CN102746851A - Drought and cold resistant water-retaining agent and its preparation method - Google Patents
Drought and cold resistant water-retaining agent and its preparation method Download PDFInfo
- Publication number
- CN102746851A CN102746851A CN2012102207337A CN201210220733A CN102746851A CN 102746851 A CN102746851 A CN 102746851A CN 2012102207337 A CN2012102207337 A CN 2012102207337A CN 201210220733 A CN201210220733 A CN 201210220733A CN 102746851 A CN102746851 A CN 102746851A
- Authority
- CN
- China
- Prior art keywords
- grams
- water
- drought
- soil
- retaining agent
- 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.)
- Granted
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 34
- PQUXFUBNSYCQAL-UHFFFAOYSA-N 1-(2,3-difluorophenyl)ethanone Chemical compound CC(=O)C1=CC=CC(F)=C1F PQUXFUBNSYCQAL-UHFFFAOYSA-N 0.000 claims abstract description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 9
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229940047670 sodium acrylate Drugs 0.000 claims abstract description 9
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims abstract description 9
- 229910000368 zinc sulfate Inorganic materials 0.000 claims abstract description 9
- 229960001763 zinc sulfate Drugs 0.000 claims abstract description 9
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229920002472 Starch Polymers 0.000 claims abstract description 8
- 239000001110 calcium chloride Substances 0.000 claims abstract description 8
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 8
- 239000000741 silica gel Substances 0.000 claims abstract description 8
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 8
- 235000019698 starch Nutrition 0.000 claims abstract description 8
- 239000008107 starch Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 6
- 239000013618 particulate matter Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 33
- 230000000694 effects Effects 0.000 abstract description 14
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 1
- 206010016807 Fluid retention Diseases 0.000 abstract 1
- 229940114077 acrylic acid Drugs 0.000 abstract 1
- 239000000440 bentonite Substances 0.000 abstract 1
- 229910000278 bentonite Inorganic materials 0.000 abstract 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 abstract 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 abstract 1
- 229940080313 sodium starch Drugs 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 241000196324 Embryophyta Species 0.000 description 6
- 241000209140 Triticum Species 0.000 description 5
- 235000021307 Triticum Nutrition 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 230000009746 freeze damage Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000005923 long-lasting effect Effects 0.000 description 2
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- -1 is suction Chemical compound 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention relates to a drought and cold resistant water-retaining agent and its preparation method. The preparation method consists of: adopting acrylic acid, sodium acrylate, and starch for reaction to generate sodium polyacrylate, which is mixed with silica gel, calcium chloride, copper sulfate, zinc sulfate, bentonite, diatomite and the like respectively, then conducting crushing, and uniform stirring so as to obtain the drought and cold resistant water-retaining agent. Application of the invention can make the effective duration of drought resistance and water retention of soil up to at least more than 3 years. Compared with traditional drought resistant water-retaining agents, the water-retaining agent provided in the invention has a good soil antifreezing effect, and plants grow in the soil applied with the water-retaining agent have substantial frost damage prevention effects.
Description
Technical field
The invention belongs to agricultural technology field, particularly relate to cold-resistant water-holding agent of a kind of drought resisting and preparation method thereof.
Background technology
The major ingredient of present general anti-drought water-retaining agent on the market is sodium acrylate and vinylformic acid etc.; Also have and used wilkinite or attapulgite on a small quantity as water-retaining agent; Increased the water conservation effect of water-holding agent, still, effects such as the water conservation of these water-holding agents are also satisfied not to the utmost.Though but these water-holding agents all have certain water conservation drought resisting performance, because its effect is single, still have following weak point: (1) water conservation timeliness is short, is generally 3-5 about the month, can in soil, be decomposed.Repetitive administration has increased use cost every year, has also increased the popularization difficulty; (2) soil does not possess certain freeze-proof; (3) growing plants does not possess certain winter resistance on soil.
Summary of the invention
The object of the present invention is to provide a kind of drought resisting cycle long, can impel soil and plant cold resistance, cost is low and simple water-holding agent and preparation method thereof.
The objective of the invention is to realize through following measure:
The cold-resistant water-holding agent of a kind of drought resisting, form by following raw material:
10 kilograms in 27 kilograms of zeyssatite of sodium acrylate 300 gram vinylformic acid 700 gram starch, 100 gram silica gel 1000 gram calcium chloride, 500 gram copper sulfate 250 gram zinc sulfate, 250 gram wilkinites
The cold-resistant water-holding agent preparation method of a kind of drought resisting is to be prepared from following method:
1. vinylformic acid and sodium acrylate are mixed, with 80r/min rotating speed stir about 20 minutes
Clock adds starch behind the mixing, be heated to 150 ℃, and reacting 30 minutes is yellow thick liquid, becomes white blocks shape PM for particulate matter through drying again;
Reaction formula is:
2. PM for particulate matter that obtains in inciting somebody to action 1. and 1 kilogram in silica gel, calcium chloride 500 grams, copper sulfate 250 grams, zinc sulfate 250 grams, 27 kilograms of wilkinites, 10 kilograms of thorough mixing of zeyssatite; Be crushed to 80 orders then; Press the 80r/min rotating speed and stirred 20 minutes, promptly can be made into product of the present invention.
The present invention compares prior art and has the following advantages:
It is ZX-I that the present invention adopts vinylformic acid, sodium acrylate, starch reaction, and as the basic raw material of water-holding agent, its effect mainly is to absorb moisture, and prevents moisture evaporation; Wilkinite mainly is suction, chessom, and soil is had long lasting water conservation effect; The zeyssatite effect is suction, chessom and soil is had long lasting water conservation effect, wilkinite and zeyssatite are used the suction and the water-retentivity that can better increase water-holding agent simultaneously; The silica gel effect is the same with zeyssatite unlike wilkinite, can only absorb the moisture in the soil, and it can absorb the moisture in the nearly table soil air, plays better suction and water retention; Copper sulfate is the winter resistance of enhancement of plant; Zinc sulfate is the winter resistance of enhancement of plant, adopts copper sulfate and zinc sulfate guarantor to make the winter resistance meeting of plant better simultaneously; Calcium chloride is the freeze-proof that strengthens soil.
Through test for many years, the present invention compares traditional water-loss reducer of soil, possesses following advantage: the time that (1) soil drought-resistant water-preserving is held effect reaches more than 3 years at least; (2) under equal cold conditions, it is better to use the present invention to compare traditional anti-drought water-retaining agent soil antifreezing effect; (3) under same cold conditions, it is remarkable to be grown in the plant frost damage prevention effect of using in the soil of the present invention.
Embodiment
The present invention also will combine embodiment to do further to detail:
The cold-resistant water-holding agent of a kind of drought resisting, form by following raw material:
10 kilograms in 27 kilograms of zeyssatite of sodium acrylate 300 gram vinylformic acid 700 gram starch, 100 gram silica gel 1000 gram calcium chloride, 500 gram copper sulfate 250 gram zinc sulfate, 250 gram wilkinites
A kind of drought resisting is cold-resistant water-holding agent preparation method be prepared from following method:
Vinylformic acid and sodium acrylate are mixed, with 80r/min rotating speed stir about 20 minutes, add starch behind the mixing, be heated to 150 ℃, reacting 30 minutes is yellow thick liquid, becomes white blocks shape PM for particulate matter through drying again; With the PM for particulate matter that obtains and 1 kilogram in silica gel, calcium chloride 500 grams, copper sulfate 250 grams, zinc sulfate 250 grams, 27 kilograms of wilkinites, 10 kilograms of thorough mixing of zeyssatite; Be crushed to 80 orders then; Press the 80r/min rotating speed and stirred 20 minutes, promptly can be made into product of the present invention.
The present invention carried out controlled trial in 2004 on cold non-irrigated institute of Chinese Academy of Sciences Yucheng, Shandong experiment centre winter wheat, and compared with the water-holding agent of producing on the market simultaneously.Test area is 10 mu, and October 5 applied by per 40 kilograms/667 ㎡ amounts of application this water-holding agent with the arable land.On February 1st, 2005 freezed the time just; Observation can be known; Temperature reached-15 ℃ at that time, and bursting by freezing has all taken place the different sandy land surface of not executing water-loss reducer of soil and using " Feng Hua board " water-holding agent, and freeze injury in various degree also takes place the winter wheat of top growth; Use soil surface of the present invention bursting by freezing does not then take place, and any freeze injury does not take place in the winter wheat that grows on the soil yet.On March 15th, 2005, wilting needs have taken place and have watered in the winter wheat blade of planting on other both soil, and the winter wheat blade in the soil that the water-loss reducer of soil that we develop the is used plantation is still very bright-coloured, need not water.
Through the soil weight is measured, on March 15th, 2005 was measured, and the soil weight is more or less the same, and can arrive 2006, measure on March 15th, 2007, and the soil weight of not executing any water-holding agent is 1.32g/cm
3, the water-holding agent soil weight that uses on the market is 1.29g/cm
3, the soil weight of the present invention is 1.22g/cm
3Compare " the Feng Hua board " water-holding agent, the present invention can reduce unit weight 2.27%, plays the effect of chessom.
Through soil moisture content is measured; Measured on March 15th, 2005, soil moisture content is more or less the same, and can arrive 2006, on March 15th, 2007 measured; The soil moisture content (it is heavy to account for dry ground) of not executing any water-holding agent is 12.23%; " The Feng Hua board " the water-holding agent soil moisture content is 14.03% for (account for dry ground heavy),, soil moisture content of the present invention (it is heavy to account for dry ground) is 17.62%.Compare " the Feng Hua board " water-holding agent, soil moisture content of the present invention has increased by 25.59%.
Through water capacity is measured; On March 15th, 2005 was measured; Water capacity is more or less the same, and can arrive 2006, measure on March 15th, 2007, and the water capacity (it is heavy to account for dry ground) of not executing any water-holding agent is 20.61%; " The Feng Hua board " the water-holding agent water capacity is 22.09% for (account for dry ground heavy), water capacity of the present invention (it is heavy to account for dry ground) is 23.63%.Compare " the Feng Hua board " water-holding agent, water capacity of the present invention has increased by 6.97%.
Claims (2)
1. cold-resistant water-holding agent of drought resisting is characterized in that being made up of following raw material:
Sodium acrylate 300 grams, vinylformic acid 700 grams, starch 100 grams, silica gel 1000 grams, calcium chloride 500 grams, copper sulfate 250 grams, zinc sulfate 250 grams, 27 kilograms of wilkinites, 10 kilograms in zeyssatite.
2. according to the preparation method of the cold-resistant water-holding agent of drought resisting according to claim 1, it is characterized in that it being to be prepared from following method:
⑴ mixed vinylformic acid and sodium acrylate, with 80r/min rotating speed stir about 20 minutes
Clock adds starch behind the mixing, be heated to 150 ℃, and reacting 30 minutes is yellow thick liquid, becomes white blocks shape PM for particulate matter through drying again;
⑵ PM for particulate matter that obtain in inciting somebody to action 1. and 1 kilogram in silica gel, calcium chloride 500 grams, copper sulfate 250 grams, zinc sulfate 250 grams, 27 kilograms of wilkinites, 10 kilograms of thorough mixing of zeyssatite are crushed to 80 orders then, press the 80r/min rotating speed and stir 20 minutes, get final product.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210220733.7A CN102746851B (en) | 2012-06-29 | 2012-06-29 | Drought and cold resistant water-retaining agent and its preparation method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210220733.7A CN102746851B (en) | 2012-06-29 | 2012-06-29 | Drought and cold resistant water-retaining agent and its preparation method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102746851A true CN102746851A (en) | 2012-10-24 |
CN102746851B CN102746851B (en) | 2015-06-24 |
Family
ID=47027352
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210220733.7A Expired - Fee Related CN102746851B (en) | 2012-06-29 | 2012-06-29 | Drought and cold resistant water-retaining agent and its preparation method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102746851B (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103910589A (en) * | 2013-01-04 | 2014-07-09 | 苏斌 | Macromolecule polymer-active mineral soil comixed agricultural drought-resistant water-retaining soil improver |
CN105237094A (en) * | 2015-09-11 | 2016-01-13 | 江苏振宇环保科技有限公司 | Steppe soil moisture retention enhancing material preparation method |
CN107177358A (en) * | 2017-05-26 | 2017-09-19 | 全椒县香妃农业专业合作社 | A kind of plantation water-loss reducer of soil and preparation method thereof |
CN107384412A (en) * | 2017-06-27 | 2017-11-24 | 江苏长龙国际贸易有限公司 | A kind of carbon-based purple soil water-loss reducer and preparation method thereof |
CN109053320A (en) * | 2018-07-24 | 2018-12-21 | 信阳市上天梯非金属矿管理区非金属矿技术开发应用研究所 | The bentonite of Sodium Polyacrylate intercalation modification assigns fertile water-retaining agent and preparation method thereof |
CN109762571A (en) * | 2019-01-24 | 2019-05-17 | 吉林农业大学 | A kind of draught resisting and water retaining and preparation method and application method |
CN115385733A (en) * | 2022-05-31 | 2022-11-25 | 浙江恒逸石化研究院有限公司 | Composite water-retaining agent for compost mixture and application thereof |
CN116814274A (en) * | 2023-07-03 | 2023-09-29 | 辽宁省农业科学院 | Cold area farmland carbon-based soil conditioner and preparation method thereof |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5456737A (en) * | 1993-10-04 | 1995-10-10 | Cerad Industries, Inc. | Soil supplement and method of manufacture |
CN1237612A (en) * | 1998-05-12 | 1999-12-08 | 唐山市六通节能材料研究所 | Soil water-reataining fertilizer-keeping agent |
CN1765852A (en) * | 2005-09-16 | 2006-05-03 | 杨永康 | Nourishing water-loss reducer |
KR20090048074A (en) * | 2007-11-09 | 2009-05-13 | 조창열 | Composition of solidification agent for solidifying highly hydrous soil |
CN101913959A (en) * | 2010-07-15 | 2010-12-15 | 孙仁凯 | Water-retention fertilizer |
CN102321486A (en) * | 2011-06-14 | 2012-01-18 | 华南农业大学 | Superabsorbent composite and preparation method thereof |
-
2012
- 2012-06-29 CN CN201210220733.7A patent/CN102746851B/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5456737A (en) * | 1993-10-04 | 1995-10-10 | Cerad Industries, Inc. | Soil supplement and method of manufacture |
CN1237612A (en) * | 1998-05-12 | 1999-12-08 | 唐山市六通节能材料研究所 | Soil water-reataining fertilizer-keeping agent |
CN1765852A (en) * | 2005-09-16 | 2006-05-03 | 杨永康 | Nourishing water-loss reducer |
KR20090048074A (en) * | 2007-11-09 | 2009-05-13 | 조창열 | Composition of solidification agent for solidifying highly hydrous soil |
CN101913959A (en) * | 2010-07-15 | 2010-12-15 | 孙仁凯 | Water-retention fertilizer |
CN102321486A (en) * | 2011-06-14 | 2012-01-18 | 华南农业大学 | Superabsorbent composite and preparation method thereof |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103910589A (en) * | 2013-01-04 | 2014-07-09 | 苏斌 | Macromolecule polymer-active mineral soil comixed agricultural drought-resistant water-retaining soil improver |
CN105237094A (en) * | 2015-09-11 | 2016-01-13 | 江苏振宇环保科技有限公司 | Steppe soil moisture retention enhancing material preparation method |
CN107177358A (en) * | 2017-05-26 | 2017-09-19 | 全椒县香妃农业专业合作社 | A kind of plantation water-loss reducer of soil and preparation method thereof |
CN107384412A (en) * | 2017-06-27 | 2017-11-24 | 江苏长龙国际贸易有限公司 | A kind of carbon-based purple soil water-loss reducer and preparation method thereof |
CN109053320A (en) * | 2018-07-24 | 2018-12-21 | 信阳市上天梯非金属矿管理区非金属矿技术开发应用研究所 | The bentonite of Sodium Polyacrylate intercalation modification assigns fertile water-retaining agent and preparation method thereof |
CN109762571A (en) * | 2019-01-24 | 2019-05-17 | 吉林农业大学 | A kind of draught resisting and water retaining and preparation method and application method |
CN115385733A (en) * | 2022-05-31 | 2022-11-25 | 浙江恒逸石化研究院有限公司 | Composite water-retaining agent for compost mixture and application thereof |
CN115385733B (en) * | 2022-05-31 | 2024-04-05 | 浙江恒逸石化研究院有限公司 | Application of composite water-retaining agent in compost mixture |
CN116814274A (en) * | 2023-07-03 | 2023-09-29 | 辽宁省农业科学院 | Cold area farmland carbon-based soil conditioner and preparation method thereof |
CN116814274B (en) * | 2023-07-03 | 2024-07-23 | 辽宁省农业科学院 | Cold area farmland carbon-based soil conditioner and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
CN102746851B (en) | 2015-06-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102746851B (en) | Drought and cold resistant water-retaining agent and its preparation method | |
CN103651361B (en) | Plants wound protection liquor containing chitosan oligosaccharide | |
CN103641598B (en) | Podocarpus macrophyllus cultivation medium and preparation method thereof | |
CN102167634A (en) | Oligosaccharide-containing foliar fertilizer composite and application thereof | |
CN101475416B (en) | Ginseng composite biological foliage fertilizer | |
CN105461423A (en) | Tung fertilizer and preparation method therefor | |
CN106396901A (en) | Special nutrition-balanced water-soluble fertilizer for pear tree | |
CN101560123A (en) | Humic acid degradable liquid manure plastic film and production method thereof | |
CN103113158A (en) | Slow-release water retention agent/fertilizer composition | |
CN102276360A (en) | Fertilizer special for raising seedlings | |
CN102559197B (en) | Saline-alkali soil modifying agent and preparation method thereof | |
CN102994095A (en) | Soil water-retaining agent | |
WO2019154346A1 (en) | Use of bio-based sulfonate as nutrient source and conditioning agent | |
CN102964182A (en) | Plant fertilizer | |
CN102964185A (en) | Soil fertilizer retention agent | |
CN102443396A (en) | Secondary saline soil repairing agent and production method thereof | |
CN100398625C (en) | Water-loss reducer of soil and its preparation method | |
CN102992916A (en) | Soil water-retaining agent and preparation method thereof | |
CN104961540A (en) | Conditioning agent for improving water content and phosphorus availability of fruit tree rhizosphere soil | |
CN104446858A (en) | Humic acid water-soluble fertilizer | |
CN102173938A (en) | Novel active multi-composite microfertilizer and preparation method thereof | |
CN102372512A (en) | Preparation method of base fertilizer for snow pear mature tree | |
CN108976014A (en) | It a kind of vegetables compounding anti-icing fluid and preparation method thereof and uses | |
CN111165517A (en) | Natural organic-inorganic anti-freezing preparation and production method thereof | |
CN106380348A (en) | Dry hot air-resistant water-retention fertilizer-conservation special-purpose fertilizer for winter wheat |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20200818 Address after: 730000 No.318, Donggang West Road, Chengguan District, Lanzhou City, Gansu Province Patentee after: NORTHWEST INSTITUTE OF ECO-ENVIRONMENT AND RESOURCES, CHINESE ACADEMY OF SCIENCES Address before: Chengguan District of Gansu city of Lanzhou province Donggang West Road 730000 No. 320 Patentee before: COLD AND ARID REGIONS ENVIRONMENTAL AND ENGINEERING Research Institute,CHINESE ACADEMY OF SCIENCES |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 |