Assignee
SHAFFER ROBERT W
US·6 granted patents·1 pending application·143 citations·filing 2004–2015
Top patents by PatentIndex Score
7 records- 0197US9885358B2Three stage scroll vacuum pumpSHAFFER ROBERT W·Filed 2015·Granted Feb 6, 2018·19 cites·10 claims
- 0297US9784139B2Compact energy cycle construction utilizing some combination of a scroll type expander, pump, and compressor for operating according to a rankine, an organic rankine, heat pump, or combined organic rankine and heat pump cycleSHAFFER ROBERT W·Filed 2015·Granted Oct 10, 2017·19 cites·12 claims
- 0397US9074598B2Scroll type device including compressor and expander functions in a single scroll plate pairSHAFFER ROBERT W·Filed 2012·Granted Jul 7, 2015·34 cites·8 claims
- 0497US9028230B2Three stage scroll vacuum pumpSHAFFER ROBERT W·Filed 2013·Granted May 12, 2015·34 cites·2 claims
- 0597US8523544B2Three stage scroll vacuum pumpSHAFFER ROBERT W·Filed 2011·Granted Sep 3, 2013·20 cites·12 claims
- 0696US8668479B2Semi-hermetic scroll compressors, vacuum pumps, and expandersSHAFFER ROBERT W·Filed 2010·Granted Mar 11, 2014·17 cites·7 claims
- 0740US2006099096A1Scroll pump systemSHAFFER ROBERT W·Filed 2004·Application pending·0 cites
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