DC

David W. Caldwell

TT Touchsensor Technologies: 19 patents #1 of 38Top 3%
AL Alsentis: 9 patents #1 of 4Top 25%
DO Donnelly: 6 patents #82 of 274Top 30%
MS Material Handling Systems: 5 patents #4 of 31Top 15%
DT Donnelly Technology: 2 patents #6 of 10Top 60%
General Motors: 2 patents #6,250 of 18,328Top 35%
ST Steelcase: 1 patents #504 of 809Top 65%
📍 Holland, MI: #22 of 1,299 inventorsTop 2%
🗺 Michigan: #862 of 86,293 inventorsTop 1%
Overall (All Time): #50,463 of 4,157,543Top 2%
52
Patents All Time

Issued Patents All Time

Showing 26–50 of 52 patents

Patent #TitleCo-InventorsDate
7906875 Touch switches and practical applications therefor Rick L. Oppor, Anthony V. Gioiosa, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia +3 more 2011-03-15
RE42199 Integrated touch sensor and light apparatus 2011-03-08
7840286 Intelligent shelving system Thomas M. Schreiber, Bahar N. Wadia, Donald Charles Mueller 2010-11-23
7532131 Multi-layer solid state keyboard William D. Schaefer 2009-05-12
7361860 Integrated touch sensor and light apparatus 2008-04-22
7260438 Intelligent shelving system Thomas M. Schreiber 2007-08-21
7242393 Touch sensor with integrated decoration 2007-07-10
7218498 Touch switch with integral control circuit 2007-05-15
7175304 Integrated low profile display Bahar N. Wadia 2007-02-13
7098414 Integrated touch sensor and light apparatus 2006-08-29
7030513 Touch switch with integral control circuit 2006-04-18
6944018 Control system input apparatus and method 2005-09-13
6897390 Molded/integrated touch switch/control panel assembly and method for making same Kevin C. Bird, William D. Schaefer 2005-05-24
6713897 Touch switch with integral control circuit 2004-03-30
6320282 Touch switch with integral control circuit 2001-11-20
6310611 Differential touch sensor and control circuit therefor 2001-10-30
5867111 Touch control system Nicholas W. Medendorp, Jr. 1999-02-02
5594222 Touch sensor and control circuit therefor 1997-01-14
5572205 Touch control system Nicholas W. Medendorp, Jr. 1996-11-05
5289365 Modular network control system Nicholas W. Medendorp, Jr. 1994-02-22
5239152 Touch sensor panel with hidden graphic mode Nicholas W. Medendorp, Jr. 1993-08-24
5189417 Detection circuit for matrix touch pad Nicholas W. Medendorp, Jr. 1993-02-23
5164609 Controllable power distribution system Robert P. Poppe, Nicholas W. Medendorp, Jr. 1992-11-17
5157273 Modular power outlet strip Nicholas W. Medendorp, Jr. 1992-10-20
5153572 Touch-sensitive control circuit Nicholas W. Medendorp, Jr. 1992-10-06