DC

David C. Chu

HP HP: 13 patents #189 of 7,018Top 3%
AT Agilent Technologies: 9 patents #188 of 3,411Top 6%
Overall (All Time): #185,046 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9430996 Non-fourier spectral analysis for editing and visual display of music 2016-08-30
7869662 System architecture for sensing an absolute position using a target pattern Janet Yun, Matthew Dominic Tenuta, Raymond Yeung, Nhan T. Nguyen 2011-01-11
7489409 System for sensing an absolute position in two dimensions using a target pattern Evan Whitney 2009-02-10
7436519 System and method for interferometer non-linearity compensation Lee Kalem, William Clay Schluchter 2008-10-14
7230727 System for sensing an absolute position in two dimensions using a target pattern Evan Whitney 2007-06-12
7130056 System and method of using a side-mounted interferometer to acquire position information William Clay Schluchter, Louis F. Mueller, Douglas P. Woolverton, Jeffrey Young, Alan B. Ray 2006-10-31
6952175 Phase digitizer for signals in imperfect quadrature Carol Courville, Lee Kalem 2005-10-04
6792368 System and method for heterodyne interferometer high velocity type non-linearity compensation 2004-09-14
6738143 System and method for interferometer non-linearity compensation 2004-05-18
6480126 Phase digitizer 2002-11-12
5982831 Feed forward method and apparatus for generating a clock signal 1999-11-09
5663666 Digital phase detector Jeremy Sommer 1997-09-02
5631933 Phase-locked digital synthesizers Jeremy Sommer 1997-05-20
5519625 System for characterizing phase-modulated signals using a time interval analyzer 1996-05-21
5469466 System for highly repeatable clock parameter recovery from data modulated signals 1995-11-21
5384541 Precision timed delay measurement using phaselocked CW technique Alistair Black 1995-01-24
5166959 Picosecond event timer Thomas A. Knotts 1992-11-24
5128607 Constant events frequency measurement and fast inverse circuit David W. Clark, Alan Davis, Keith M. Ferguson 1992-07-07
4996474 Digital gate generation for a signal measurement instrument Atul A. Tambe, Lee D. Cosart, III 1991-02-26
4627268 Method for calibrating instruments for time interval measurements 1986-12-09
4613951 Time interval measuring apparatus and method 1986-09-23
4519091 Data capture in an uninterrupted counter Michael J. Ward 1985-05-21
4383166 Automatic echo-chamber for measuring single time intervals by replication and averaging Robert W. Offermann 1983-05-10