CN1308595A - 减少从耕作土壤中沥滤出硝酸盐 - Google Patents
减少从耕作土壤中沥滤出硝酸盐 Download PDFInfo
- Publication number
- CN1308595A CN1308595A CN99808365A CN99808365A CN1308595A CN 1308595 A CN1308595 A CN 1308595A CN 99808365 A CN99808365 A CN 99808365A CN 99808365 A CN99808365 A CN 99808365A CN 1308595 A CN1308595 A CN 1308595A
- Authority
- CN
- China
- Prior art keywords
- purposes
- apg
- compound
- requirement
- soil
- 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
- 239000002689 soil Substances 0.000 title claims abstract description 58
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910002651 NO3 Inorganic materials 0.000 title claims abstract description 30
- 238000002386 leaching Methods 0.000 title abstract description 3
- -1 APG compounds Chemical class 0.000 claims abstract description 43
- 241000196324 Embryophyta Species 0.000 claims abstract description 20
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 8
- 239000004094 surface-active agent Substances 0.000 claims abstract description 8
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 4
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 150000002191 fatty alcohols Chemical class 0.000 claims description 35
- 229910052799 carbon Inorganic materials 0.000 claims description 28
- 150000002148 esters Chemical class 0.000 claims description 27
- 150000001721 carbon Chemical group 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 14
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 13
- 229930195729 fatty acid Natural products 0.000 claims description 13
- 239000000194 fatty acid Substances 0.000 claims description 13
- 150000004665 fatty acids Chemical class 0.000 claims description 11
- 230000012010 growth Effects 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 10
- 150000002632 lipids Chemical group 0.000 claims description 9
- 244000005700 microbiome Species 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229930182470 glycoside Natural products 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 235000011187 glycerol Nutrition 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 229920005862 polyol Polymers 0.000 claims description 6
- 150000003077 polyols Chemical class 0.000 claims description 6
- 230000009969 flowable effect Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000004034 viscosity adjusting agent Substances 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 4
- 239000000470 constituent Substances 0.000 claims description 4
- 238000006731 degradation reaction Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- RZRNAYUHWVFMIP-KTKRTIGZSA-N 1-oleoylglycerol Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCC(O)CO RZRNAYUHWVFMIP-KTKRTIGZSA-N 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 238000010790 dilution Methods 0.000 claims description 2
- 239000012895 dilution Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000000839 emulsion Substances 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 2
- 150000004670 unsaturated fatty acids Chemical class 0.000 claims description 2
- 235000021122 unsaturated fatty acids Nutrition 0.000 claims description 2
- 229930182478 glucoside Natural products 0.000 claims 2
- 230000001476 alcoholic effect Effects 0.000 claims 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 claims 1
- 239000003895 organic fertilizer Substances 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 125000002769 thiazolinyl group Chemical group 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 10
- 238000003973 irrigation Methods 0.000 abstract description 3
- 230000002262 irrigation Effects 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 229930195735 unsaturated hydrocarbon Natural products 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 24
- 239000007788 liquid Substances 0.000 description 23
- 229910052757 nitrogen Inorganic materials 0.000 description 12
- 239000003337 fertilizer Substances 0.000 description 11
- 239000011521 glass Substances 0.000 description 9
- 239000013543 active substance Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000000080 wetting agent Substances 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 239000013530 defoamer Substances 0.000 description 6
- 230000008635 plant growth Effects 0.000 description 6
- 239000012752 auxiliary agent Substances 0.000 description 5
- 150000002338 glycosides Chemical class 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 4
- WUOACPNHFRMFPN-VIFPVBQESA-N (R)-(+)-alpha-terpineol Chemical class CC1=CC[C@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-VIFPVBQESA-N 0.000 description 3
- 239000000618 nitrogen fertilizer Substances 0.000 description 3
- 239000011297 pine tar Substances 0.000 description 3
- 229940068124 pine tar Drugs 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- ZFMSMUAANRJZFM-UHFFFAOYSA-N Estragole Chemical compound COC1=CC=C(CC=C)C=C1 ZFMSMUAANRJZFM-UHFFFAOYSA-N 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- 230000003254 anti-foaming effect Effects 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003599 detergent Substances 0.000 description 2
- 239000003480 eluent Substances 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 229920001542 oligosaccharide Polymers 0.000 description 2
- 150000002482 oligosaccharides Chemical class 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- 241001270131 Agaricus moelleri Species 0.000 description 1
- DTGKSKDOIYIVQL-UHFFFAOYSA-N Borneol Chemical compound C1CC2(C)C(O)CC1C2(C)C DTGKSKDOIYIVQL-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000723346 Cinnamomum camphora Species 0.000 description 1
- 241000218631 Coniferophyta Species 0.000 description 1
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 1
- 208000002720 Malnutrition Diseases 0.000 description 1
- 241001282153 Scopelogadus mizolepis Species 0.000 description 1
- ACIAHEMYLLBZOI-ZZXKWVIFSA-N Unsaturated alcohol Chemical compound CC\C(CO)=C/C ACIAHEMYLLBZOI-ZZXKWVIFSA-N 0.000 description 1
- LPQOADBMXVRBNX-UHFFFAOYSA-N ac1ldcw0 Chemical compound Cl.C1CN(C)CCN1C1=C(F)C=C2C(=O)C(C(O)=O)=CN3CCSC1=C32 LPQOADBMXVRBNX-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 238000006136 alcoholysis reaction Methods 0.000 description 1
- WQZGKKKJIJFFOK-PQMKYFCFSA-N alpha-D-mannose Chemical compound OC[C@H]1O[C@H](O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-PQMKYFCFSA-N 0.000 description 1
- SRBFZHDQGSBBOR-QMKXCQHVSA-N alpha-L-arabinopyranose Chemical compound O[C@H]1CO[C@@H](O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-QMKXCQHVSA-N 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- RUJPNZNXGCHGID-UHFFFAOYSA-N beta-terpineol Chemical compound CC(=C)C1CCC(C)(O)CC1 RUJPNZNXGCHGID-UHFFFAOYSA-N 0.000 description 1
- 239000012867 bioactive agent Substances 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 238000004401 flow injection analysis Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000010413 gardening Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 150000002830 nitrogen compounds Chemical class 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000000972 organotrophic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- RBNWAMSGVWEHFP-UHFFFAOYSA-N trans-p-Menthane-1,8-diol Chemical compound CC(C)(O)C1CCC(C)(O)CC1 RBNWAMSGVWEHFP-UHFFFAOYSA-N 0.000 description 1
- 235000000112 undernutrition Nutrition 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/70—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting wettability, e.g. drying agents
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/50—Surfactants; Emulsifiers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Fertilizers (AREA)
- Cultivation Of Plants (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19830887A DE19830887A1 (de) | 1998-07-10 | 1998-07-10 | Reduktion der Nitrat-Auswaschung aus Kulturböden |
| DE19830887.6 | 1998-07-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1308595A true CN1308595A (zh) | 2001-08-15 |
Family
ID=7873581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99808365A Pending CN1308595A (zh) | 1998-07-10 | 1999-07-01 | 减少从耕作土壤中沥滤出硝酸盐 |
Country Status (13)
| Country | Link |
|---|---|
| EP (1) | EP1097114A1 (xx) |
| JP (1) | JP2002520246A (xx) |
| KR (1) | KR20010053467A (xx) |
| CN (1) | CN1308595A (xx) |
| AU (1) | AU4903499A (xx) |
| BR (1) | BR9911982A (xx) |
| CA (1) | CA2337536A1 (xx) |
| DE (1) | DE19830887A1 (xx) |
| HU (1) | HUP0105436A2 (xx) |
| MX (1) | MXPA01000272A (xx) |
| PL (1) | PL345490A1 (xx) |
| TR (1) | TR200100057T2 (xx) |
| WO (1) | WO2000002833A1 (xx) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102574748A (zh) * | 2009-08-06 | 2012-07-11 | 罗特哈姆斯太德研究有限公司 | 一种减少硝酸盐从土壤淋失的方法 |
| CN111315712A (zh) * | 2017-11-06 | 2020-06-19 | 罗地亚经营管理公司 | 肥料组合物 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160073639A1 (en) * | 2013-04-12 | 2016-03-17 | Metbro Distributing L.P. | Soil metabolizable cyanamide pesticide compositions |
| MX2018005841A (es) | 2015-11-09 | 2018-11-09 | Metbro Distributing Lp | Usos de biocidas de cianamidas acuosas previo a la plantacion. |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE159752T1 (de) * | 1991-08-02 | 1997-11-15 | Ronald Peter Hansen | Lösung zur bewässerung von pflanzenwurzeln |
| US5385750A (en) * | 1992-05-14 | 1995-01-31 | Henkel Corporation | Alkyl glycoside compositions with improved wetting properties |
| US5356861A (en) * | 1993-11-19 | 1994-10-18 | Cenex/Land O'lakes Agronomy Company | Homogenous herbicidal adjuvant blend comprising glyphosate, ammonium sulfate, and alkyl polysaccharide |
| US5770543A (en) * | 1996-09-06 | 1998-06-23 | Henkel Corporation | Agricultural compositions comprising alkyl polyglycosides and fatty acids |
| AU6690698A (en) * | 1997-03-07 | 1998-09-22 | Aquatrols Corporation Of America Inc. | Fully compatible surfactant-impregnated water-soluble fertilizer; concentrate; and use |
| DE19748884A1 (de) * | 1997-11-06 | 1999-05-20 | Henkel Kgaa | Fließfähige Mehrkomponentengemische zur Wachstumsförderung der Erdreich-Mikroorganismenflora und ihre Anwendung |
-
1998
- 1998-07-10 DE DE19830887A patent/DE19830887A1/de not_active Withdrawn
-
1999
- 1999-07-01 KR KR1020017000369A patent/KR20010053467A/ko not_active Application Discontinuation
- 1999-07-01 WO PCT/EP1999/004532 patent/WO2000002833A1/de not_active Application Discontinuation
- 1999-07-01 CA CA002337536A patent/CA2337536A1/en not_active Abandoned
- 1999-07-01 BR BR9911982-0A patent/BR9911982A/pt not_active IP Right Cessation
- 1999-07-01 EP EP99932766A patent/EP1097114A1/de not_active Withdrawn
- 1999-07-01 MX MXPA01000272A patent/MXPA01000272A/es unknown
- 1999-07-01 JP JP2000559067A patent/JP2002520246A/ja active Pending
- 1999-07-01 CN CN99808365A patent/CN1308595A/zh active Pending
- 1999-07-01 HU HU0105436A patent/HUP0105436A2/hu unknown
- 1999-07-01 TR TR2001/00057T patent/TR200100057T2/xx unknown
- 1999-07-01 PL PL99345490A patent/PL345490A1/xx unknown
- 1999-07-01 AU AU49034/99A patent/AU4903499A/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102574748A (zh) * | 2009-08-06 | 2012-07-11 | 罗特哈姆斯太德研究有限公司 | 一种减少硝酸盐从土壤淋失的方法 |
| CN102574748B (zh) * | 2009-08-06 | 2015-05-13 | 罗特哈姆斯太德研究有限公司 | 一种减少硝酸盐从土壤淋失的方法 |
| CN111315712A (zh) * | 2017-11-06 | 2020-06-19 | 罗地亚经营管理公司 | 肥料组合物 |
Also Published As
| Publication number | Publication date |
|---|---|
| BR9911982A (pt) | 2001-03-27 |
| TR200100057T2 (tr) | 2001-05-21 |
| JP2002520246A (ja) | 2002-07-09 |
| KR20010053467A (ko) | 2001-06-25 |
| CA2337536A1 (en) | 2000-01-20 |
| PL345490A1 (en) | 2001-12-17 |
| AU4903499A (en) | 2000-02-01 |
| HUP0105436A2 (hu) | 2002-05-29 |
| DE19830887A1 (de) | 2000-01-13 |
| MXPA01000272A (es) | 2002-10-17 |
| EP1097114A1 (de) | 2001-05-09 |
| WO2000002833A1 (de) | 2000-01-20 |
| HU0105436D0 (xx) | 2002-05-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |