Inventor
GROFF STEVEN MARK
US9 patents
⚠️ This page may combine multiple inventors who share the name “GROFF STEVEN MARK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IBM
7 patentsUS7868484B2Jan 11, 2011
Worldwide adaptive multi-coil automatic transfer switch
IBM15 citations82
US7763993B2Jul 27, 2010
DC UPS with auto-ranging backup voltage capability
IBM10 citations82
US8022579B2Sep 20, 2011
Brownout solution for electromechanical automatic transfer switch
IBM3 citations61
US7898106B2Mar 1, 2011
DC UPS configured as intrinsic power transfer switch
IBM2 citations61
US7847435B2Dec 7, 2010
Intrinsically balanced direct current uninterruptible power supply
IBM2 citations61
US7962776B2Jun 14, 2011
Method and apparatus for detecting component removal while operating in a battery backup mode
IBM5 citations58
US8039990B2Oct 18, 2011
DC UPS configured as intrinsic power transfer switch
IBM0 citations50