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%
Overall (All Time): #50,463 of 4,157,543Top 2%
52
Patents All Time

Issued Patents All Time

Showing 25 most recent of 52 patents

Patent #TitleCo-InventorsDate
12429985 Simultaneous time domain differential sensing and electric field sensing 2025-09-30
11730910 Simultaneous time domain differential sensing and electric field sensing 2023-08-22
11592942 Simultaneous time domain differential sensing and electric field sensing 2023-02-28
11592943 Simultaneous time domain differential sensing and electric field sensing 2023-02-28
11578386 Metal refinement 2023-02-14
11561652 Simultaneous time domain differential sensing and electric field sensing 2023-01-24
11524403 Vacuum-based end effector for engaging parcels Josiah Douglas, Kurt Michael Wittmer, Michael Alan McCue, Gregory Robert Sturm, Derek Robert Sturm +1 more 2022-12-13
11319613 Metal refinement 2022-05-03
11241802 Dual-material vacuum cup for a vacuum-based end effector Josiah Douglas, Derek Robert Sturm 2022-02-08
11192145 Singulating system for parcels Gregory Robert Sturm, Jonathan Dean Terrell, Thomas A. Hillerich, Michael Alan McCue, Derek Robert Sturm 2021-12-07
10994309 System and method for identifying and transferring parcels from a first conveyor to a second conveyor Thomas A. Hillerich, Michael Alan McCue, Gregory Robert Sturm, Derek Robert Sturm 2021-05-04
10646898 System and method for identifying and transferring parcels from a first conveyor to a second conveyor Thomas A. Hillerich, Michael Alan McCue, Gregory Robert Sturm, Derek Robert Sturm 2020-05-12
10248264 Apparatus and method for determining a stimulus, including a touch input and a stylus input William D. Schaefer, Robert G. Bos, Stefan G. Kurek 2019-04-02
10185439 Time domain differential techniques to characterize various stimuli Robert G. Bos, Stefan G. Kurek 2019-01-22
9851834 Time domain differential techniques to characterize various stimuli Robert G. Bos, Stefan G. Kurek 2017-12-26
9437786 Light emitting device for illuminating plants Jeffrey L. Mastin, Daniel J. Fisher, Jamie C. Caldwell, William D. Schaefer, Justin T. Teitt 2016-09-06
9306561 Touch switches and practical applications therefor Rick L. Oppor, Anthony V. Gioiosa, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia +3 more 2016-04-05
9182098 Device for scattering light Justin T. Teitt 2015-11-10
9184350 Light emitting device for illuminating plants Jeffrey L. Mastin, William D. Schaefer, Daniel J. Fisher, Jamie C. Caldwell, Justin T. Teitt 2015-11-10
9041286 Volumetric light emitting device Daniel J. Fisher, Justin T. Teitt, Jamie C. Caldwell, William D. Schaefer 2015-05-26
8866497 Apparatus and method for determining a touch input William D. Schaefer 2014-10-21
8831175 Hybrid X-ray optic apparatus and methods Eric H. Silver, Gerald Austin, Ting-Kuan Lin 2014-09-09
8307549 Method of making an electrical circuit Michael J. Taylor, Michael Marshall 2012-11-13
8227940 Touch switches and practical applications therefor Rick L. Oppor, Anthony V. Gioiosa, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia +3 more 2012-07-24
8135482 Intelligent shelving system Thomas M. Schreiber, Bahar N. Wadia, Donald Charles Mueller 2012-03-13