Inventor
Herbert E. Pietsch
Inventor
Monroeville, PA, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Sprimary
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests22%
G01RMeasuring electric variables11%
H01BCables11%
H01CResistors11%
H02KDynamo-electric machines11%
H05BElectric heating11%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications11%
Y10TTechnical subjects covered by former us classification11%
PatentTitleYear
4,873,471'High frequency ballast for gaseous discharge lamps'19894,297,250'Method of producing homogeneous ZnO non-linear powder compositions'19814,207,482'Multilayered high voltage grading system for electrical conductors'19804,156,846'Detection of arcing faults in generator windings'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979–1981Patents assigned to WESTINGHOUSE ELECTRIC CORP (3)· patent assignee history
1979–1980Based in Monroeville, PA, US· patent location history
1981Based in Mukwonago, WI, US· patent location history
1989Patents assigned to THOMAS INDUSTRIES INC (1)· patent assignee history
1989Based in Cookeville, TN, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| WESTINGHOUSE ELECTRIC CORP | 3 | 1979–1981 |
| THOMAS INDUSTRIES INC | 1 | 1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Monroeville, Pennsylvania, US | 2 | 1979–1980 |
| Cookeville, TN, US | 1 | 1989 |
| Mukwonago, WI, US | 1 | 1981 |