Inventor · disambiguated record
William E. Showalter
Also filed as: SHOWALTER WILLIAM E
9 granted patents·604 citations·filing 1975–1990
91Inventor score
Files withUNION OIL CO9
Top patents by PatentIndex Score
9 records- 0197US5126037AGeopreater heating method and apparatusUNION OIL CO·Filed 1990·Granted Jun 30, 1992·409 cites·15 claims
- 0288US4755469AOil tracing methodUNION OIL CO·Filed 1982·Granted Jul 5, 1988·65 cites·25 claims
- 0378US4105253AProcess for recovery of mineral values from underground formationsUNION OIL CO·Filed 1977·Granted Aug 8, 1978·42 cites·25 claims
- 0472US4358158ASolution mining processUNION OIL CO·Filed 1978·Granted Nov 9, 1982·33 cites·19 claims
- 0548US5040605AOil recovery method and apparatusUNION OIL CO·Filed 1990·Granted Aug 20, 1991·22 cites·22 claims
- 0646US4358157ASolution mining processUNION OIL CO·Filed 1978·Granted Nov 9, 1982·6 cites·17 claims
- 0741US4586752ASolution mining processUNION OIL CO·Filed 1979·Granted May 6, 1986·10 cites·25 claims
- 0839US3995780APressure-responsive valve mechanismUNION OIL CO·Filed 1975·Granted Dec 7, 1976·7 cites·8 claims
- 0938US5025862ASteam injection pipingUNION OIL CO·Filed 1989·Granted Jun 25, 1991·10 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →