Asahi Yukizai Kogyo Co., Ltd.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING370
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5553831 Ball valveDec 20, 94Sep 10, 96[F16K]
5312085 Control valveDec 30, 92May 17, 94[F16K]
5181539 Ball valveAug 19, 91Jan 26, 93[F16K]
5174332 Constant flow valveMay 30, 91Dec 29, 92[G05D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D372073 Ball valveExpiredMar 14, 95Jul 23, 96[]
D370054 Diaphragm valveExpiredFeb 28, 95May 21, 96[]
5476118 Non-stagnant piping systemExpiredJul 18, 94Dec 19, 95[F17D]
5466916 Method and apparatus for joint resin pipes using high-frequency electric induction heatingExpiredJul 25, 94Nov 14, 95[H05B]
5177140 Material for mold and process of forming mold by using this materialExpiredApr 12, 90Jan 05, 93[C08L, C08K]
5137931 Foamable phenolic resin composition and process for preparation thereofExpiredMar 29, 91Aug 11, 92[C08J]
5104581 Tray for integrated circuitExpiredOct 02, 89Apr 14, 92[H01B]
4791956 Constant flow valveExpiredSep 28, 87Dec 20, 88[F16K]
4676268 Plastic gate valveExpiredMar 27, 85Jun 30, 87[F16L]
4676479 Flanged valveExpiredOct 22, 85Jun 30, 87[F16K, F16L]
4616804 Gate valveExpiredJan 30, 84Oct 14, 86[F16K]
4605202 Ball valveExpiredOct 02, 84Aug 12, 86[F16K]
4592534 Valve assemblyExpiredDec 15, 83Jun 03, 86[F16K]
4545565 Diaphragm valveExpiredJun 20, 84Oct 08, 85[F16K, F16L]
4540157 Ball valveExpiredMay 02, 83Sep 10, 85[F16K]
4532271 Bituminous paving material and a method for the preparation thereofExpiredNov 14, 83Jul 30, 85[C08L, C08K]
4516597 Anticorrosive butterfly valveExpiredApr 01, 83May 14, 85[F16L]
4460629 Process for preparation of resin-coated molding sandExpiredJan 08, 82Jul 17, 84[B05D]
4458878 Ball valve assemblyExpiredJul 22, 81Jul 10, 84[F16L]
4411407 Ball valve assemblyExpiredJan 18, 82Oct 25, 83[F16K]

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