Assignee
SHAFER DAVID
US·9 granted patents·1 pending application·80 citations·filing 2007–2012
Top patents by PatentIndex Score
10 records- 0196US8122798B1Power cutting tool with proximity sensing systemSHAFER DAVID·Filed 2009·Granted Feb 28, 2012·61 cites·5 claims
- 0291US8208199B2Catadioptric projection objectiveSHAFER DAVID·Filed 2009·Granted Jun 26, 2012·7 cites·20 claims
- 0390US8208198B2Catadioptric projection objectiveSHAFER DAVID·Filed 2007·Granted Jun 26, 2012·8 cites·4 claims
- 0479US8289619B2Catadioptric projection objectiveSHAFER DAVID·Filed 2011·Granted Oct 16, 2012·2 cites·27 claims
- 0574US8804234B2Catadioptric projection objective including an aspherized plateSHAFER DAVID·Filed 2012·Granted Aug 12, 2014·1 cites·24 claims
- 0663US8730572B2Catadioptric projection objectiveSHAFER DAVID·Filed 2012·Granted May 20, 2014·0 cites·26 claims
- 0762US8199400B2Catadioptric projection objectiveSHAFER DAVID·Filed 2009·Granted Jun 12, 2012·1 cites·1 claims
- 0858US2012274919A1Catadioptric projection objectiveSHAFER DAVID·Filed 2012·Application pending·0 cites
- 0956US8339701B2Catadioptric projection objectiveSHAFER DAVID·Filed 2010·Granted Dec 25, 2012·0 cites·21 claims
- 1054US8416490B2Catadioptric projection objectiveSHAFER DAVID·Filed 2010·Granted Apr 9, 2013·0 cites·13 claims
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