Inventor · disambiguated record
Akio Fujiwara
Also filed as: FUJIWARA AKIO
24 granted patents·2 pending applications·383 citations·filing 1974–2023
96Inventor score
Files withASAHI KASEI CHEMICALS CORP5MITSUI TOATSU CHEMICALS5HITACHI LTD4ASAHI CHEMICAL IND2SUMITOMO METAL IND2
Top patents by PatentIndex Score
26 records- 0193US4952272AMethod of manufacturing probing head for testing equipment of semi-conductor large scale integrated circuitsHITACHI LTD·Filed 1989·Granted Aug 28, 1990·105 cites·20 claims
- 0292US9362539B2Polyethylene powder, microporous membrane, and fiberASAHI KASEI CHEMICALS CORP·Filed 2015·Granted Jun 7, 2016·4 cites·20 claims
- 0390US10597796B2Polyethylene powder for fiber, fiber, and articleASAHI KASEI CHEMICALS CORP·Filed 2015·Granted Mar 24, 2020·4 cites·11 claims
- 0490US4748228AProcess for producing organic silicon-terminated polyimide precursor and polyimideHITACHI LTD·Filed 1986·Granted May 31, 1988·55 cites·12 claims
- 0588US4833057AToner composition for the electrophotographyMITSUI TOATSU CHEMICALS·Filed 1987·Granted May 23, 1989·34 cites·9 claims
- 0678US3937448AApparatus for hardening steel pipesSUMITOMO METAL IND·Filed 1974·Granted Feb 10, 1976·17 cites·4 claims
- 0777US5357904AToys for catsHOTTA CO LTD·Filed 1992·Granted Oct 25, 1994·33 cites·11 claims
- 0877US5084368AElectrophotographic tonerMITSUI TOATSU CHEMICALS·Filed 1987·Granted Jan 28, 1992·17 cites·10 claims
- 0971US8173755B2Ultra high molecular weight ethylene copolymer powderFUJIWARA AKIO·Filed 2005·Granted May 8, 2012·4 cites·3 claims
- 1071US6812303B1Olefin polymerizaion catalyst and method for polymerizing an olefin using the catalystASAHI CHEMICAL IND·Filed 2000·Granted Nov 2, 2004·11 cites·9 claims
- 1165US9601738B2Polyethylene powder, microporous membrane, and fiberASAHI KASEI CHEMICALS CORP·Filed 2016·Granted Mar 21, 2017·0 cites·20 claims
- 1264US5399496ADNA shuttle vectors for E. coli, Gluconobacter, and AcetobacterHOFFMAN LAROCHE INC·Filed 1992·Granted Mar 21, 1995·23 cites·8 claims
- 1361US2025215120A1Polyethylene powder and method for producing same, and catalyst for olefin polymerization and method for producing sameASAHI CHEMICAL IND·Filed 2023·Application pending·0 cites
- 1458US5164867AMagnetic disk storage and a method for accessing a track in a magnetic disk storageVICTOR COMPANY OF JAPAN·Filed 1990·Granted Nov 17, 1992·12 cites·11 claims
- 1557US9388303B2Polyethylene resin composition, microporous film and method for manufacturing the microporous film, and separator for batteryASAHI KASEI CHEMICALS CORP·Filed 2014·Granted Jul 12, 2016·0 cites·9 claims
- 1652US9000645B2Rotating electrical machineONISHI TOSHIYUKI·Filed 2011·Granted Apr 7, 2015·1 cites·6 claims
- 1752US4963512AMethod for forming conductor layers and method for fabricating multilayer substratesHITACHI LTD·Filed 1988·Granted Oct 16, 1990·19 cites·10 claims
- 1842US4727010AElectrophotographic process uses toner comprising vinyl copolymerMITSUI TOATSU CHEMICALS·Filed 1986·Granted Feb 23, 1988·6 cites·9 claims
- 1942US4056412AMethod for hardening steel pipesSUMITOMO METAL IND·Filed 1975·Granted Nov 1, 1977·4 cites·3 claims
- 2041US2006287449A1Ultrahigh-molecular ethylene polymerMIYAMOTO KOICHI·Filed 2004·Application pending·0 cites
- 2140US6956002B2Process for polymerization of olefinsASAHI KASEI CHEMICALS CORP·Filed 2002·Granted Oct 18, 2005·0 cites·7 claims
- 2240US5417060AAir fuel ratio control apparatus for an internal combustion engineNIPPON DENSO CO·Filed 1993·Granted May 23, 1995·14 cites·22 claims
- 2340US5178738AIon-beam sputtering apparatus and method for operating the sameHITACHI LTD·Filed 1991·Granted Jan 12, 1993·7 cites·5 claims
- 2440US4857433AElectrophotographic toner for high speed electrophotographyMITSUI TOATSU CHEMICALS·Filed 1987·Granted Aug 15, 1989·5 cites·9 claims
- 2532US5362595AElectrophotographic toner production processMITSUI TOATSU CHEMICALS·Filed 1992·Granted Nov 8, 1994·2 cites·5 claims
- 2629US6328503B1Method for constructing an underground structureYUY ARCHITECTS AND ENGINEERS C·Filed 1998·Granted Dec 11, 2001·6 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Akio Fujiwara 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 →