DC

David Cheng

Applied Materials: 19 patents #694 of 7,310Top 10%
UN Unknown: 11 patents #718 of 83,584Top 1%
Xerox: 3 patents #3,111 of 8,622Top 40%
CA Crossing Automation: 1 patents #6 of 10Top 60%
CM Curators Of The University Of Missouri: 1 patents #512 of 1,157Top 45%
Overall (All Time): #51,236 of 4,157,543Top 2%
52
Patents All Time

Issued Patents All Time

Showing 25 most recent of 52 patents

Patent #TitleCo-InventorsDate
7748944 Method and apparatus for semiconductor processing JB Price, Jed Keller, Laurence Dulmage 2010-07-06
7140359 Spark plug capable of removing remaining electric charges 2006-11-28
6917358 Resistance inducting wire layout on a touch panel 2005-07-12
6788079 Indexing multiple test probe system and method 2004-09-07
6653853 Multiple test probe system and method 2003-11-25
6454519 Dual cassette load lock Masato Toshima, Phil Salzman, Steven Murdoch, Cheng Wang, Mark A. Stenholm +2 more 2002-09-24
6366103 Multiple test probe system 2002-04-02
6280581 Method and apparatus for electroplating films on semiconductor wafers 2001-08-28
6249342 Method and apparatus for handling and testing wafers 2001-06-19
6164894 Method and apparatus for integrated wafer handling and testing 2000-12-26
6154041 Method and apparatus for measuring thickness of semiconductor substrates 2000-11-28
6053688 Method and apparatus for loading and unloading wafers from a wafer carrier 2000-04-25
5917191 Apparatus for measuring surface topography 1999-06-29
5914611 Method and apparatus for measuring sheet resistance and thickness of thin films and substrates 1999-06-22
5882165 Multiple chamber integrated process system Dan Maydan, Sasson Somekh, David N. Wang, Masato Toshima, Isaac Harari +1 more 1999-03-16
5851299 Passive shield for CVD wafer processing which provides frontside edge exclusion and prevents backside depositions Mei Chang 1998-12-22
5769588 Dual cassette load lock Masato Toshima, Phil Salzman, Steven Murdoch, Cheng Wang, Mark A. Stenholm +2 more 1998-06-23
5708279 Method and apparatus for measuring surface topography 1998-01-13
5696383 Method and apparatus for measuring the curvature of wafers with beams of different wavelengths 1997-12-09
5691648 Method and apparatus for measuring sheet resistance and thickness of thin films and substrates 1997-11-25
5670888 Method for transporting and testing wafers 1997-09-23
5546179 Method and apparatus for mapping the edge and other characteristics of a workpiece 1996-08-13
5532499 Beam spot position detector having a detector moving mechanism 1996-07-02
5523582 Method and apparatus for measuring the curvature of wafers with a laser source selecting device 1996-06-04
5495178 Method and apparatus for measuring film thickness 1996-02-27