Inventor · disambiguated record
Howard L. Ledeen
Also filed as: LEDEEN HOWARD L
8 granted patents·233 citations·filing 1976–1996
88Inventor score
Files withLEDEEN FLOW CONTROL SYSTEMS5CALDON COMPANY1GROVE VALVE & REGULATOR CO1H L LEDEEN ASSOCIATES1
Top patents by PatentIndex Score
8 records- 0190US4540025AThrottling ball valveGROVE VALVE & REGULATOR CO·Filed 1983·Granted Sep 10, 1985·67 cites·4 claims
- 0286US5085401ALow power valve actuatorH L LEDEEN ASSOCIATES·Filed 1990·Granted Feb 4, 1992·79 cites·4 claims
- 0376US5708193ASystem and method for locating release of fluid from a pipelineCALDON COMPANY·Filed 1996·Granted Jan 13, 1998·41 cites·17 claims
- 0461US4051715ALinebreak detection systemLEDEEN FLOW CONTROL SYSTEMS·Filed 1976·Granted Oct 4, 1977·16 cites·11 claims
- 0558US4051676AHydraulic valve actuatorLEDEEN FLOW CONTROL SYSTEMS·Filed 1976·Granted Oct 4, 1977·13 cites·8 claims
- 0642US4109512ALinebreak detection systemLEDEEN FLOW CONTROL SYSTEMS·Filed 1977·Granted Aug 29, 1978·8 cites·5 claims
- 0738US4542814ASystem for precise valve controlLEDEEN FLOW CONTROL SYSTEMS·Filed 1983·Granted Sep 24, 1985·6 cites·8 claims
- 0828US4092877ASelective mode handwheel valve operatorLEDEEN FLOW CONTROL SYSTEMS·Filed 1977·Granted Jun 6, 1978·3 cites·14 claims
Join the waitlist — get patent alerts
Get an alert when Howard L. Ledeen 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 →