Inventor · disambiguated record
Osamu Hirai
Also filed as: HIRAI OSAMU
11 granted patents·158 citations·filing 1982–2002
91Inventor score
Top patents by PatentIndex Score
11 records- 0192US4550353AThin-film magnetic head and method for fabricating the sameCOMPUTER BASIC TECH RES·Filed 1983·Granted Oct 29, 1985·49 cites·26 claims
- 0278US4949209AThin-film magnetic head having special input/output terminal backing connection and method of fabricating the sameHITACHI LTD·Filed 1988·Granted Aug 14, 1990·23 cites·26 claims
- 0373US6743500B2Hollow carbon fiber and production methodHITACHI CHEMICAL CO LTD·Filed 2001·Granted Jun 1, 2004·9 cites·17 claims
- 0467US6641792B2Hollow carbon fiber and production methodHITACHI CHEMICAL CO LTD·Filed 2002·Granted Nov 4, 2003·5 cites·28 claims
- 0566US7273652B2Hollow carbon fiber and production methodHITACHI CHEMICAL CO LTD·Filed 2002·Granted Sep 25, 2007·5 cites·31 claims
- 0664US4427822AProcess for producing particulate polymer having imide groupsHITACHI CHEMICAL CO LTD·Filed 1982·Granted Jan 24, 1984·15 cites·15 claims
- 0763US5547329ARoller bottle handling systemKIRIN BREWERY·Filed 1995·Granted Aug 20, 1996·26 cites·18 claims
- 0855US5540857APurification of liquid crystals and liquid crystal compositionHITACHI CHEMICAL CO LTD·Filed 1994·Granted Jul 30, 1996·10 cites·9 claims
- 0953US5422034APurification of liquid crystals and liquid crystal compositionHITACHI CHEMICAL CO LTD·Filed 1993·Granted Jun 6, 1995·9 cites·9 claims
- 1040US4505818ALiquid chromatographic column packing materialHITACHI CHEMICAL CO LTD·Filed 1983·Granted Mar 19, 1985·5 cites·3 claims
- 1133US4486308AColumn packing material and production thereofHITACHI CHEMICAL CO LTD·Filed 1983·Granted Dec 4, 1984·2 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →