Inventor · disambiguated record
Michael Perch
Also filed as: PERCH MICHAEL
4 granted patents·56 citations·filing 1973–1980
74Inventor score
Files withKOPPERS CO INC4
Top patents by PatentIndex Score
4 records- 0175US4225391AMethod of preparing coals for cokingKOPPERS CO INC·Filed 1978·Granted Sep 30, 1980·16 cites·10 claims
- 0272US3990513AMethod of solution mining of coalKOPPERS CO INC·Filed 1973·Granted Nov 9, 1976·35 cites·10 claims
- 0342US4452670AMethod and apparatus for recovering preheater coal finesKOPPERS CO INC·Filed 1980·Granted Jun 5, 1984·5 cites·14 claims
- 0425US4264414AMethod for reducing coke oven carbonization pressureKOPPERS CO INC·Filed 1979·Granted Apr 28, 1981·0 cites·4 claims
Join the waitlist — get patent alerts
Get an alert when Michael Perch 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 →