Assignee
ISHIZUKA KO
JP·8 granted patents·1 pending application·25 citations·filing 2009–2012
Top patents by PatentIndex Score
9 records- 0189US8759747B2Absolute rotary encoderISHIZUKA KO·Filed 2011·Granted Jun 24, 2014·8 cites·8 claims
- 0283US8860949B2InterferometerISHIZUKA KO·Filed 2011·Granted Oct 14, 2014·5 cites·11 claims
- 0379US8228508B2Origin detection apparatus, displacement measurement apparatus and optical apparatusISHIZUKA KO·Filed 2010·Granted Jul 24, 2012·4 cites·12 claims
- 0478US8742322B2Encoder and interferometer that generate M-phase signals by multiplying N-phase signals by M coefficient sets, where N is not less than 6 and M is not smaller than 2ISHIZUKA KO·Filed 2011·Granted Jun 3, 2014·4 cites·17 claims
- 0562US8785838B2Absolute rotary encoderISHIZUKA KO·Filed 2011·Granted Jul 22, 2014·1 cites·10 claims
- 0661US8243279B2Displacement measurement apparatusISHIZUKA KO·Filed 2009·Granted Aug 14, 2012·3 cites·1 claims
- 0746US8416387B2Wavelength shift measuring apparatus, optical source apparatus, interference measuring apparatus, exposure apparatus, and device manufacturing methodISHIZUKA KO·Filed 2009·Granted Apr 9, 2013·0 cites·11 claims
- 0844US9040900B2Two-dimensional absolute encoder and scale thereforISHIZUKA KO·Filed 2012·Granted May 26, 2015·0 cites·24 claims
- 0940US2012032068A1Absolute encoderISHIZUKA KO·Filed 2011·Application pending·0 cites
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