Assignee
4D TECHNOLOGY CORP
US·8 granted patents·156 citations·filing 2003–2010
Top patents by PatentIndex Score
8 records- 0192US8351048B2Linear-carrier phase-mask interferometer4D TECHNOLOGY CORP·Filed 2010·Granted Jan 8, 2013·16 cites·8 claims
- 0292US7230717B2Pixelated phase-mask interferometer4D TECHNOLOGY CORP·Filed 2004·Granted Jun 12, 2007·59 cites·27 claims
- 0388US7777895B2Linear-carrier phase-mask interferometer4D TECHNOLOGY CORP·Filed 2007·Granted Aug 17, 2010·20 cites·31 claims
- 0482US7057737B2Common optical-path testing of high-numerical-aperture wavefronts4D TECHNOLOGY CORP·Filed 2003·Granted Jun 6, 2006·27 cites·47 claims
- 0573US7675628B2Synchronous frequency-shift mechanism in Fizeau interferometer4D TECHNOLOGY CORP·Filed 2007·Granted Mar 9, 2010·9 cites·34 claims
- 0672US7230718B2Simultaneous phase-shifting fizeau interferometer4D TECHNOLOGY CORP·Filed 2006·Granted Jun 12, 2007·6 cites·11 claims
- 0768US7079251B2Calibration and error correction in multi-channel imaging4D TECHNOLOGY CORP·Filed 2003·Granted Jul 18, 2006·16 cites·22 claims
- 0861US7580135B2Chromatic compensation in Fizeau interferometer4D TECHNOLOGY CORP·Filed 2007·Granted Aug 25, 2009·3 cites·12 claims
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