Inventor · disambiguated record
Douglas E. Longman
Also filed as: LONGMAN DOUGLAS E
2 granted patents·128 citations·filing 1991–1995
69Inventor score
Files withCATERPILLAR INC2
Top patents by PatentIndex Score
2 records- 0192US5181494AHydraulically-actuated electronically-controlled unit injector having stroke-controlled piston and methods of operationCATERPILLAR INC·Filed 1991·Granted Jan 26, 1993·79 cites·23 claims
- 0283US5697341AFill metered hydraulically actuated fuel injection system and method of fuel injectionCATERPILLAR INC·Filed 1995·Granted Dec 16, 1997·49 cites·22 claims
Join the waitlist — get patent alerts
Get an alert when Douglas E. Longman 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 →