CN111701424A - High-efficiency aldehyde removing agent and preparation method thereof - Google Patents
High-efficiency aldehyde removing agent and preparation method thereof Download PDFInfo
- Publication number
- CN111701424A CN111701424A CN202010589278.2A CN202010589278A CN111701424A CN 111701424 A CN111701424 A CN 111701424A CN 202010589278 A CN202010589278 A CN 202010589278A CN 111701424 A CN111701424 A CN 111701424A
- Authority
- CN
- China
- Prior art keywords
- removing agent
- weight percent
- gel
- aldehyde removing
- palmatine
- 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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses an efficient aldehyde removing agent, and particularly relates to an aldehyde removing agent which comprises, by weight, 20-40% of urea, 15-35% of sodium bisulfite, 10-20% of carbazide, 5-15% of thiourea, 3-12% of plant slow-release gel and 10-30% of purified water. In the invention, formaldehyde in the indoor air is removed by adding a component which can chemically react with the formaldehyde. Meanwhile, the formula is also added with a formaldehyde inhibitor sodium bisulfite, so that the volatilization of formaldehyde can be further reduced. In addition, in order to prolong the action time of the high-efficiency aldehyde removing agent, the effective components and the plant sustained-release gel are embedded to play a sustained-release role.
Description
Technical Field
The invention relates to an aldehyde removing agent, in particular to an efficient aldehyde removing agent and a preparation method thereof.
Background
Indoor decoration pollution refers to the phenomenon that oxygen, formaldehyde, benzene, ammonia, volatile organic compounds and other gases harmful to human health are mixed in indoor air. It is well known that the decoration of indoor space environment can bring about various environmental problems, such as: the use of building materials containing toxic and harmful substances can affect the indoor air quality; various dusts, wastes and noise pollution are generated in the decoration process, and the dust, the wastes and the noise pollution can seriously affect the life of people. The sources of interior decoration pollution are many, and a considerable part of the pollution is caused by improper materials used in the decoration process, including volatile organic gases such as formaldehyde, benzene, xylene and the like. However, if harmful gases volatilized from the decoration materials are not removed in time, certain harm can be caused to the health of people living in the decoration materials.
In order to remove a large amount of formaldehyde released by building materials when finishing decoration, a plurality of formaldehyde removing products, such as photocatalyst formaldehyde removing agents, plant catalase formaldehyde removing agents and the like, appear on the market. However, the traditional aldehyde removing agent such as photocatalyst aldehyde removing agent has the best effect of removing aldehyde under the ultraviolet environment, and is very easily affected by photocatalysis. The main components of the plant catalase aldehyde-removing agent are from natural plants, but the waste removing mechanism of the natural plant source components is not easy to master, and the plant catalase aldehyde-removing agent is difficult to act on a certain target pollutant in a targeted manner.
Disclosure of Invention
The invention provides a high-efficiency aldehyde removing agent which has the advantages of good aldehyde removing effect and long acting time.
In order to achieve the purpose, the invention provides the following technical scheme:
the high-efficiency aldehyde removing agent comprises, by weight, 20-40% of urea, 15-35% of sodium bisulfite, 10-20% of carbazide, 5-15% of thiourea, 3-12% of plant slow-release gel and 10-30% of purified water. Sodium bisulfite is a strong and effective formaldehyde inhibitor, which can effectively inhibit formaldehyde from volatilizing.
Preferably, the high-efficiency aldehyde remover further comprises at least one of coconut charcoal, palmatine, berberine, JFC-1 and water-soluble konjac powder. The coconut charcoal has an adsorption effect, and can adsorb free pollutants and dust in the air, so that the effect of purifying indoor air is achieved. Meanwhile, after formaldehyde in the air is decomposed into carbon dioxide and water, the pH value in the air is slightly reduced, at the moment, the palmatine and the berberine can neutralize free acid liquor in the air, and after entering the human body through a respiratory system, the air-conditioning agent does not produce harm, but can play a role in diminishing inflammation and sterilizing.
Preferably, the plant sustained-release gel comprises cactus gel, aloe vera gel and rosin. The plant slow-release gel can prolong the action time of the aldehyde removing agent and play a role in slow release.
Preferably, the high-efficiency aldehyde removing agent further comprises a photocatalyst, and the photocatalyst is selected from one of nano titanium dioxide, nano zinc oxide and nano cadmium sulfide, or a mixture of the nano titanium dioxide, the nano zinc oxide and the nano cadmium sulfide.
Preferably, the high-efficiency aldehyde removing agent comprises, by weight, 20-40% of urea, 15-35% of sodium bisulfite, 10-20% of carbazide, 5-15% of thiourea, 5-15% of coconut charcoal, 5-15% of palmatine, 2-10% of cactus gel, 1-5% of rosin, 0.1-0.5% of JFC, 1-2% of water-soluble konjac flour and 10-30% of purified water.
Preferably, the high-efficiency aldehyde removing agent comprises 25% of urea, 20% of sodium bisulfite, 12% of carbazide, 6% of thiourea, 6% of coconut charcoal, 6% of palmatine, 6% of cactus gel, 4% of rosin, 0.3% of JFC, 1.5% of water-soluble konjac flour and 15% of purified water in percentage by weight.
The invention also provides a preparation method of the high-efficiency aldehyde removing agent, which comprises the following steps:
s01, accurately weighing urea, sodium bisulfite, carbazide and thiourea with preset weight percentage content in purified water, and stirring until the urea, the sodium bisulfite, the carbazide and the thiourea are dissolved to obtain a mixed solution.
S02, heating the mixed solution to 30-50 ℃, adding cactus gel and rosin, evaporating and concentrating until the mixed solution is in a slurry state to obtain slurry.
S03, adding coconut charcoal, palmatine, JFC and water-soluble konjac flour into the pulp, stirring until the coconut charcoal, palmatine, JFC and water-soluble konjac flour are uniformly mixed, uniformly dispersing at the temperature of 30-40 ℃, lasting for 15-25 min, and cooling to room temperature to obtain the efficient aldehyde removing agent.
In a preferred embodiment of the above production method, in step S02, the heating temperature of the mixed solution is 40 ℃.
In a preferred embodiment of the above preparation method, in step S03, coconut charcoal and palmatine are added to the slurry, and the mixture is stirred until the mixture is uniformly mixed, and the temperature for uniform dispersion is maintained at 36 ℃.
As a preferable embodiment of the above preparation method, in step S03, coconut charcoal and palmatine are added to the slurry, and the mixture is stirred until the mixture is uniformly mixed, and the time for uniform dispersion is 23 min.
The invention has the beneficial effects that:
in the invention, the formaldehyde in the indoor air can be catalytically oxidized by adding the component with strong oxidizing property, thereby achieving the effect of removing the formaldehyde. Meanwhile, in order to prolong the action time of the high-efficiency aldehyde removing agent, the functional components are embedded with the plant sustained-release gel to play a sustained-release role.
Detailed Description
Example 1
The high-efficiency aldehyde removing agent comprises, by weight, 20% of urea, 15% of sodium bisulfite, 13% of carbazide, 7% of thiourea, 7% of coconut charcoal, 9% of palmatine, 7% of cactus gel, 4% of rosin, 0.1% of JFC, 1% of water-soluble konjac flour and 18% of purified water.
The preparation method of the high-efficiency aldehyde removing agent comprises the following steps:
s01, accurately weighing urea, sodium bisulfite, carbazide and thiourea with preset weight percentage content in purified water, and stirring until the urea, the sodium bisulfite, the carbazide and the thiourea are dissolved to obtain a mixed solution.
S02, heating the mixed solution to 40 ℃, adding cactus gel and rosin, evaporating and concentrating the mixture until the mixed solution is in a slurry state to obtain slurry.
S03, adding coconut charcoal, palmatine, JFC and water-soluble konjac powder into the pulp, stirring until the mixture is uniformly mixed, maintaining the temperature of the uniformly dispersed mixture at 36 ℃ for 23min, and cooling to room temperature to obtain the high-efficiency aldehyde removing agent.
The duration of aldehyde removal of the high-efficiency aldehyde removing agent provided by the embodiment is 67 days/200 g.
Example 2
The high-efficiency aldehyde removing agent comprises, by weight, 25% of urea, 20% of sodium bisulfite, 12% of carbazide, 6% of thiourea, 6% of coconut charcoal, 6% of palmatine, 6% of cactus gel, 4% of rosin, 0.3% of JFC, 1.5% of water-soluble konjac flour and 15% of purified water.
The preparation method of the high-efficiency aldehyde removing agent is the same as that of the example 1.
The duration of aldehyde removal of the high-efficiency aldehyde removing agent provided by the embodiment is 62 days/200 g.
Example 3
The high-efficiency aldehyde removing agent comprises, by weight, 30% of urea, 15% of sodium bisulfite, 11% of carbazide, 6% of thiourea, 7% of coconut charcoal, 6% of palmatine, 3% of cactus gel, 4% of rosin, 0.4% of JFC, 1.7% of water-soluble konjac flour and 18% of purified water.
The preparation method of the high-efficiency aldehyde removing agent is the same as that of the example 1.
The duration of aldehyde removal of the high-efficiency aldehyde removing agent provided by the embodiment is 63 days/200 g.
Example 4
The high-efficiency aldehyde removing agent comprises, by weight, 23% of urea, 16% of sodium bisulfite, 12% of carbazide, 7% of thiourea, 8% of coconut charcoal, 8% of palmatine, 7% of cactus gel, 4% of rosin, 0.5% of JFC, 2% of water-soluble konjac flour and 15% of purified water.
The preparation method of the high-efficiency aldehyde removing agent is the same as that of the example 1.
The duration of aldehyde removal of the high-efficiency aldehyde removing agent provided by the embodiment is 65 days/200 g.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The efficient aldehyde removing agent is characterized by comprising, by weight, 20-40% of urea, 15-35% of sodium bisulfite, 10-20% of carbazide, 5-15% of thiourea, 3-12% of plant slow-release gel and 10-30% of purified water.
2. The efficient aldehyde remover according to claim 1, further comprising at least one of coconut charcoal, palmatine, berberine, JFC-1 and water-soluble konjac flour.
3. The efficient aldehyde removing agent as claimed in claim 1, wherein the plant sustained-release gel comprises cactus gel, aloe vera gel and rosin.
4. The efficient aldehyde removing agent as claimed in claim 1, wherein the plant sustained-release gel further comprises at least one of artemisia capillaris, artemisia capillaris and cymbopogon nardus.
5. The efficient aldehyde removing agent according to any one of claims 1 to 4, which comprises 20 to 40 weight percent of urea, 15 to 35 weight percent of sodium bisulfite, 10 to 20 weight percent of carbazide, 5 to 15 weight percent of thiourea, 5 to 15 weight percent of coconut charcoal, 5 to 15 weight percent of palmatine, 2 to 10 weight percent of cactus gel, 1 to 5 weight percent of rosin, 0.1 to 0.5 weight percent of JFC, 1 to 2 weight percent of water-soluble konjac flour and 10 to 30 weight percent of purified water.
6. The efficient aldehyde removing agent according to claim 5, which comprises 25% of urea, 20% of sodium bisulfite, 12% of carbazide, 6% of thiourea, 6% of coconut charcoal, 6% of palmatine, 6% of cactus gel, 4% of rosin, 0.3% of JFC, 1.5% of water-soluble konjac flour and 15% of purified water by weight.
7. The preparation method of the high-efficiency aldehyde removing agent is characterized by comprising the following steps:
s01, accurately weighing urea, sodium bisulfite, carbazide and thiourea with preset weight percentage content in purified water, and stirring until the urea, the sodium bisulfite, the carbazide and the thiourea are dissolved to obtain a mixed solution;
s02, heating the mixed solution to 30-50 ℃, adding cactus gel and rosin, and evaporating and concentrating the mixture until the mixed solution is pasty to obtain slurry;
s03, adding coconut charcoal, palmatine, JFC and water-soluble konjac flour into the pulp, stirring until the coconut charcoal, palmatine, JFC and water-soluble konjac flour are uniformly mixed, uniformly dispersing at the temperature of 30-40 ℃, lasting for 15-25 min, and cooling to room temperature to obtain the efficient aldehyde removing agent.
8. The method as claimed in claim 7, wherein the heating temperature of the mixture is 40 ℃ in step S02.
9. The method as claimed in claim 7, wherein in step S03, the coconut charcoal and palmatine are added into the slurry, and the mixture is stirred until the mixture is uniformly mixed, and the temperature for uniform dispersion is maintained at 36 ℃.
10. The method for preparing an effective aldehyde-removing agent according to claim 7, wherein the time for uniform dispersion is 23min in step S03.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010589278.2A CN111701424A (en) | 2020-06-24 | 2020-06-24 | High-efficiency aldehyde removing agent and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010589278.2A CN111701424A (en) | 2020-06-24 | 2020-06-24 | High-efficiency aldehyde removing agent and preparation method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN111701424A true CN111701424A (en) | 2020-09-25 |
Family
ID=72543136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010589278.2A Pending CN111701424A (en) | 2020-06-24 | 2020-06-24 | High-efficiency aldehyde removing agent and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111701424A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115041003A (en) * | 2022-06-28 | 2022-09-13 | 佛山市三水日邦化工有限公司 | High-efficiency aldehyde-removing spray and preparation method thereof |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10315423A (en) * | 1997-05-14 | 1998-12-02 | Dainippon Printing Co Ltd | Decorative sheet and decorative plate trapping formaldehyde and having antibacterial properties |
CN1387445A (en) * | 1999-11-30 | 2002-12-25 | 株式会社大鹿 | Aldehyde-deodorizing compositions |
CN1463753A (en) * | 2002-06-11 | 2003-12-31 | 成都航利生物材料研究所 | Novel methylene oxide scavenging agent |
CN1569313A (en) * | 2004-04-30 | 2005-01-26 | 罗文圣 | Noxious gas catching material and its preparation method |
CN101175832A (en) * | 2005-07-06 | 2008-05-07 | 一方社油脂工业株式会社 | Aldehyde collector and manufacturing method of woody panel using it |
CN103251971A (en) * | 2013-05-22 | 2013-08-21 | 乐美加特种纤维(连云港)有限公司 | Multifunctional controlled-release transparent solid aromatic and preparation method thereof |
CN103349789A (en) * | 2013-06-18 | 2013-10-16 | 上海市静安区教育学院附属学校 | Solid air freshening agent and its preparation method |
CN104474860A (en) * | 2014-11-04 | 2015-04-01 | 成都彩虹电器(集团)中南有限公司 | Antibacterial and formaldehyde removing indoor air purification composition and preparation method thereof |
CN105268302A (en) * | 2015-11-03 | 2016-01-27 | 连云港岚宝电子科技有限公司 | Slow-release type indoor formaldehyde-clearing agent |
CN107801738A (en) * | 2017-11-28 | 2018-03-16 | 云南百叶集生物科技有限公司 | A kind of plant composition and preparation method thereof, application |
CN109589779A (en) * | 2018-12-19 | 2019-04-09 | 山东农业大学 | A kind of multifunctional bio base formaldehyde catching agent and preparation method thereof |
CN110051960A (en) * | 2019-05-28 | 2019-07-26 | 湖南福瑞希环保科技有限公司 | A kind of efficient and environment-friendly type is except aldehyde medicament and preparation method thereof |
-
2020
- 2020-06-24 CN CN202010589278.2A patent/CN111701424A/en active Pending
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10315423A (en) * | 1997-05-14 | 1998-12-02 | Dainippon Printing Co Ltd | Decorative sheet and decorative plate trapping formaldehyde and having antibacterial properties |
CN1387445A (en) * | 1999-11-30 | 2002-12-25 | 株式会社大鹿 | Aldehyde-deodorizing compositions |
CN1463753A (en) * | 2002-06-11 | 2003-12-31 | 成都航利生物材料研究所 | Novel methylene oxide scavenging agent |
CN1569313A (en) * | 2004-04-30 | 2005-01-26 | 罗文圣 | Noxious gas catching material and its preparation method |
CN101175832A (en) * | 2005-07-06 | 2008-05-07 | 一方社油脂工业株式会社 | Aldehyde collector and manufacturing method of woody panel using it |
CN103251971A (en) * | 2013-05-22 | 2013-08-21 | 乐美加特种纤维(连云港)有限公司 | Multifunctional controlled-release transparent solid aromatic and preparation method thereof |
CN103349789A (en) * | 2013-06-18 | 2013-10-16 | 上海市静安区教育学院附属学校 | Solid air freshening agent and its preparation method |
CN104474860A (en) * | 2014-11-04 | 2015-04-01 | 成都彩虹电器(集团)中南有限公司 | Antibacterial and formaldehyde removing indoor air purification composition and preparation method thereof |
CN105268302A (en) * | 2015-11-03 | 2016-01-27 | 连云港岚宝电子科技有限公司 | Slow-release type indoor formaldehyde-clearing agent |
CN107801738A (en) * | 2017-11-28 | 2018-03-16 | 云南百叶集生物科技有限公司 | A kind of plant composition and preparation method thereof, application |
CN109589779A (en) * | 2018-12-19 | 2019-04-09 | 山东农业大学 | A kind of multifunctional bio base formaldehyde catching agent and preparation method thereof |
CN110051960A (en) * | 2019-05-28 | 2019-07-26 | 湖南福瑞希环保科技有限公司 | A kind of efficient and environment-friendly type is except aldehyde medicament and preparation method thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115041003A (en) * | 2022-06-28 | 2022-09-13 | 佛山市三水日邦化工有限公司 | High-efficiency aldehyde-removing spray and preparation method thereof |
CN115041003B (en) * | 2022-06-28 | 2023-11-21 | 佛山市三水日邦化工有限公司 | Efficient formaldehyde removal spray and preparation method thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110639550B (en) | Antibacterial formaldehyde-removing catalytic material and preparation method and application thereof | |
KR20050087756A (en) | Anti-microbial and deodorizing catalyst coating agent and its preparation process | |
CN111534307B (en) | Double-layer covering soil remediation agent for heavy metal contaminated soil and preparation method | |
CN110898372B (en) | Indoor formaldehyde purification method | |
CN109954384A (en) | The purifying formaldehyde material and preparation method thereof of amino acid is loaded on porous adsorption carrier | |
CN100535063C (en) | Nanometer ecological paint | |
CN111701424A (en) | High-efficiency aldehyde removing agent and preparation method thereof | |
CN109663498A (en) | A kind of natural oxygen catalytic control agent for administering indoor decorating pollution | |
CN111389206B (en) | Air purification compound agent suitable for being used after decoration pollution and preparation method thereof | |
CN107955426A (en) | One kind is except formaldehyde spray liniment and preparation method thereof | |
CN110787625A (en) | Formaldehyde scavenging agent for decoration | |
CN109731558A (en) | A kind of anion activity carbon nanometer composite material and the preparation method and application thereof | |
CN112300609B (en) | Artificial board formaldehyde release risk prevention and control material and use method thereof | |
CN110772988A (en) | Photocatalyst air purifying agent and preparation method thereof | |
CN111269622A (en) | Preparation method of novel mildew-proof environment-friendly coating | |
KR20090116846A (en) | Functional materials manufacture methods for remove of sick house syndrome | |
CN105771886A (en) | Nanoscale air purifying preparation | |
CN108926995A (en) | A kind of visible-light response type nano Photocatalyst water solution | |
CN104174268A (en) | Aromatic air purification powder | |
CN111849239A (en) | Negative ion spraying solvent and preparation process thereof | |
CN100404104C (en) | Ammonia filtering material, its preparing process and ammonia removing method using the same | |
CN113337219A (en) | Antibacterial and antiviral aldehyde-removing coating and preparation method thereof | |
CN113265169A (en) | Antibacterial antiviral formaldehyde-removing antifouling agent and preparation method thereof, glazed tile and preparation method thereof | |
CN113025104A (en) | Negative ion paint additive for removing formaldehyde and purifying air and preparation method thereof | |
CN111317848A (en) | Environment-friendly air purifying agent and preparation method thereof |
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: 20200925 |