Inventor · disambiguated record
Yoshimasa Fujii
Also filed as: FUJII YOSHIMASA
10 granted patents·310 citations·filing 1979–2019
90Inventor score
Files withHITACHI METALS LTD3HOUSE FOOD INDUSTRIAL CO2SUMITOMO METAL MINING CO2AGENCY IND SCIENCE TECHN1CANADIAN PATENTS DEV1
Top patents by PatentIndex Score
10 records- 0195US4474427AOptical fiber reflective filterCANADIAN PATENTS DEV·Filed 1979·Granted Oct 2, 1984·85 cites·17 claims
- 0288US4803088AContainer packed with instant food for use in microwave ovenHOUSE FOOD INDUSTRIAL CO·Filed 1986·Granted Feb 7, 1989·90 cites·1 claims
- 0385US4753497ADirectional coupler for coupling single-polarization optical fibersHITACHI CABLE·Filed 1984·Granted Jun 28, 1988·48 cites·22 claims
- 0482US4603941APolarization-maintaining fiber system and method of manufacturing the sameAGENCY IND SCIENCE TECHN·Filed 1983·Granted Aug 5, 1986·31 cites·13 claims
- 0576US9592550B2Method for producing castingsHITACHI METALS LTD·Filed 2014·Granted Mar 14, 2017·1 cites·10 claims
- 0672US10471498B2Production method of castings and gas-permeable casting moldHITACHI METALS LTD·Filed 2019·Granted Nov 12, 2019·0 cites·2 claims
- 0768US10232431B2Production method of castings and gas-permeable casting moldHITACHI METALS LTD·Filed 2014·Granted Mar 19, 2019·0 cites·1 claims
- 0867US4622663AOptical wavelength demultiplexerSUMITOMO METAL MINING CO·Filed 1985·Granted Nov 11, 1986·27 cites·4 claims
- 0959US4483879AMethod of preparing dried noodlesHOUSE FOOD INDUSTRIAL CO·Filed 1982·Granted Nov 20, 1984·19 cites·12 claims
- 1040US4684208AOptical branching elementSUMITOMO METAL MINING CO·Filed 1985·Granted Aug 4, 1987·9 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →