CN112694140A - Novel filtering material - Google Patents
Novel filtering material Download PDFInfo
- Publication number
- CN112694140A CN112694140A CN201911003913.8A CN201911003913A CN112694140A CN 112694140 A CN112694140 A CN 112694140A CN 201911003913 A CN201911003913 A CN 201911003913A CN 112694140 A CN112694140 A CN 112694140A
- Authority
- CN
- China
- Prior art keywords
- powder
- kaolin
- clay
- quartz
- calcium carbonate
- 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
- 239000000463 material Substances 0.000 title claims abstract description 55
- 238000001914 filtration Methods 0.000 title claims abstract description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 58
- 239000000843 powder Substances 0.000 claims abstract description 44
- 239000000919 ceramic Substances 0.000 claims abstract description 41
- 239000002699 waste material Substances 0.000 claims abstract description 32
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 29
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 29
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 29
- 239000004927 clay Substances 0.000 claims abstract description 29
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000010453 quartz Substances 0.000 claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 29
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 23
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 150000002500 ions Chemical class 0.000 claims abstract description 6
- 150000001450 anions Chemical class 0.000 claims description 21
- 229910052570 clay Inorganic materials 0.000 claims description 14
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 28
- 241000108664 Nitrobacteria Species 0.000 abstract description 12
- 241000251468 Actinopterygii Species 0.000 abstract description 11
- 241000195493 Cryptophyta Species 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 238000009395 breeding Methods 0.000 abstract description 5
- 230000001488 breeding effect Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 5
- 239000013505 freshwater Substances 0.000 abstract description 5
- 239000013535 sea water Substances 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 abstract description 5
- 241000235342 Saccharomycetes Species 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/045—Filters for aquaria
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a novel filter material, which comprises the following components in parts by weight: 55-70% of ceramic waste, 5-33% of quartz, 2.5-15% of kaolin, 2.5-15% of clay, 5-15% of calcium carbonate, 5-10% of talcum powder, 5-12% of auxiliary material, 1-40% of iron oxide powder and 0.3-8% of negative ion powder; the auxiliary material is a mixture of water glass, paper pulp and adhesive; the novel filtering material can improve the water quality of the fish tank, purify the water quality, resist the breeding of algae, remove fishy smell and peculiar smell, balance the pH value, accelerate the formation of nitrobacteria, reduce the trouble of water change, and is suitable for fresh water and seawater; through high-temperature sintering treatment, a special ultramicropore structure is generated, harmful substances in water are filtered more effectively, a wider attachment area is provided for nitrobacteria, and water quality is purified more effectively; the filter has ultrahigh surface area and filtration area, can quickly culture beneficial floras such as nitrobacteria, saccharomycetes and the like, and the porous structure provides ideal living conditions and environment for the beneficial floras, thereby effectively controlling and stabilizing the water quality.
Description
Technical Field
The invention relates to the technical field of filter materials, in particular to a novel filter material.
Background
The volume of fish bowl is limited, and in this limited space, if do not have filtration system, just as people lack metabolic system, the water will be more and more turbid, can't become limpid again, and the health of fish also does not guarantee. The filter material in the prior fish tank is synthesized by common ceramic raw materials and chemical ceramic pigments, can not effectively remove harmful substances such as phosphorus, nitrogen and the like in water, can not kill harmful bacteria, can not adjust and balance water quality, and is a source for causing various diseases of the fish, so that the design of a novel filter material is very necessary.
Disclosure of Invention
The present invention is directed to a novel filter material to solve the above problems of the background art.
In order to solve the technical problems, the invention provides the following technical scheme: a novel filtering material comprises the following components in percentage by weight: ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder, auxiliary material, ferric oxide powder and anion powder, its characterized in that: the weight parts of the components are respectively as follows: 55-70% of ceramic waste, 5-33% of quartz, 2.5-15% of kaolin, 2.5-15% of clay, 5-15% of calcium carbonate, 5-10% of talcum powder, 5-12% of auxiliary material, 1-40% of iron oxide powder and 0.3-8% of negative ion powder.
According to the technical scheme, the auxiliary material is a mixture of water glass, paper pulp and a binder.
According to the technical scheme, the ceramic waste is crushed into 60-400 meshes of ceramic powder.
According to the technical scheme, the formula of the filter material also comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder, auxiliary materials, ferric oxide powder and anion powder, wherein the filter material comprises the following components in parts by weight: 60-65% of ceramic waste, 10% of quartz, 7-15% of kaolin, 7-15% of clay, 5% of calcium carbonate, 5% of talcum powder, 5% of auxiliary material and 0.5-8% of anion powder.
According to the technical scheme, the formula of the filter material also comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder and anion powder, and the filter material comprises the following components in parts by weight: 55-70% of ceramic waste, 5% of quartz, 8-15% of kaolin, 8-15% of clay, 10% of calcium carbonate, 10% of talcum powder and 0.3% of anion powder.
