Hopkinson; Philip J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hopkinson; Philip J..The latest application filed is for "non-energy limiting class 2 transformer with positive temperature protection".
- Hopkinson; Philip J. - Charlotte NC
- Hopkinson; Philip J. - Fort Wayne IN
| Patent | Date |
|---|---|
| Transformer winding Grant 6,806,803 - Hopkinson , et al. October 19, 2 | 2004-10-19 |
| Method and apparatus for detecting partial discharge in a voltage transformer Grant 6,633,168 - Hopkinson , et al. October 14, 2 | 2003-10-14 |
| Non-energy limiting class 2 transformer with positive temperature protection App 20020196120 - Hopkinson, Philip J. ; et al. | 2002-12-26 |
| Method and apparatus for detecting partial discharge in a voltage transformer App 20020140536 - Hopkinson, Philip J. ; et al. | 2002-10-03 |
| Transformer cooling method and apparatus therefor Grant 6,157,282 - Hopkinson December 5, 2 | 2000-12-05 |
| Energy efficient hybrid core Grant 6,100,783 - Hopkinson , et al. August 8, 2 | 2000-08-08 |
| Method for making a dry type transformer Grant 4,521,954 - Rademaker , et al. June 11, 1 | 1985-06-11 |
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