Inventor · disambiguated record
Ronald W. Umphrey
Also filed as: UMPHREY RONALD W
10 granted patents·187 citations·filing 1973–1982
90Inventor score
Top patents by PatentIndex Score
10 records- 0184US4471843AMethod and apparatus for rotary drill guidanceCONOCO INC·Filed 1982·Granted Sep 18, 1984·63 cites·4 claims
- 0272US4283089APretreatment for fracturing coal seamsCONOCO INC·Filed 1980·Granted Aug 11, 1981·31 cites·6 claims
- 0371US4461359ARotary drill indexing systemCONOCO INC·Filed 1982·Granted Jul 24, 1984·37 cites·3 claims
- 0466US3998396AScalping apparatus for a low profile two-roll crusherCONTINENTAL OIL CO·Filed 1973·Granted Dec 21, 1976·19 cites·5 claims
- 0558US3931936AApparatus for crushing solids in a liquid mediumCONTINENTAL OIL CO·Filed 1974·Granted Jan 13, 1976·14 cites·6 claims
- 0641US4089053AHose and linkage support apparatus for a sump vehicleCONTINENTAL OIL CO·Filed 1977·Granted May 9, 1978·9 cites·9 claims
- 0737US3955593AConveyor for flexible slurry hoseCONTINENTAL OIL CO·Filed 1975·Granted May 11, 1976·8 cites·20 claims
- 0830US4381161ASlurry recovery from a circular sumpCONOCO INC·Filed 1980·Granted Apr 26, 1983·2 cites·6 claims
- 0930US3998395ALow profile sump with submerged transverse roll crusherCONTINENTAL OIL CO·Filed 1974·Granted Dec 21, 1976·3 cites·4 claims
- 1028US4169631ASprocket-type loop carrierCONTINENTAL OIL CO·Filed 1977·Granted Oct 2, 1979·1 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →