Inventor · disambiguated record
Richard E. Doerr
Also filed as: DOERR RICHARD E
13 granted patents·119 citations·filing 1974–1987
91Inventor score
Top patents by PatentIndex Score
13 records- 0178US4784257AConveyor system including a re-railerCONSOLIDATION COAL CO·Filed 1987·Granted Nov 15, 1988·30 cites·15 claims
- 0256US4798279AMine haulage method and apparatusCONSOLICATION COAL COMPANY·Filed 1986·Granted Jan 17, 1989·17 cites·2 claims
- 0352US3981541AShallow underground coal slurry concentration sumpCONTINENTAL OIL CO·Filed 1974·Granted Sep 21, 1976·14 cites·11 claims
- 0451US4773520ASteering apparatus for a tramming conveyorCONSOLIDATION COAL CO·Filed 1987·Granted Sep 27, 1988·20 cites·5 claims
- 0542US4611955ASlurry pump tram control apparatusCONOCO INC·Filed 1980·Granted Sep 16, 1986·9 cites·3 claims
- 0641US4286822AUnderspoil slurry haulageCONOCO INC·Filed 1979·Granted Sep 1, 1981·8 cites·3 claims
- 0738US4060281ACoal slurry feederCONTINENTAL OIL CO·Filed 1976·Granted Nov 29, 1977·5 cites·3 claims
- 0833US4553881ASlurry pump tram control apparatusCONOCO INC·Filed 1980·Granted Nov 19, 1985·4 cites·4 claims
- 0930US4381161ASlurry recovery from a circular sumpCONOCO INC·Filed 1980·Granted Apr 26, 1983·2 cites·6 claims
- 1030US3966261ACoal slurry recovery systemsCONTINENTAL OIL CO·Filed 1975·Granted Jun 29, 1976·4 cites·9 claims
- 1129US4415207AUnderspoil slurry haulageCONOCO INC·Filed 1981·Granted Nov 15, 1983·1 cites·5 claims
- 1227US4359298AMethod and apparatus for the filling of a slurry sumpCONOCO INC·Filed 1981·Granted Nov 16, 1982·1 cites·12 claims
- 1326US4817786ADrive arrangement for tramming conveyorCONSOLIDATION COAL CO·Filed 1986·Granted Apr 4, 1989·4 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Richard E. Doerr 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 →