KOEI CHEMICAL COMPANY, LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C07C ACYCLIC OR CARBOCYCLIC COMPOUNDS 6132
 
  
 
C07D HETEROCYCLIC COMPOUNDS 6156
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2107
 
  
 
C07F ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM, OR TELLURIUM 268
 
  
 
C08B POLYSACCHARIDES; DERIVATIVES THEREOF 130
 
  
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 165
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 1153

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9611280 Tetraaryl borate compound and method for producing sameApr 24, 14Apr 04, 17[C07F, C07C]
9365492 2-(ethylamino)ethanol production methodOct 02, 13Jun 14, 16[C07C, B01J]
9102587 Method for producing 2-(isopropylamino)ethanolJul 12, 13Aug 11, 15[C07C]
8654510 Solid electrolytic capacitor and method of manufacturing solid electrolytic capacitorFeb 25, 11Feb 18, 14[H01B, B01J, H01G]
7411092 Quaternary ammonium saltsFeb 06, 04Aug 12, 08[C07C]
7342116 Process for producing heterocyclic aldehydeMar 25, 03Mar 11, 08[C07D]
7053079 Dihydroxy (3-pyridyl) borane compoundsNov 27, 02May 30, 06[C07F]
5922873 Process for preparing N-tert-butyl-2-pyrazinecarboxamide and N-tert-butyl-2-piperazinecarboxamideJan 20, 98Jul 13, 99[C07D]
5783331 Second battery comprising a gel polymer solid electrolyte and a copolymer of vinyl pyridine with a hydroxyl-group-containing (meth) acrylate as binder for the negative electrodeJul 30, 96Jul 21, 98[H01M]
5693806 Process for producing pyrazine compoundsJul 23, 96Dec 02, 97[C07D]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6444815 Method for producing heteroaromatic aldehydesExpiredAug 18, 00Sep 03, 02[C07D]
6437122 Method for producing a heterocyclic nitrileExpiredDec 14, 00Aug 20, 02[C07D]
6271382 Process for producing organic compound having nitroxide free radicalExpiredAug 28, 00Aug 07, 01[C07D]
6197961 Process for preparing acid salts of .gamma.-(piperidyl)butyric acidExpiredJun 04, 98Mar 06, 01[C07D]
6111113 Process for the preparation of 2,3,5-collidine and 2-ethyl-5-methylpyridineExpiredJun 12, 98Aug 29, 00[C07D]
6034284 Producing method for trimethylolalkaneExpiredOct 20, 98Mar 07, 00[C07C]
6034285 Producing method for trimethylolalkaneExpiredOct 20, 98Mar 07, 00[C07C]
5734055 Process for preparing N-tert-butyl-2-pyrazinecarboxamide and N-tert-butyl-2-piperazinecarboxamideExpiredJul 20, 95Mar 31, 98[C07D]
5668281 Process for preparing tertiary amine-N-oxideExpiredJan 19, 96Sep 16, 97[C07D]
5496949 Pyrazine derivativesExpiredOct 19, 94Mar 05, 96[C07D]
5300650 Process for producing aminomethylpyridine having a chlorine atom at .alpha.-ExpiredSep 25, 92Apr 05, 94[C07D]
5180792 Amine-cured epoxy resin with phenoxyethyl (meth) acrylatesExpiredFeb 20, 91Jan 19, 93[C08L]
5114604 Resin bonded permanent magnet and a binder thereforExpiredNov 22, 89May 19, 92[C04B, H01F]
5071802 Regeneration of catalysts by burning in the presence of alcoholsExpiredMar 07, 90Dec 10, 91[C07D, B01J]
4931561 Process for preparing nitrilesExpiredJul 25, 88Jun 05, 90[C07D]
4910270 Composition containing epoxy resin, di(meth)acrylate, N-heterocylic compound and polyamineExpiredSep 12, 88Mar 20, 90[C08G, C08L]
4812566 Process for preparing 1-dodecylazacycloheptane-2-oneExpiredDec 17, 87Mar 14, 89[C07D]
4810794 Process for producing pyridine basesExpiredFeb 02, 87Mar 07, 89[C07D]
4778890 Process for preparing nitrilesExpiredJul 16, 87Oct 18, 88[C07D]
4658032 Process for producing 2,3,5-collidine and/or 2,3,5,6-tetramethylpyridineExpiredJul 10, 85Apr 14, 87[C07D]

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