Inventor · disambiguated record
Philip L. Cowan
Also filed as: COWAN PHILIP L
5 granted patents·69 citations·filing 1987–1990
79Inventor score
Top patents by PatentIndex Score
5 records- 0166US4723892AConstant power variable volume pumpCOWAN PHILIP L·Filed 1987·Granted Feb 9, 1988·25 cites·15 claims
- 0265US5031509AAnti-leak seal for pump motorTITAN TOOL INC·Filed 1989·Granted Jul 16, 1991·23 cites·17 claims
- 0346US5051074ABi-directional reciprocating pump mechanismCOWAN PHILIP L·Filed 1990·Granted Sep 24, 1991·15 cites·19 claims
- 0432US4870890AAutomatic reversing valveCOWAN PHILIP L·Filed 1988·Granted Oct 3, 1989·6 cites·27 claims
- 0525US5090437ALow friction proportional unloading valveCOWAN PHILIP L·Filed 1990·Granted Feb 25, 1992·0 cites·13 claims
Join the waitlist — get patent alerts
Get an alert when Philip L. Cowan files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →