Inventor · disambiguated record
Hiroyasu Ogawa
Also filed as: OGAWA HIROYASU
22 granted patents·528 citations·filing 1976–1999
96Inventor score
Top patents by PatentIndex Score
22 records- 0195US4069297AProcess for producing carbon fibersTOHO BESLON CO·Filed 1976·Granted Jan 17, 1978·53 cites·20 claims
- 0290US5030282ACarbon fiber-reinforced cementitious composite and method for producing the compositeTOHO RAYON KK·Filed 1989·Granted Jul 9, 1991·82 cites·21 claims
- 0390US4420512AEmulsion type sizing agent for carbon fibers, process for its preparation, and method for using sameTOHO BESLON CO·Filed 1982·Granted Dec 13, 1983·46 cites·20 claims
- 0489US4073870AProcess for producing carbon fibersTOHO BESLON CO·Filed 1976·Granted Feb 14, 1978·41 cites·10 claims
- 0583US4861809AFriction materialTOHO RAYON KK·Filed 1988·Granted Aug 29, 1989·27 cites·20 claims
- 0683US4520623AActivated carbon fiber spun yarnTOHO BESLON CO·Filed 1983·Granted Jun 4, 1985·23 cites·14 claims
- 0782US4671950AHigh-strength carbonaceous fiberTOHO BESLON CO·Filed 1985·Granted Jun 9, 1987·36 cites·21 claims
- 0881US4891267ACarbon fiber cord for rubber reinforcement and process for producing the sameTOHO RAYON KK·Filed 1986·Granted Jan 2, 1990·31 cites·18 claims
- 0981US4883712ACarbon fiber cord for rubber reinforcementTOHO RAYON KK·Filed 1986·Granted Nov 28, 1989·32 cites·13 claims
- 1080US4460650AAcrylonitrile fibers, a process for producing acrylonitrile fibers, as well as producing peroxidized fibers, fibrous active carbon or carbon fibers therefromTOHO BESLON CO·Filed 1982·Granted Jul 17, 1984·22 cites·13 claims
- 1172US4321446AApparatus for production of graphite fibersTOHO BESLON CO·Filed 1980·Granted Mar 23, 1982·17 cites·7 claims
- 1271US4397831AProduction of carbon fibers from acrylonitrile based fibersTOHO BESLON CO·Filed 1980·Granted Aug 9, 1983·14 cites·2 claims
- 1368US5167945AMethod for producing graphite fiberTOHO RAYON KK·Filed 1990·Granted Dec 1, 1992·19 cites·16 claims
- 1466US4401533ASurface-treatment of carbon fiberTOHO BESLON CO·Filed 1981·Granted Aug 30, 1983·12 cites·11 claims
- 1552US6287677B1Carbon fiber prepeg for wood reinforcement, wooden sheet laminated therewith, wood reinforcing composite comprising carbon fibers and the wooden sheet, and carbon fiber reinforced woodTOHO RAYON KK·Filed 1997·Granted Sep 11, 2001·14 cites·12 claims
- 1652US4898723AMethod for producing high strength, high modulus mesophase-pitch based carbon fibersPETOCA LTD·Filed 1988·Granted Feb 6, 1990·9 cites·1 claims
- 1749US4830845APrecursor for production of preoxidized fibers or carbon fibersTOHO BESLON CO·Filed 1985·Granted May 16, 1989·9 cites·29 claims
- 1848US4682681AEscalatorHITACHI LTD·Filed 1986·Granted Jul 28, 1987·13 cites·7 claims
- 1947US5078840AProcess for the surface treatment of carbon fiber strandsTOHO RAYON KK·Filed 1990·Granted Jan 7, 1992·9 cites·11 claims
- 2041US4536448APreoxidized fiber and process for producing the sameTOHO BESLON CO·Filed 1983·Granted Aug 20, 1985·9 cites·20 claims
- 2137US4892722AMethod for producing high strength, high modulus mesophase-pitch-based carbon fibersPETOCA LTD·Filed 1988·Granted Jan 9, 1990·4 cites·1 claims
- 2233US6596408B1Reinforcing material for wood and reinforced woodTOHO TENAX CO LTD·Filed 1999·Granted Jul 22, 2003·6 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Hiroyasu Ogawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →