Toho Beslon Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4830845 Precursor for production of preoxidized fibers or carbon fibersExpiredOct 18, 85May 16, 89[D01C, B05D, D01F]
4772455 FilterExpiredApr 05, 85Sep 20, 88[B01D]
4753777 Apparatus for continuous production of carbon fibersExpiredJun 12, 85Jun 28, 88[B01J, D01F]
4696742 Active carbon fibers and filter adsorption unit for water purification comprising said fibersExpiredJan 06, 86Sep 29, 87[B01D]
4677818 Composite rope and manufacture thereofExpiredJul 11, 85Jul 07, 87[D02G]
4671950 High-strength carbonaceous fiberExpiredNov 14, 85Jun 09, 87[D01C, D01F]
4659623 Acrylic fibers for producing preoxidized fibersExpiredMay 14, 84Apr 21, 87[D02G]
4576929 Active carbon fibers as adsorbent for water purificationExpiredDec 18, 84Mar 18, 86[B01J]
4543241 Method and apparatus for continuous production of carbon fibersExpiredApr 18, 83Sep 24, 85[D01F]
4522801 Process for producing carbon fiber or graphite fiberExpiredOct 11, 83Jun 11, 85[D01F]
4520623 Activated carbon fiber spun yarnExpiredJul 18, 83Jun 04, 85[D02G]
4508851 Fibrous activated carbon and process of producing itExpiredJun 21, 83Apr 02, 85[C01B]
4500660 Epoxy resin compositionExpiredApr 18, 83Feb 19, 85[C08L, C08K]
4482660 Prepreg for making a composite having high elongation and heat resistance and process for making such composite with the prepregExpiredJan 14, 83Nov 13, 84[C08L]
4474906 Carbon fiber and resin composition reinforced by the sameExpiredJan 20, 83Oct 02, 84[C08K]
4460650 Acrylonitrile fibers, a process for producing acrylonitrile fibers, as well as producing peroxidized fibers, fibrous active carbon or carbon fibers therefromExpiredDec 23, 82Jul 17, 84[D01F, D02G, B32B]
4443507 Heat-moldable laminate and process for molding said laminated structuresExpiredAug 30, 82Apr 17, 84[B29C]
4443726 Brushes and method for the production thereofExpiredMay 10, 82Apr 17, 84[H02K]
4438738 Rocker arm and process for producing the sameExpiredNov 26, 82Mar 27, 84[F01L]
4420512 Emulsion type sizing agent for carbon fibers, process for its preparation, and method for using sameExpiredSep 07, 82Dec 13, 83[B05D]

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