Inventor · disambiguated record
Masahisa Ishigami
Also filed as: ISHIGAMI MASAHISA
3 granted patents·41 citations·filing 1975–1981
71Inventor score
Top patents by PatentIndex Score
3 records- 0154US4455149AProcess for the production of fuel compositionsMARUZEN OIL CO LTD·Filed 1981·Granted Jun 19, 1984·16 cites·21 claims
- 0253US3992510AMethod for recovery of iodineHARIMA CHEMICALS INC·Filed 1975·Granted Nov 16, 1976·14 cites·5 claims
- 0350US3980630AMethod for preparation of emulsifier for emulsion polymerizationHARIMA CHEMICALS INC·Filed 1975·Granted Sep 14, 1976·11 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Masahisa Ishigami 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 →