Individual holder
BIFFLE MORRIS S
7 granted patents·640 citations·filing 1977–1986
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
7 records- 0192US4208056ARotating blowout preventor with index kelly drive bushing and stripper rubberBIFFLE MORRIS S·Filed 1979·Granted Jun 17, 1980·97 cites·18 claims
- 0291US4441551AModified rotating head assembly for rotating blowout preventorsBIFFLE MORRIS S·Filed 1981·Granted Apr 10, 1984·110 cites·17 claims
- 0391US4154448ARotating blowout preventor with rigid washpipeBIFFLE MORRIS S·Filed 1977·Granted May 15, 1979·87 cites·17 claims
- 0489US4783084AHead for a rotating blowout preventorBIFFLE MORRIS S·Filed 1986·Granted Nov 8, 1988·99 cites·12 claims
- 0588US4500094AHigh pressure rotary stripperBIFFLE MORRIS S·Filed 1982·Granted Feb 19, 1985·87 cites·18 claims
- 0687US4529210ADrilling media injection for rotating blowout preventorsBIFFLE MORRIS S·Filed 1983·Granted Jul 16, 1985·79 cites·12 claims
- 0787US4367795ARotating blowout preventor with improved seal assemblyBIFFLE MORRIS S·Filed 1980·Granted Jan 11, 1983·81 cites·14 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →