Inventor · disambiguated record
Phillip H. Manderscheid
Also filed as: MANDERSCHEID PHILLIP H
8 granted patents·359 citations·filing 1975–1990
90Inventor score
Technology areasE21B
Top patents by PatentIndex Score
8 records- 0189US4375240AWell packerHUGHES TOOL CO·Filed 1980·Granted Mar 1, 1983·93 cites·9 claims
- 0283US4059150AAnchoring assemblyBROWN OIL TOOLS·Filed 1976·Granted Nov 22, 1977·56 cites·34 claims
- 0376US5046557AWell packing toolMASX ENERGY SERVICES GROUP INC·Filed 1990·Granted Sep 10, 1991·68 cites·32 claims
- 0476US4018272AWell packer apparatusBROWN OIL TOOLS·Filed 1975·Granted Apr 19, 1977·42 cites·22 claims
- 0571US4399870AAnnulus operated test valveHUGHES TOOL CO·Filed 1981·Granted Aug 23, 1983·38 cites·10 claims
- 0664US4523641ALiner hanger with channel guidesHUGHES TOOL CO·Filed 1984·Granted Jun 18, 1985·30 cites·5 claims
- 0758US4548264AHigh temperature well packerHUGHES TOOL CO·Filed 1984·Granted Oct 22, 1985·25 cites·3 claims
- 0834US4320803AValve retrieval mechanism for an inflatable packer systemBJ HUGHES INC·Filed 1980·Granted Mar 23, 1982·7 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →