PH

Philip J. Hopkinson

SD Square D: 8 patents #39 of 756Top 6%
GE: 2 patents #13,562 of 36,430Top 40%
CS Cooper Power Systems: 1 patents #25 of 71Top 40%
CT Cooper Technologies: 1 patents #306 of 757Top 45%
Overall (All Time): #427,066 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6806803 Transformer winding Dilip R. Purohit, Gary D. King 2004-10-19
6633168 Method and apparatus for detecting partial discharge in a voltage transformer Vadim Raff 2003-10-14
6278355 Transformer winding Dilip R. Purohit, Gary D. King 2001-08-21
6188298 Winding transient suppression technique David L. Swindler 2001-02-13
6177848 High frequency snubber for transformers Richard R. Rettew 2001-01-23
6157282 Transformer cooling method and apparatus therefor 2000-12-05
6147580 Strip wound induction coil with improved heat transfer and short circuit withstandability Richard R. Rettew, Scott F. Lett 2000-11-14
6100783 Energy efficient hybrid core Wesley W. Schwartz 2000-08-08
5225630 Transformer assembly having cooling fins and method of providing same Kenneth R. Beck 1993-07-06
4987511 Gapped arrester George W. Mayall 1991-01-22
4521954 Method for making a dry type transformer Leo C. Rademaker, Gordon M. Bell, Noah D. Hay 1985-06-11
4521956 Method for making a transformer having improved space factor Gordon M. Bell 1985-06-11