According to the technical scheme, the formula of the filter material also comprises quartz, kaolin, clay, calcium carbonate and ferric oxide powder, and the filter material comprises the following components in parts by weight: 40% of iron oxide powder, 33% of quartz, 12% of kaolin and clay in total and 15% of calcium carbonate.
According to the technical scheme, the formula of the filter material also comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder, nano silver and anion powder, wherein the components in parts by weight are as follows: 60-70% of ceramic waste, 12% of quartz, 1-15% of kaolin, 1-15% of clay, 12% of calcium carbonate, 2.5% of talcum powder, 0.001% of nano silver and 0.5% of anion powder.
Compared with the prior art, the invention has the following beneficial effects: the novel filter material can release a large amount of negative ions, can improve the water quality of the fish tank, purify the water quality, resist the breeding of algae, remove fishy smell, balance the pH value, accelerate the formation of nitrobacteria and reduce the trouble of water change, and is suitable for fresh water and seawater; through high-temperature sintering treatment, the fish color development is induced to have a superior effect, the special ultramicropore structure effectively increases the amount of chlorine dissolved in water, and meanwhile, a wider attachment area is provided for nitrobacteria, so that the water quality is more effectively purified; the filter has ultrahigh surface area and filtration area, can quickly culture nitrobacteria, saccharomycetes and the like, has a porous structure, provides ideal living conditions and environment for beneficial bacteria, and effectively controls and stabilizes water quality.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a technical scheme that:
example 1:
a novel filtering material comprises the following components in percentage by weight: the ceramic powder comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder, auxiliary materials, iron oxide powder and anion powder, wherein the ceramic waste comprises the following components in parts by weight: 60% of ceramic waste, 10% of quartz, 7% of kaolin, 7.5% of clay, 5% of calcium carbonate, 5% of talcum powder, 5% of auxiliary material and 0.5% of anion powder.
Wherein the auxiliary material is a mixture of water glass, paper pulp and a binder; the ceramic waste is crushed into 60-400 mesh ceramic powder.
The finished product obtained in the embodiment has high anion release concentration, and can purify water quality, resist algae breeding and remove fishy smell.
Example 2:
a novel filtering material comprises the following components in percentage by weight: the ceramic material comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder and anion powder, wherein the ceramic waste comprises the following components in parts by weight: 55-70% of ceramic waste, 5% of quartz, 9.7% of kaolin, 10% of clay, 10% of calcium carbonate, 10% of talcum powder and 0.3% of anion powder.
Wherein the auxiliary material is a mixture of water glass, paper pulp and a binder; the ceramic waste is crushed into 60-400 mesh ceramic powder.
The finished product obtained in the embodiment balances the pH value, accelerates the formation of nitrobacteria, reduces the trouble of water change, and is suitable for fresh water and seawater.
Example 3:
a novel filtering material comprises the following components in percentage by weight: quartz, kaolin, clay, calcium carbonate and ferric oxide powder, wherein the weight parts of the components are as follows: 40% of iron oxide powder, 33% of quartz, 12% of kaolin and clay in total and 15% of calcium carbonate.
Wherein the auxiliary material is a mixture of water glass, paper pulp and a binder; the ceramic waste is crushed into 60-400 mesh ceramic powder.
The finished product obtained in the embodiment is subjected to high-temperature sintering treatment, so that the excellent effect of inducing fish color development is achieved, the chlorine dissolving amount in water is effectively increased due to the special ultramicropore structure, a wider attachment area is provided for nitrobacteria, and the water quality is effectively purified.
Example 4:
a novel filtering material comprises the following components in percentage by weight: the ceramic material comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder, nano silver and anion powder, wherein the ceramic waste comprises the following components in parts by weight: 60% of ceramic waste, 12% of quartz, 6% of kaolin, 6.999% of clay, 12% of calcium carbonate, 2.5% of talcum powder, 0.001% of nano-silver and 0.5% of anion powder.
Wherein the auxiliary material is a mixture of water glass, paper pulp and a binder; the ceramic waste is crushed into 60-400 mesh ceramic powder.
The finished product obtained in the embodiment can release a large amount of negative ions, can improve the water quality of the fish tank, purify the water quality, resist the breeding of algae, remove fishy smell, balance the pH value, accelerate the formation of nitrobacteria and reduce the trouble of water change, and is suitable for fresh water and seawater.
The manufacturing method comprises the following steps:
1) adding the selected raw materials except the auxiliary materials into a mixer, uniformly mixing and stirring, adding the auxiliary materials, and continuously uniformly stirring at the stirring speed of 80-100 rpm;
2) pressing the mixed raw materials into corresponding shapes by using different molds according to requirements;
3) then sintering the blank at 1100-1250 ℃ to obtain the ceramic material.
In conclusion, the invention can release a large amount of negative ions, can improve the water quality of the fish tank, purify the water quality, resist the breeding of algae, remove fishy smell, balance the pH value, accelerate the formation of nitrobacteria and reduce the trouble of water change, and is suitable for fresh water and seawater; through high-temperature sintering treatment, the fish color development is induced to have a superior effect, the special ultramicropore structure effectively increases the amount of chlorine dissolved in water, and meanwhile, a wider attachment area is provided for nitrobacteria, so that the water quality is more effectively purified; the filter has ultrahigh surface area and filtration area, can quickly culture nitrobacteria, saccharomycetes and the like, has a porous structure, provides ideal living conditions and environment for beneficial bacteria, and effectively controls and stabilizes water quality.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: 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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A novel filtering material comprises the following components in percentage by weight: ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder, auxiliary material, ferric oxide powder and anion powder, its characterized in that: the weight parts of the components are respectively as follows: 55-70% of ceramic waste, 5-33% of quartz, 2.5-15% of kaolin, 2.5-15% of clay, 5-15% of calcium carbonate, 5-10% of talcum powder, 5-12% of auxiliary material, 1-40% of iron oxide powder and 0.3-8% of negative ion powder.
2. A novel filter material as claimed in claim 1, wherein: the auxiliary material is a mixture of water glass, paper pulp and a binder.
3. A novel filter material as claimed in claim 1, wherein: the ceramic waste is crushed into 60-400 mesh ceramic powder.
4. A novel filter material as claimed in claim 1, wherein: the formula of the filter material also comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder, auxiliary materials, ferric oxide powder and anion powder, wherein the filter material comprises the following components in parts by weight: 60-65% of ceramic waste, 10% of quartz, 7-15% of kaolin, 7-15% of clay, 5% of calcium carbonate, 5% of talcum powder, 5% of auxiliary material and 0.5-8% of anion powder.
5. A novel filter material as claimed in claim 1, wherein: the formula of the filter material also comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder and anion powder, and the filter material comprises the following components in parts by weight: 55-70% of ceramic waste, 5% of quartz, 8-15% of kaolin, 8-15% of clay, 10% of calcium carbonate, 10% of talcum powder and 0.3% of anion powder.
6. A novel filter material as claimed in claim 1, wherein: the formula of the filter material also comprises quartz, kaolin, clay, calcium carbonate and ferric oxide powder, and the weight parts of the components are as follows: 40% of iron oxide powder, 33% of quartz, 12% of kaolin and clay in total and 15% of calcium carbonate.
7. A novel filter material as claimed in claim 1, wherein: the formula of the filter material also comprises ceramic waste, quartz, kaolin, clay, calcium carbonate, talcum powder, nano-silver and anion powder, wherein the components in parts by weight are as follows: 60-70% of ceramic waste, 12% of quartz, 1-15% of kaolin, 1-15% of clay, 12% of calcium carbonate, 2.5% of talcum powder, 0.001% of nano silver and 0.5% of anion powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003913.8A CN112694140A (en) | 2019-10-22 | 2019-10-22 | Novel filtering material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003913.8A CN112694140A (en) | 2019-10-22 | 2019-10-22 | Novel filtering material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112694140A true CN112694140A (en) | 2021-04-23 |
Family
ID=75505459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911003913.8A Pending CN112694140A (en) | 2019-10-22 | 2019-10-22 | Novel filtering material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112694140A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114345012A (en) * | 2022-01-13 | 2022-04-15 | 福州市益通陶瓷科技有限公司 | Filtering material for aquarium and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101417215A (en) * | 2008-11-24 | 2009-04-29 | 伍协 | Ordered porous ceramic film and preparation method thereof |
| CN101830729A (en) * | 2010-06-21 | 2010-09-15 | 中国建筑股份有限公司 | Porous ceramic filter and preparation method thereof |
| CN102219498A (en) * | 2011-03-31 | 2011-10-19 | 厦门建霖工业有限公司 | Water purification ceramic material and preparation method thereof |
| CN103030213A (en) * | 2012-12-11 | 2013-04-10 | 刘建明 | Aquarium filtering material with high porosity and preparation method thereof |
| CN103304216A (en) * | 2013-07-02 | 2013-09-18 | 李润丰 | Ceramic material with mineralization function and preparation method thereof |
| CN107500731A (en) * | 2017-09-22 | 2017-12-22 | 苏州瓷气时代净化设备有限公司 | A kind of micropore ceramic filter scavenging material |
-
2019
- 2019-10-22 CN CN201911003913.8A patent/CN112694140A/en active Pending
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|---|---|---|---|---|
| CN101417215A (en) * | 2008-11-24 | 2009-04-29 | 伍协 | Ordered porous ceramic film and preparation method thereof |
| CN101830729A (en) * | 2010-06-21 | 2010-09-15 | 中国建筑股份有限公司 | Porous ceramic filter and preparation method thereof |
| CN102219498A (en) * | 2011-03-31 | 2011-10-19 | 厦门建霖工业有限公司 | Water purification ceramic material and preparation method thereof |
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| CN103304216A (en) * | 2013-07-02 | 2013-09-18 | 李润丰 | Ceramic material with mineralization function and preparation method thereof |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Hepeng Document name: Refund Approval Notice |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210423 |