Inventor · disambiguated record
Shozi Koyama
Also filed as: KOYAMA SHOZI
4 granted patents·65 citations·filing 1980–1990
77Inventor score
Technology areasF25J
Files withHITACHI LTD4
Top patents by PatentIndex Score
4 records- 0179US4746343AMethod and apparatus for gas separationHITACHI LTD·Filed 1986·Granted May 24, 1988·38 cites·23 claims
- 0244US4696689AMethod and apparatus for separating of product gas from raw gasHITACHI LTD·Filed 1985·Granted Sep 29, 1987·10 cites·28 claims
- 0343US5122175AMethod of and apparatus for producing superpure nitrogenHITACHI LTD·Filed 1990·Granted Jun 16, 1992·11 cites·28 claims
- 0435US4299607AProcess for recovering nitrogen in low pressure type air separation apparatusHITACHI LTD·Filed 1980·Granted Nov 10, 1981·6 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →