CN109837063A - A kind of non-chlorine deicing salt of liquid high-efficiency environment friendly and preparation method thereof - Google Patents
A kind of non-chlorine deicing salt of liquid high-efficiency environment friendly and preparation method thereof Download PDFInfo
- Publication number
- CN109837063A CN109837063A CN201910298252.XA CN201910298252A CN109837063A CN 109837063 A CN109837063 A CN 109837063A CN 201910298252 A CN201910298252 A CN 201910298252A CN 109837063 A CN109837063 A CN 109837063A
- Authority
- CN
- China
- Prior art keywords
- parts
- chlorine
- environment friendly
- liquid high
- efficiency environment
- 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
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses non-chlorine deicing salts of a kind of liquid high-efficiency environment friendly and preparation method thereof, belong to deicing salt technical field, according to parts by weight, including following components: 25-50 parts of plant base acylates, 15-35 parts of water solubility C1~C8 Organic Alcohols, 1-2 parts of polyvinyl alcohol, 1-5 parts of composite corrosion inhibitors, 50-60 parts of water.The present invention not chloride ion-containing, avoid the corrosion to metal, cement concrete, on Horticultural crops and crop growth without influence, it avoids being used for a long time and causes the potential hazards such as soil hardening, salinization of soil, more importantly urea in composite corrosion inhibitor etc. can also provide nutrient to soil, to promote the growth of crop.
Description
Technical field
The present invention relates to a kind of deicing salts and preparation method thereof, more particularly to a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly
And preparation method thereof, belong to deicing salt technical field.
Background technique
Deicing salt refers to the medicament that can reduce ice dissolution temperature, is a kind of chemicals, and common deicing salt raw material is easy to get,
Cheap, composition is mainly potassium acetate and villaumite, and is classified with both, and deicing salt is by reducing ice dissolution temperature
Degree melts the accumulated snow on road, dredges convenient for road, it is obvious to sow place's effect, but it is with harmfulness, the study found that deicing salt
The corrodible road surface of residue and automobile rubber tire, currently, the north still uses based on sandy soil and snow shoveling machine under the normal winter, deicing salt
Supplemented by mode remove ice and snow on road surfaces, guarantee that traffic is unobstructed.
With the continuous progress of science, research deepens continuously, and new product should be environmentally protective, road pavement, green plants
And the basic fanout free region of communal facility, and Snow-melting speed is fast, adds that dosage is small, and use cost is low, solves from source traditional
Product reduces influence and destruction of the deicing salt to road and environment to the etching problem of road and bridge to the maximum extent, and snow melt is residual
The product stayed can promote plant production, realizes secondary use, could fundamentally prevent the harm of deicing salt in this way.
Governments at all levels should increase propaganda strength simultaneously, encourage the use for promoting environment protection snow-dissolved agent, and consider to give appropriate warp
Ji subsidy, makes up the price disadvantage of environment protection snow-dissolved agent, finally realizes that inorganic deicing salt is melted by affordable, the novel of environment-friendly high-efficiency
Snow agent is substituted.
Summary of the invention
The main object of the present invention is to provide for a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly and preparation method thereof, is free of
Chloride ion avoids the corrosion to metal, cement concrete.
The purpose of the present invention can reach by using following technical solution:
A kind of non-chlorine deicing salt of liquid high-efficiency environment friendly, including following components: plant base acylate, water solubility C1~C8 have
Machine alcohol, polyvinyl alcohol, composite corrosion inhibitor and water.
Including following components further, according to parts by weight:
25-50 parts of plant base acylates;
15-35 parts of water solubility C1~C8 Organic Alcohols;
1-2 parts of polyvinyl alcohol;
1-5 parts of composite corrosion inhibitors;
50-60 parts of water.
Including following components further, according to parts by weight:
25 parts of plant base acylates;
15 parts of water solubility C1~C8 Organic Alcohols;
1 part of polyvinyl alcohol;
1 part of composite corrosion inhibitor;
50 parts of water.
Including following components further, according to parts by weight:
35 parts of plant base acylates;
25 parts of water solubility C1~C8 Organic Alcohols;
1.5 parts of polyvinyl alcohol;
3 parts of composite corrosion inhibitors;
55 parts of water.
Including following components further, according to parts by weight:
50 parts of plant base acylates;
35 parts of water solubility C1~C8 Organic Alcohols;
2 parts of polyvinyl alcohol;
5 parts of composite corrosion inhibitors;
60 parts of water.
Further, composite corrosion inhibitor is made of inorganic inhibitor, organic inhibitor and urea.
Further, inorganic inhibitor and organic inhibitor quality proportioning are 5:1~1:1.
Further, inorganic inhibitor is zinc dihydrogen phosphate, Quadrafos, silicate, chromate, nitrite, boric acid
One of salt, arsenite, calgon, sodium molybdate, sodium metasilicate, calcium hypochlorite or sodium benzoate.
Further, organic inhibitor is oxygen-containing organic compound, organic compounds containing nitrogen, organic compounds containing sulfur and alkynes
One of class compound, including maltose, sucrose, caramel, sodium gluconate.
A kind of non-chlorine deicing salt preparation method of liquid high-efficiency environment friendly, includes the following steps:
Step 1: 50-60 parts of water being added in a kettle, after being heated to 90 DEG C~95 DEG C, 1-2 parts of polyvinyl alcohol powder are added
After 1~3h of end dissolution, until surface does not have foam;
Step 2: 25-50 parts of plant base acylates are added, 15-35 parts of water solubilitys are added after temperature is down to 60 DEG C or less
C1~C8 Organic Alcohol;
Step 3: continuously adding 1-5 parts of composite corrosion inhibitors, pH value is finally adjusted to 6-9 using bases.
Advantageous effects of the invention: the non-chlorine deicing salt of liquid high-efficiency environment friendly provided by the invention, chloride ion-containing, does not keep away
Exempt from the corrosion to metal, cement concrete, on Horticultural crops and crop growth without influence, avoids being used for a long time and cause soil plate
The potential hazards such as knot, salinization of soil, it is often more important that urea in composite corrosion inhibitor etc. can also provide nutrient to soil, to promote
Into the growth of crop.
Detailed description of the invention
Fig. 1 is the deicing salt process flow of a preferred embodiment of the non-chlorine deicing salt of liquid high-efficiency environment friendly according to the invention
Figure.
Specific embodiment
To make the more clear and clear technical solution of the present invention of those skilled in the art, below with reference to examples and drawings
The present invention is described in further detail, and embodiments of the present invention are not limited thereto.
Embodiment 1:
As shown in Figure 1, the non-chlorine deicing salt of liquid high-efficiency environment friendly that the present embodiment 1 provides, according to parts by weight, including it is following
Component: 25 parts of plant base acylates;15 parts of water solubility C1~C8 Organic Alcohols;1 part of polyvinyl alcohol;1 part of composite corrosion inhibitor;50 parts
Water.
In the present embodiment 1, composite corrosion inhibitor is made of inorganic inhibitor, organic inhibitor and urea, inorganic inhibitor
It is 5:1~1:1 with organic inhibitor quality proportioning.
Inorganic inhibitor is zinc dihydrogen phosphate, Quadrafos, silicate, chromate, nitrite, borate, arsenious acid
One of salt, calgon, sodium molybdate, sodium metasilicate, calcium hypochlorite or sodium benzoate.
Organic inhibitor is oxygen-containing organic compound, organic compounds containing nitrogen, organic compounds containing sulfur and acetylene compound
One of, including maltose, sucrose, caramel, sodium gluconate.
The non-chlorine deicing salt preparation method of liquid high-efficiency environment friendly that the present embodiment 1 provides, includes the following steps:
Step 1: 50-60 parts of water being added in a kettle, after being heated to 90 DEG C~95 DEG C, 1-2 parts of polyvinyl alcohol powder are added
After 1~3h of end dissolution, until surface does not have foam;
Step 2: 25-50 parts of plant base acylates are added, 15-35 parts of water solubilitys are added after temperature is down to 60 DEG C or less
C1~C8 Organic Alcohol;
Step 3: continuously adding 1-5 parts of composite corrosion inhibitors, pH value is finally adjusted to 6-9 using bases.
Embodiment 2:
As shown in Figure 1, the non-chlorine deicing salt of liquid high-efficiency environment friendly that the present embodiment 2 provides, according to parts by weight, including it is following
Component: 35 parts of plant base acylates;25 parts of water solubility C1~C8 Organic Alcohols;1.5 parts of polyvinyl alcohol;3 parts of composite corrosion inhibitors;55
Part water.
In the present embodiment 2, composite corrosion inhibitor is made of inorganic inhibitor, organic inhibitor and urea, inorganic inhibitor
It is 5:1~1:1 with organic inhibitor quality proportioning.
Inorganic inhibitor is zinc dihydrogen phosphate, Quadrafos, silicate, chromate, nitrite, borate, arsenious acid
One of salt, calgon, sodium molybdate, sodium metasilicate, calcium hypochlorite or sodium benzoate.
Organic inhibitor is oxygen-containing organic compound, organic compounds containing nitrogen, organic compounds containing sulfur and acetylene compound
One of, including maltose, sucrose, caramel, sodium gluconate.
The non-chlorine deicing salt preparation method of liquid high-efficiency environment friendly that the present embodiment 2 provides, includes the following steps:
Step 1: 50-60 parts of water being added in a kettle, after being heated to 90 DEG C~95 DEG C, 1-2 parts of polyvinyl alcohol powder are added
After 1~3h of end dissolution, until surface does not have foam;
Step 2: 25-50 parts of plant base acylates are added, 15-35 parts of water solubilitys are added after temperature is down to 60 DEG C or less
C1~C8 Organic Alcohol;
Step 3: continuously adding 1-5 parts of composite corrosion inhibitors, pH value is finally adjusted to 6-9 using bases.
Embodiment 3:
As shown in Figure 1, the non-chlorine deicing salt of liquid high-efficiency environment friendly that the present embodiment 3 provides, according to parts by weight, including it is following
Component: 50 parts of plant base acylates;35 parts of water solubility C1~C8 Organic Alcohols;2 parts of polyvinyl alcohol;5 parts of composite corrosion inhibitors;60 parts
Water.
In the present embodiment 3, composite corrosion inhibitor is made of inorganic inhibitor, organic inhibitor and urea, inorganic inhibitor
It is 5:1~1:1 with organic inhibitor quality proportioning.
Inorganic inhibitor is zinc dihydrogen phosphate, Quadrafos, silicate, chromate, nitrite, borate, arsenious acid
One of salt, calgon, sodium molybdate, sodium metasilicate, calcium hypochlorite or sodium benzoate.
Organic inhibitor is oxygen-containing organic compound, organic compounds containing nitrogen, organic compounds containing sulfur and acetylene compound
One of, including maltose, sucrose, caramel, sodium gluconate.
The non-chlorine deicing salt preparation method of liquid high-efficiency environment friendly that the present embodiment 3 provides, includes the following steps:
Step 1: 50-60 parts of water being added in a kettle, after being heated to 90 DEG C~95 DEG C, 1-2 parts of polyvinyl alcohol powder are added
After 1~3h of end dissolution, until surface does not have foam;
Step 2: 25-50 parts of plant base acylates are added, 15-35 parts of water solubilitys are added after temperature is down to 60 DEG C or less
C1~C8 Organic Alcohol;
Step 3: continuously adding 1-5 parts of composite corrosion inhibitors, pH value is finally adjusted to 6-9 using bases.
