Inventor
Donald E. Koopman
Inventor
Miami Township, OH, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C09Dprimary
C09DCoating compositions, e.g. paints, varnishes or lacquers20%
G01KMeasuring temperature20%
Y10TTechnical subjects covered by former us classification20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
C09KMaterials for miscellaneous applications, not provided for elsewhere10%
A61BDiagnosis5%
C07JSteroids5%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them5%
PatentTitleYear
4,676,617'Camera system and power supply'19874,501,503'Thermographic cholesteric coating compositions and plates'19854,441,508'Thermographic cholesteric coating compositions and plates'19844,433,637'Microencapsulated cholesteric liquid crystal temperature measuring device for determining the temperature of non-planar or planar surfaces'19844,301,054'Thermographic cholesteric coating compositions'19813,998,860'Solidification retardation of liquid crystalline compositions with steroid derivatives of isostearyl carbonate'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to DJINNII IND INC (1)· patent assignee history
1976–1985Based in Miami Township, OH, US· patent location history
1981Patents assigned to THERMAL IMAGERY INC (1)· patent assignee history
1984–1985Patents assigned to VECTRA INTERNATIONAL CORP (3)· patent assignee history
1987Patents assigned to MED TECH PROD INC (1)· patent assignee history
1987Based in Dayton, OH, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| VECTRA INTERNATIONAL CORP | 3 | 1984–1985 |
| DJINNII IND INC | 1 | 1976 |
| MED TECH PROD INC | 1 | 1987 |
| THERMAL IMAGERY INC | 1 | 1981 |
Locations
| Location | Patents | Span |
|---|---|---|
| Miami Township, OH, US | 5 | 1976–1985 |
| Dayton, OH, US | 1 | 1987 |