Inventor · disambiguated record
Donald E. Koopman
Also filed as: KOOPMAN DONALD E
6 granted patents·136 citations·filing 1975–1985
85Inventor score
Top patents by PatentIndex Score
6 records- 0181US4433637AMicroencapsulated cholesteric liquid crystal temperature measuring device for determining the temperature of non-planar or planar surfacesVECTRA INTERNATIONAL CORP·Filed 1981·Granted Feb 28, 1984·43 cites·17 claims
- 0280US4301054AThermographic cholesteric coating compositionsTHERMAL IMAGERY INC·Filed 1979·Granted Nov 17, 1981·38 cites·15 claims
- 0366US4501503AThermographic cholesteric coating compositions and platesVECTRA INTERNATIONAL CORP·Filed 1983·Granted Feb 26, 1985·24 cites·18 claims
- 0461US4441508AThermographic cholesteric coating compositions and platesVECTRA INTERNATIONAL CORP·Filed 1981·Granted Apr 10, 1984·20 cites·18 claims
- 0550US4676617ACamera system and power supplyMED TECH PROD INC·Filed 1985·Granted Jun 30, 1987·7 cites·11 claims
- 0629US3998860ASolidification retardation of liquid crystalline compositions with steroid derivatives of isostearyl carbonateDJINNII IND INC·Filed 1975·Granted Dec 21, 1976·4 cites·12 claims
Join the waitlist — get patent alerts
Get an alert when Donald E. Koopman 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 →