradation experiment of implementation column
Handle the experiment of interior of the cabinet formaldehyde in air.Tested cabinet body be office cuboid iron sheet cabinet body, long 90cm, wide 45cm,
High 120cm, volume 0.486m3.Biomaterial 200g prepared by embodiment 1 is put into ware, is filled in ware a small amount of drinkable pure
Water purification, water do not flood biomaterial.Processing ware is put into cabinet body.By the formalin of 10000mg/L concentration, drawn with liquid-transfering gun
10 μ L, are placed on masking foil, move into cabinet body, and placement is heated to 100 DEG C of iron block under masking foil.Inside uses gas sampling
Machine carries out gaseous sample acquisition.The method of sampling refers to national standard " Indoor Air Quality standards GBT 18883-2002 " method,
Taking close to cabinet body central location point is gas sampling point.Gas sampling type number are as follows: NTC-805.External adhesive plaster or rubber mass
The totally-enclosed cabinet body of sealing strip.After about 10min, formalin is all evaporated.Sampler power supply is opened, it is empty to carry out interior of the cabinet
Gas sampling.Sampling flow setting are as follows: 333.3ml/min, sampling time are as follows: 30min, sampling volume are as follows: 10L, room temperature 25
℃.Air in cabinet is handled using the biomaterial obtained of embodiment 1, every 4h acquires primary air sample.Acquisition altogether
24h.Meanwhile 1 group of blank control group of setting, this patent material is placed not in cabinet body, other operations are operated with processing group.0h,
4h, 8h, 12h, 16h, 20h, for 24 hours, totally 7 samples carry out concentration of formaldehyde measurements and calculating.The concentration of formaldehyde of the liquid sample
Measurement uses " the measurement acetylacetone,2,4-pentanedione spectrophotometry GB/T15516-1995 of air quality formaldehyde " method.Experimental result such as table
Shown in 1.
The variation of 1. cabinet body concentration of formaldehyde of table
| Air formaldehyde concentration (mg/m3) | 0h | 4h | 8h | 12h | 16h | 20h | 24h |
| Blank control group | 0.219 | 0.223 | 0.214 | 0.195 | 0.193 | 0.187 | 0.186 |
| Processing group | 0.191 | 0.159 | 0.142 | 0.127 | 0.110 | 0.098 | 0.085 |
By experimental data it is found that biomaterial provided by the invention has the effect of stronger absorption and degradation formaldehyde in air
Fruit, (PARA FORMALDEHYDE PRILLS(91,95) concentration is about that 2 times of indoor air quality national standard i.e. concentration is 0.22 mg/m to the Degradation Formaldehyde rate of this material3
Polluted gas for) are as follows: 0.0136mg/hkg.The dosage of 200g can be interior by 0.486m for 24 hours3About state in space
Formaldehyde in the room air of 2 times of standard of family is reduced to national standard or less.
Degradation Formaldehyde is tested in 4 liquid of implementation column
Biomaterial 100g made by embodiment 1 is fitted into semi-permeable membrane, the solution that investment 20L concentration of formaldehyde is 70mg/L
In, kept for 30 DEG C of water temperature.Concentration of formaldehyde variation is detected, the measurement of concentration of formaldehyde uses state environment protecting standard: " water in solution
The measurement acetylacetone,2,4-pentanedione spectrophotometry HJ 601-2011 of matter formaldehyde " method is measured, it the results are shown in Table 2.
Concentration of formaldehyde changes in 2. solution of table
| Concentration of formaldehyde (mg/L) | 0h | 12h | 24h |
| Blank control group | 72.4 | 71.9 | 72.5 |
| Processing group | 71.3 | 26.8 | 0.5 |
As a result prove that biomaterial provided by the invention has good degradation effect to the formaldehyde in solution.
Claims (8)
1. a kind of preparation method of the biomaterial of degradation of formaldehyde, it is characterised in that include the following steps:
A. preparing 1 part of charcoal, be crushed to partial size 5-10mm, biological carbon feedstock includes stalk, rice husk, the Chinese medicinal plant source dregs of a decoction,
Sawdust etc.；
B. prepare Degradation Formaldehyde fermented liquid, Liquid Culture Degradation Formaldehyde bacterial strain is 1.5 left when cell concentration reaches OD600 value
Fermentation ends when right, fermentation liquid are spare；
C. charcoal, glycerol and fermentation liquid are stirred evenly according to the mass ratio of 4-6:1:2, passes through disc granulation method under room temperature
It sprays appropriate PAM and makees binder and be granulated, molding.
2. a kind of preparation method of the biomaterial of degradation of formaldehyde according to claim 1, it is characterised in that the biology
Charcoal is using pine sawdust as matrix.
3. a kind of preparation method of the biomaterial of degradation of formaldehyde according to claim 1, it is characterised in that the formaldehyde
Degradation bacteria strains are one plant of Methylobacter bacteriumMethylobacterium podariumJQ-1,Methylobacterium podariumJQ-1 is CGMCC in the deposit number of China Committee for Culture Collection of Microorganisms's common micro-organisms center
No. 17229。
4. a kind of preparation method of the biomaterial of degradation of formaldehyde according to claim 1, it is characterised in that the biology
The mass ratio of charcoal, glycerol and fermentation liquid is 4:1:2.
5. a kind of biomaterial of degradation of formaldehyde, it is characterised in that be made using any one of claim 1-4.
6. a kind of application method of the purification formaldehyde in air of biomaterial described in claim 5, it is characterised in that by the life
Object material is placed in culture dish or saucer, and a small amount of moisture is often sprayed in ware.
7. the application method of formaldehyde in biomaterial purified water described in a kind of claim 5, it is characterised in that by the biology
Material is wrapped in semi-permeable membrane, is put into pending water.
8. the application method of biomaterial purification formaldehyde in air according to claim 7, it is characterised in that the sprinkling
Moisture do not flood biomaterial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910215186.5A CN110026060A (en) | 2019-03-19 | 2019-03-19 | A kind of biomaterial and its making and use method of degradation of formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910215186.5A CN110026060A (en) | 2019-03-19 | 2019-03-19 | A kind of biomaterial and its making and use method of degradation of formaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110026060A true CN110026060A (en) | 2019-07-19 |
Family
ID=67236339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910215186.5A Pending CN110026060A (en) | 2019-03-19 | 2019-03-19 | A kind of biomaterial and its making and use method of degradation of formaldehyde |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110026060A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359425A (en) * | 2019-09-05 | 2020-07-03 | 朱启常 | Biological material for degrading formaldehyde and preparation and use methods thereof |
| CN112588105A (en) * | 2020-11-11 | 2021-04-02 | 郭威 | Cultivation method for promoting formaldehyde adsorption and degradation capability of plants |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3824743C1 (en) * | 1988-07-21 | 1989-09-21 | Otto Dr.Rer.Nat. Moebus | Process for the production of biotechnological products by solid fermentation |
| CN106396630A (en) * | 2016-09-19 | 2017-02-15 | 蒋文兰 | Crushed stone-type alumina light ceramsite with air purifying function |
| CN108178341A (en) * | 2018-03-13 | 2018-06-19 | 中国电建集团中南勘测设计研究院有限公司 | A kind of solid microbe purification particle and preparation method thereof |
-
2019
- 2019-03-19 CN CN201910215186.5A patent/CN110026060A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3824743C1 (en) * | 1988-07-21 | 1989-09-21 | Otto Dr.Rer.Nat. Moebus | Process for the production of biotechnological products by solid fermentation |
| CN106396630A (en) * | 2016-09-19 | 2017-02-15 | 蒋文兰 | Crushed stone-type alumina light ceramsite with air purifying function |
| CN108178341A (en) * | 2018-03-13 | 2018-06-19 | 中国电建集团中南勘测设计研究院有限公司 | A kind of solid microbe purification particle and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 金晶: "甲醛降解菌筛选、关键酶基因克隆表达和固定化细胞降解特性的研究", 《中国优秀硕士学位论文全文数据库》 * |
| 陆晓华，成官文主编: "《环境污染控制原理》", 28 February 2010, 武汉：华中科技大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111359425A (en) * | 2019-09-05 | 2020-07-03 | 朱启常 | Biological material for degrading formaldehyde and preparation and use methods thereof |
| CN112588105A (en) * | 2020-11-11 | 2021-04-02 | 郭威 | Cultivation method for promoting formaldehyde adsorption and degradation capability of plants |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104261570B (en) | A kind of livestock and poultry cultivation anaerobism purifying agent for polluted water | |
| CN103773752B (en) | The process for fixation of a kind of oil degradation bacteria and application | |
| CN109174026B (en) | Composite microalgae biological adsorbent microsphere and method for adsorbing chromium in wastewater by using composite microalgae biological adsorbent microsphere | |
| CN107434305B (en) | Water purifying agent with defect-rich carbon carrier immobilized microorganisms and preparation method thereof | |
| CN109847693A (en) | A kind of bentonite modified charcoal and its preparation method and application | |
| CN111686287B (en) | Preparation method and application of microbial bacteriostatic deodorant | |
| CN108273380B (en) | For improving the growth-promoting flora and waste gas processing method of exhaust treatment efficiency | |
| CN105689374B (en) | A kind of application of phosphorus base biological carbon materials in lead-contaminated soil improvement | |
| CN103212287B (en) | Method for producing high-efficiency biological deodorizing mixed stuffing | |
| CN110026060A (en) | A kind of biomaterial and its making and use method of degradation of formaldehyde | |
| CN103275899B (en) | Water germ and the application in removing sulfur-containing foul material thereof | |
| CN109897794A (en) | A kind of composite waste culture using fern leaf as the biological activated carbon of carbon source carrier | |
| KR101168750B1 (en) | Deodorization apparatus for cleaning the bed smell and harmful gas | |
| CN203417600U (en) | Air purifying device | |
| CN104633778A (en) | Air purifier with PM2.5 (particulate matter 2.5) removing function on basis of micro-algae | |
| CN110064299A (en) | A kind of preparation method of deoderizing kitchen garbage processing microbial inoculum | |
| CN113736686A (en) | Desulfurization and ammonia removal microbial deodorant and preparation method thereof | |
| CN109897869B (en) | Biological activated carbon cultured by high-sugar wastewater and using ficus microcarpa leaves as carbon source carrier | |
| CN107653204A (en) | A kind of complex micro organism fungicide for landfill waste processing and preparation method thereof | |
| CN107282012B (en) | Production method of perlite compressed nutrient soil capable of treating heavy metals in waste liquid | |
| CN108636346A (en) | A kind of preparation method of Diatomite-based Porous adsorbent | |
| CN114717156A (en) | Biological agent produced by fixing bacillus with diatomite | |
| CN210674778U (en) | Biological treatment device for purifying formaldehyde in air | |
| CN109382073B (en) | Preparation method and application of alkali fusion fly ash modified pig manure biochar | |
| CN109896703B (en) | Light-enzyme composite catalytic function microorganism water purifying agent for culturing anaerobic sewage |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190719 |