The non-chlorine deicing salt of liquid high-efficiency environment friendly provided by the above embodiment is detected, the basic condition of detection such as table 1
It is shown:
The basic condition of the non-chlorine deicing salt detection of 1 liquid high-efficiency environment friendly of table
The non-chlorine deicing salt of liquid high-efficiency environment friendly provided by the above embodiment is detected, detection project and result such as table 2
It is shown:
The non-chlorine deicing salt detection project of 2 liquid high-efficiency environment friendly of table and result
The non-chlorine deicing salt of liquid high-efficiency environment friendly provided by the above embodiment is detected, detection project and foundation such as table 3
It is shown:
The non-chlorine deicing salt detection project of 3 liquid high-efficiency environment friendly of table and foundation
In conclusion in the present embodiment, the non-chlorine deicing salt of liquid high-efficiency environment friendly provided in this embodiment has brilliance
Snow melt ability, snow melt ability up to calcium chloride snow melting ability 140% or more;Excellent sustained release performance, to the rate of corrosion of 20# steel
Less than 0.01mm/a, 0.002mm/a is less than to the rate of corrosion of copper and aluminium;Not chloride ion-containing is avoided to metal, cement concrete
Corrosion avoids being used for a long time and causes the potential hazards such as soil hardening, salinization of soil on Horticultural crops and crop growth without influence,
More importantly urea in composite corrosion inhibitor etc. can also provide nutrient to soil, to promote the growth of crop.
The above, further embodiment only of the present invention, but scope of protection of the present invention is not limited thereto, and it is any
Within the scope of the present disclosure, according to the technique and scheme of the present invention and its design adds those familiar with the art
With equivalent substitution or change, protection scope of the present invention is belonged to.
Claims (10)
1. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly, which is characterized in that including following components: plant base acylate, water-soluble
Property C1~C8 Organic Alcohol, polyvinyl alcohol, composite corrosion inhibitor and water.
2. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly as described in claim 1, which is characterized in that according to parts by weight, packet
Include following components:
25-50 parts of plant base acylates;
15-35 parts of water solubility C1~C8 Organic Alcohols;
1-2 parts of polyvinyl alcohol;
1-5 parts of composite corrosion inhibitors;
50-60 parts of water.
3. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly as claimed in claim 2, which is characterized in that according to parts by weight, packet
Include following components:
25 parts of plant base acylates;
15 parts of water solubility C1~C8 Organic Alcohols;
1 part of polyvinyl alcohol;
1 part of composite corrosion inhibitor;
50 parts of water.
4. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly as claimed in claim 2, which is characterized in that according to parts by weight, packet
Include following components:
35 parts of plant base acylates;
25 parts of water solubility C1~C8 Organic Alcohols;
1.5 parts of polyvinyl alcohol;
3 parts of composite corrosion inhibitors;
55 parts of water.
5. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly as claimed in claim 2, which is characterized in that according to parts by weight, packet
Include following components:
50 parts of plant base acylates;
35 parts of water solubility C1~C8 Organic Alcohols;
2 parts of polyvinyl alcohol;
5 parts of composite corrosion inhibitors;
60 parts of water.
6. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly as described in claim 1, which is characterized in that composite corrosion inhibitor is by inorganic
Corrosion inhibiter, organic inhibitor and urea composition.
7. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly as claimed in claim 6, which is characterized in that inorganic inhibitor with it is organic
Corrosion inhibiter quality proportioning is 5:1~1:1.
8. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly as claimed in claim 6, which is characterized in that inorganic inhibitor is phosphoric acid
Dihydro zinc, Quadrafos, silicate, chromate, nitrite, borate, arsenite, calgon, sodium molybdate, inclined silicon
One of sour sodium, calcium hypochlorite or sodium benzoate.
9. a kind of non-chlorine deicing salt of liquid high-efficiency environment friendly as described in claim 1, which is characterized in that organic inhibitor is oxygen-containing
One of organic compound, organic compounds containing nitrogen, organic compounds containing sulfur and acetylene compound, including maltose, sucrose,
Caramel, sodium gluconate.
10. a kind of non-chlorine deicing salt preparation method of liquid high-efficiency environment friendly as described in any one of claims 1-9, feature exist
In including the following steps:
Step 1: 50-60 parts of water being added in a kettle, after being heated to 90 DEG C~95 DEG C, it is molten that 1-2 parts of pva powders are added
After solving 1~3h, until surface does not have foam;
Step 2: be added 25-50 part plant base acylates, after temperature is down to 60 DEG C or less addition 15-35 parts of water solubility C1~
C8 Organic Alcohol;
Step 3: continuously adding 1-5 parts of composite corrosion inhibitors, pH value is finally adjusted to 6-9 using bases.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910298252.XA CN109837063A (en) | 2019-04-15 | 2019-04-15 | A kind of non-chlorine deicing salt of liquid high-efficiency environment friendly and preparation method thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910298252.XA CN109837063A (en) | 2019-04-15 | 2019-04-15 | A kind of non-chlorine deicing salt of liquid high-efficiency environment friendly and preparation method thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN109837063A true CN109837063A (en) | 2019-06-04 |
Family
ID=66887132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910298252.XA Pending CN109837063A (en) | 2019-04-15 | 2019-04-15 | A kind of non-chlorine deicing salt of liquid high-efficiency environment friendly and preparation method thereof |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN109837063A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111518515A (en) * | 2020-04-01 | 2020-08-11 | 中公高科养护科技股份有限公司 | Slow-release anti-icing microcapsule, preparation method and application method |
CN111961442A (en) * | 2020-09-21 | 2020-11-20 | 中盐工程技术研究院有限公司 | Environment-friendly clean snow-melting agent |
CN115085659A (en) * | 2022-06-07 | 2022-09-20 | 黄山九星环保科技股份有限公司 | Automatic deicing and snow melting system applied to solar photovoltaic panel |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09132772A (en) * | 1995-11-07 | 1997-05-20 | Hokkaido Soda Kk | Snow and ice melting agent and water freezing preventer |
US20060049378A1 (en) * | 2004-08-20 | 2006-03-09 | Joyful Future Co., Ltd. | Composition for non-chloride based and less corrosive liquid type deicer |
CN102899004A (en) * | 2012-09-21 | 2013-01-30 | 湖北省高速公路实业开发有限公司 | Green environment-friendly snow-melting liquid and preparation method thereof |
CN104877635A (en) * | 2015-06-02 | 2015-09-02 | 长安大学 | Environment-friendly composite snow-melting agent for emulsified asphalt, and preparation method and application method of environment-friendly composite snow-melting agent |
CN107828376A (en) * | 2017-11-21 | 2018-03-23 | 李义民 | Environment-friendly type ferment liquid Snow Agent and preparation method thereof |
CN108048038A (en) * | 2018-02-11 | 2018-05-18 | 柳昊辰 | Ice melting agent and preparation method thereof |
CN108395878A (en) * | 2018-02-13 | 2018-08-14 | 沈阳工业大学 | A kind of dedicated efficient green deicing salt in airport |
CN109777356A (en) * | 2018-10-31 | 2019-05-21 | 煤炭科学技术研究院有限公司 | A kind of environment protecting type coal transport antifreezing agent and its preparation method |
-
2019
- 2019-04-15 CN CN201910298252.XA patent/CN109837063A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09132772A (en) * | 1995-11-07 | 1997-05-20 | Hokkaido Soda Kk | Snow and ice melting agent and water freezing preventer |
US20060049378A1 (en) * | 2004-08-20 | 2006-03-09 | Joyful Future Co., Ltd. | Composition for non-chloride based and less corrosive liquid type deicer |
CN102899004A (en) * | 2012-09-21 | 2013-01-30 | 湖北省高速公路实业开发有限公司 | Green environment-friendly snow-melting liquid and preparation method thereof |
CN104877635A (en) * | 2015-06-02 | 2015-09-02 | 长安大学 | Environment-friendly composite snow-melting agent for emulsified asphalt, and preparation method and application method of environment-friendly composite snow-melting agent |
CN107828376A (en) * | 2017-11-21 | 2018-03-23 | 李义民 | Environment-friendly type ferment liquid Snow Agent and preparation method thereof |
CN108048038A (en) * | 2018-02-11 | 2018-05-18 | 柳昊辰 | Ice melting agent and preparation method thereof |
CN108395878A (en) * | 2018-02-13 | 2018-08-14 | 沈阳工业大学 | A kind of dedicated efficient green deicing salt in airport |
CN109777356A (en) * | 2018-10-31 | 2019-05-21 | 煤炭科学技术研究院有限公司 | A kind of environment protecting type coal transport antifreezing agent and its preparation method |
Non-Patent Citations (1)
Title |
---|
刘宝俊: "《材料的腐蚀及其控制》", 28 February 1989 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111518515A (en) * | 2020-04-01 | 2020-08-11 | 中公高科养护科技股份有限公司 | Slow-release anti-icing microcapsule, preparation method and application method |
CN111518515B (en) * | 2020-04-01 | 2022-08-12 | 中公高科养护科技股份有限公司 | Slow-release anti-icing microcapsule, preparation method and application method |
CN111961442A (en) * | 2020-09-21 | 2020-11-20 | 中盐工程技术研究院有限公司 | Environment-friendly clean snow-melting agent |
CN115085659A (en) * | 2022-06-07 | 2022-09-20 | 黄山九星环保科技股份有限公司 | Automatic deicing and snow melting system applied to solar photovoltaic panel |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101629065B (en) | Environment protection snow-dissolved agent and preparation method thereof | |
CN109837063A (en) | A kind of non-chlorine deicing salt of liquid high-efficiency environment friendly and preparation method thereof | |
CN104059610A (en) | Coating type environment-friendly snow-melting agent and preparation method thereof | |
CN103342988B (en) | Environment-friendly snow melting agent and preparation method thereof | |
US7666324B2 (en) | Snow removal agent and preparation method thereof | |
CN101735770A (en) | Efficient composite anti-corrosive snow melt agent | |
KR100219190B1 (en) | Snow-melting agent | |
CN104073221A (en) | Environment-friendly non-chlorine-salt snow melting and deicing agent and preparation method thereof | |
CN102408873A (en) | Powder and paint for inhibiting road from freezing and preparation methods thereof | |
CN111748319A (en) | Snow-melting agent | |
CN101928549A (en) | Environmentally friendly snow melting agent and preparation method thereof | |
CN105542716A (en) | Environment-friendly snow quick melting agent and preparing method thereof | |
CN104355984A (en) | Preparation process and application of calcium magnesium acetate | |
US20030071241A1 (en) | Environmentally safe and low corrosive de-icers and a method of manufacturing same | |
CN108084965A (en) | A kind of environment-friendly snowmelt agent | |
CN111704891A (en) | Composite ice and snow fast melting agent | |
CN105349101A (en) | Environmental protection snow melting agent and preparation method therefor | |
CN108084966A (en) | A kind of environment-friendly snowmelt agent | |
CN106634842A (en) | Low-corrosivity environmentally-friendly compound antiskid snow-melting agent and preparation method thereof | |
CN105778865A (en) | Environment-friendly chloride-free snow melt antifreezing agent and preparation method thereof | |
CN107936923A (en) | A kind of environment-friendly snowmelt agent | |
KR102459586B1 (en) | Low salt eco-friendly liquid snow removing agent and its manufacturing method | |
CN105385415A (en) | Economical environment-friendly snow-melting agent and preparation method thereof | |
CN110205098B (en) | Industrial salt snow-melting agent additive and using method | |
CN108048036A (en) | A kind of deicing salt |
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: 20190604 |