Inventor · disambiguated record
Elwood K. Pierce, Jr.
Also filed as: PIERCE ELWOOD K · PIERCE ELWOOD K JR · PIERCE JR ELWOOD K
5 granted patents·390 citations·filing 1977–1982
86Inventor score
Top patents by PatentIndex Score
5 records- 0194US4410186ASealing system for pressurized flanged jointsPETROLEUM DESIGNERS INC·Filed 1982·Granted Oct 18, 1983·126 cites·21 claims
- 0293US4230299APressure balanced gate valve having selective actuator systemsPETROLEUM DESIGNERS INC·Filed 1978·Granted Oct 28, 1980·147 cites·26 claims
- 0382US4179099AExpanding gate valvePETROLEUM DESIGNERS INC·Filed 1978·Granted Dec 18, 1979·37 cites·16 claims
- 0479US4138144AWellhead sealing assemblyNL INDUSTRIES INC·Filed 1977·Granted Feb 6, 1979·49 cites·9 claims
- 0567US4295665AWell casing suspension systemPETROLEUM DESIGNERS INC·Filed 1979·Granted Oct 20, 1981·31 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →