AU2016346207B2 - Intermediates to prepare pyridazinone herbicides, and a process to prepare them - Google Patents
Intermediates to prepare pyridazinone herbicides, and a process to prepare them Download PDFInfo
- Publication number
- AU2016346207B2 AU2016346207B2 AU2016346207A AU2016346207A AU2016346207B2 AU 2016346207 B2 AU2016346207 B2 AU 2016346207B2 AU 2016346207 A AU2016346207 A AU 2016346207A AU 2016346207 A AU2016346207 A AU 2016346207A AU 2016346207 B2 AU2016346207 B2 AU 2016346207B2
- Authority
- AU
- Australia
- Prior art keywords
- pyr
- alkyl
- pyridinyl
- cycloalkyl
- formula
- 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.)
- Ceased
Links
- 0 *C(*c1c2cccc1)=C2C(C(N(*)N=C1*)=O)=C1O Chemical compound *C(*c1c2cccc1)=C2C(C(N(*)N=C1*)=O)=C1O 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
- C07D237/02—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings
- C07D237/06—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D237/10—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D237/14—Oxygen atoms
- C07D237/16—Two oxygen atoms
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/58—1,2-Diazines; Hydrogenated 1,2-diazines
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/06—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
- C07D213/16—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom containing only one pyridine ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D213/62—Oxygen or sulfur atoms
- C07D213/70—Sulfur atoms
- C07D213/71—Sulfur atoms to which a second hetero atom is attached
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/04—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/14—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing three or more hetero rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing three or more hetero rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pyridine Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562247438P | 2015-10-28 | 2015-10-28 | |
| US62/247,438 | 2015-10-28 | ||
| PCT/US2016/058755 WO2017074988A1 (en) | 2015-10-28 | 2016-10-26 | Intermediates to prepare pyridazinone herbicides, and a process to prepare them |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2016346207A1 AU2016346207A1 (en) | 2018-05-10 |
| AU2016346207B2 true AU2016346207B2 (en) | 2020-06-04 |
Family
ID=57227157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2016346207A Ceased AU2016346207B2 (en) | 2015-10-28 | 2016-10-26 | Intermediates to prepare pyridazinone herbicides, and a process to prepare them |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US10913719B2 (enExample) |
| EP (1) | EP3368531B1 (enExample) |
| JP (1) | JP6782774B2 (enExample) |
| KR (1) | KR20180075574A (enExample) |
| CN (1) | CN108779106B (enExample) |
| AR (1) | AR106522A1 (enExample) |
| AU (1) | AU2016346207B2 (enExample) |
| BR (1) | BR112018008616B1 (enExample) |
| CA (1) | CA3003410A1 (enExample) |
| HU (1) | HUE049157T2 (enExample) |
| IL (1) | IL258765B (enExample) |
| MX (1) | MX388612B (enExample) |
| RU (1) | RU2743561C2 (enExample) |
| SG (1) | SG11201803134VA (enExample) |
| TW (1) | TWI739769B (enExample) |
| WO (1) | WO2017074988A1 (enExample) |
| ZA (1) | ZA201803362B (enExample) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RS62273B1 (sr) | 2014-04-29 | 2021-09-30 | Fmc Corp | Piridazinonski herbicidi |
| BR112018008616B1 (pt) | 2015-10-28 | 2021-09-08 | Fmc Corporation | Processos para preparar um composto e para preparar os compostos intermediários herbicidas e compostos intermediários herbicidas |
| US10750743B2 (en) | 2015-10-28 | 2020-08-25 | Fmc Corporation | Pyridazinone herbicides |
| TWI785022B (zh) | 2017-03-28 | 2022-12-01 | 美商富曼西公司 | 新穎噠嗪酮類除草劑 |
| EP3645515B1 (en) * | 2017-06-30 | 2021-11-03 | FMC Corporation | 4-(3,4-dihydronaphth-1-yl or 2h-chromen-4-yl)-5-hydroxy-2h-pyradizin-3-ones as herbicides |
| IL281497B2 (en) | 2018-09-27 | 2024-03-01 | Fmc Corp | Intermediates for preparing herbicidal pyridazinones |
| US12435044B2 (en) | 2018-09-27 | 2025-10-07 | Fmc Corporation | Pyridazinone herbicides and pyridazinone intermediates used to prepare a herbicide |
| CN114391014A (zh) | 2019-09-25 | 2022-04-22 | 日本曹达株式会社 | 哒嗪化合物和除草剂 |
| PY2125608A (es) | 2020-04-01 | 2021-12-28 | Fmc Corp | Atropisómeros de derivados de piridazinona como herbicidas |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012033225A1 (en) * | 2010-09-08 | 2012-03-15 | Sumitomo Chemical Company, Limited | Method for producing pyridazinone compounds and intermediate thereof |
| WO2012091156A1 (en) * | 2010-12-27 | 2012-07-05 | Sumitomo Chemical Company, Limited | Pyridazinone compound and herbicide and noxious arthropod controlling agent comprising it |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1221842B (de) | 1965-02-26 | 1966-07-28 | Basf Ag | Herbizide |
| WO2004099163A1 (en) * | 2003-05-05 | 2004-11-18 | New York University | Solid phase synthesis of biaryl triazine library by suzuki cross-coupling reaction |
| WO2005007632A1 (en) | 2003-07-18 | 2005-01-27 | Pharmacia Corporation | Substituted pyridazinones as inhibitors of p38 |
| TWI375669B (en) * | 2006-03-17 | 2012-11-01 | Sumitomo Chemical Co | Pyridazinone compound and use thereof |
| EP2042491A1 (de) | 2007-09-14 | 2009-04-01 | Bayer CropScience AG | Pyridazine als Fungizide |
| CL2008002703A1 (es) | 2007-09-14 | 2009-11-20 | Sumitomo Chemical Co | Compuestos derivados de 1,4-dihidro-2h-piridazin-3-ona; composicion herbicida que comprende a dichos compuestos; metodo de control de malezas; uso de dichos compuestos para el control de malezas; y compuestos intermediarios. |
| CL2008003785A1 (es) | 2007-12-21 | 2009-10-09 | Du Pont | Compuestos derivados de piridazina; composiciones herbicidas que comprenden a dichos compuestos; y método para controlar el crecimiento de la vegetación indeseada. |
| GB0803494D0 (en) | 2008-02-26 | 2008-04-02 | Sterix Ltd | Compound |
| WO2009142732A2 (en) | 2008-05-20 | 2009-11-26 | Cephalon, Inc. | Substituted pyridazinone derivatives as histamine-3 (h3) receptor ligands |
| WO2011045271A1 (de) | 2009-10-15 | 2011-04-21 | Bayer Cropscience Ag | Herbizid wirksame heterocyclylsubstituierte pyridazinone |
| GB201206598D0 (en) | 2012-04-13 | 2012-05-30 | Syngenta Ltd | Herbicidal compounds |
| WO2014031971A1 (en) | 2012-08-24 | 2014-02-27 | E. I. Du Pont De Nemours And Company | Herbicidal pyridazinones |
| US9789096B2 (en) | 2013-09-04 | 2017-10-17 | Board Of Regents Of The University Of Texas System | Methods and compositions for selective and targeted cancer therapy |
| GB2519092A (en) | 2013-10-08 | 2015-04-15 | Syngenta Ltd | Herbicidal Compounds |
| GB201317791D0 (en) | 2013-10-08 | 2013-11-20 | Syngenta Ltd | Herbicidal compounds |
| RS62273B1 (sr) * | 2014-04-29 | 2021-09-30 | Fmc Corp | Piridazinonski herbicidi |
| BR112018008616B1 (pt) | 2015-10-28 | 2021-09-08 | Fmc Corporation | Processos para preparar um composto e para preparar os compostos intermediários herbicidas e compostos intermediários herbicidas |
-
2016
- 2016-10-26 BR BR112018008616-9A patent/BR112018008616B1/pt not_active IP Right Cessation
- 2016-10-26 US US15/771,896 patent/US10913719B2/en not_active Expired - Fee Related
- 2016-10-26 JP JP2018522082A patent/JP6782774B2/ja not_active Expired - Fee Related
- 2016-10-26 WO PCT/US2016/058755 patent/WO2017074988A1/en not_active Ceased
- 2016-10-26 RU RU2018119134A patent/RU2743561C2/ru active
- 2016-10-26 AU AU2016346207A patent/AU2016346207B2/en not_active Ceased
- 2016-10-26 KR KR1020187014511A patent/KR20180075574A/ko not_active Ceased
- 2016-10-26 SG SG11201803134VA patent/SG11201803134VA/en unknown
- 2016-10-26 EP EP16790849.0A patent/EP3368531B1/en not_active Not-in-force
- 2016-10-26 CA CA3003410A patent/CA3003410A1/en not_active Abandoned
- 2016-10-26 CN CN201680076619.8A patent/CN108779106B/zh not_active Expired - Fee Related
- 2016-10-26 MX MX2018005133A patent/MX388612B/es unknown
- 2016-10-26 HU HUE16790849A patent/HUE049157T2/hu unknown
- 2016-10-27 TW TW105134762A patent/TWI739769B/zh not_active IP Right Cessation
- 2016-10-28 AR ARP160103306A patent/AR106522A1/es active IP Right Grant
-
2018
- 2018-04-17 IL IL258765A patent/IL258765B/en active IP Right Grant
- 2018-05-21 ZA ZA2018/03362A patent/ZA201803362B/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012033225A1 (en) * | 2010-09-08 | 2012-03-15 | Sumitomo Chemical Company, Limited | Method for producing pyridazinone compounds and intermediate thereof |
| WO2012091156A1 (en) * | 2010-12-27 | 2012-07-05 | Sumitomo Chemical Company, Limited | Pyridazinone compound and herbicide and noxious arthropod controlling agent comprising it |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180312467A1 (en) | 2018-11-01 |
| AU2016346207A1 (en) | 2018-05-10 |
| RU2743561C2 (ru) | 2021-02-19 |
| TW201722917A (zh) | 2017-07-01 |
| TWI739769B (zh) | 2021-09-21 |
| EP3368531A1 (en) | 2018-09-05 |
| RU2018119134A3 (enExample) | 2020-03-16 |
| ZA201803362B (en) | 2019-08-28 |
| JP2018533580A (ja) | 2018-11-15 |
| MX388612B (es) | 2025-03-11 |
| CN108779106B (zh) | 2021-12-07 |
| IL258765B (en) | 2021-01-31 |
| BR112018008616A2 (pt) | 2019-11-26 |
| IL258765A (en) | 2018-06-28 |
| BR112018008616B1 (pt) | 2021-09-08 |
| US10913719B2 (en) | 2021-02-09 |
| RU2018119134A (ru) | 2019-11-28 |
| JP6782774B2 (ja) | 2020-11-11 |
| KR20180075574A (ko) | 2018-07-04 |
| AR106522A1 (es) | 2018-01-24 |
| SG11201803134VA (en) | 2018-05-30 |
| EP3368531B1 (en) | 2020-01-15 |
| HUE049157T2 (hu) | 2020-09-28 |
| CN108779106A (zh) | 2018-11-09 |
| CA3003410A1 (en) | 2017-05-04 |
| MX2018005133A (es) | 2019-01-10 |
| WO2017074988A1 (en) | 2017-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3368531B1 (en) | Intermediates to prepare pyridazinone herbicides, and a process to prepare them | |
| AU2007282148B2 (en) | Process for the preparation of 2-substituted-5-(1-alkylthio)alkylpyridines | |
| IL276463A (en) | Herbicides pyridazine | |
| EP1537097A2 (en) | Method for preparing 3-halo-4,5-dihydro-1 i h /i -pyrazoles | |
| CN113423690A (zh) | 吡唑衍生物 | |
| CN105246878A (zh) | 制备4,6-双(芳氧基)嘧啶衍生物的方法 | |
| AU2007346135B2 (en) | Process for the preparation of 2-substituted-5-(1-alkylthio) alkylpyridines | |
| KR20170017372A (ko) | 피라졸 카르복실산 유도체의 제조방법 | |
| EP3112350B1 (en) | Method for producing pyrazole compound | |
| EP4069680B1 (en) | Process for synthesis of a 2-(5-isoxazolyl)-phenol | |
| AU2019347854B2 (en) | Intermediates for preparing herbicidal pyridazinones | |
| Naghiyev et al. | Investigation of reaction of various thiophene based Knoevenagel adducts with acetoacetanilide | |
| KR20150032539A (ko) | N-치환된 술폭시민 피리딘 n-옥시드의 제조 | |
| KR101620158B1 (ko) | 1-알킬-2-페닐-4-퀴놀론의 제조방법 | |
| JP4745315B2 (ja) | ３−アミノチオフェン誘導体 | |
| JP2000327678A (ja) | ２−アルキル−３−アミノチオフェン誘導体の製造方法および３−アミノチオフェン誘導体 | |
| WO1996037463A1 (fr) | Procede de fabrication des derives de n-methyle-methoxyimino-acetamide et intermediaires dans ce procede | |
| JP6570301B2 (ja) | ４−フルオロイサチン誘導体の製造方法 | |
| JP2010208966A (ja) | ５−アシル−６−アルキル−２−オキソ−１，２−ジヒドロピリジン−３−カルボニトリル類の製造方法 | |
| JPH08283223A (ja) | Ｎ−メチル−メトキシイミノ酢酸アミド誘導体の製造法およびその中間体 | |
| CN109988148A (zh) | 1-（3-氰基吡啶-2）-2-苯基-4-甲基哌嗪草酸盐的制备方法 | |
| EP1475369A1 (en) | Process for producing 3-unsubstituted 5-amino-4-nitrosopyrazole compound, and 2-hydroxyimino-3-oxopropionitrile, 3-hydrazono-2-hydroxyiminopropionitrile compound, and processes for producing these | |
| HK1139402B (en) | Process for the preparation of 2-substituted-5-(1-alkylthio) alkylpyridines | |
| JPH083146A (ja) | 環状アミド系化合物の製造方法 | |
| WO2015019928A1 (ja) | ビナフチルジアミン誘導体の合成方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PC1 | Assignment before grant (sect. 113) |
Owner name: FMC CORPORATION Free format text: FORMER APPLICANT(S): E. I. DU PONT DE NEMOURS AND COMPANY |
|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |