Inventor · disambiguated record
Richard E. Freis
Also filed as: FREIS RICHARD E
4 granted patents·108 citations·filing 1975–1987
79Inventor score
Top patents by PatentIndex Score
4 records- 0189US4518459AMethods of deinking secondary fibersECONOMICS LAB·Filed 1983·Granted May 21, 1985·40 cites·23 claims
- 0284US4643800AMethods of decontaminating secondary fiberDIAMOND SHAMROCK CHEM·Filed 1985·Granted Feb 17, 1987·36 cites·16 claims
- 0369US4810328AMethod of brown stock washingDIAMOND SHAMROCK CHEM·Filed 1987·Granted Mar 7, 1989·16 cites·29 claims
- 0452US3960781AIsocyanate-capped surface active compositions and methods of using themECONOMICS LAB·Filed 1975·Granted Jun 1, 1976·16 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Richard E. Freis 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 →