William D. Schaefer has been granted 7 US patents while listed as an inventor at Alsentis . The first was granted in 2005 and the most recent in April 2019. William D. Schaefer ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list William D. Schaefer in Holland, MI, US.
Patents per Year Patents granted per year, 2005 to 2019 Bar chart with a peak of 2 patents in 2015. peak 2 2005: 1 patents 2005 2009: 1 patents 2009 2014: 1 patents 2014 2015: 2 patents 2015 2016: 1 patents 2016 2019: 1 patents 2019
Issued Patents All Time
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Showing 1–7 of 7 patents
Patent # Title Co-Inventors Date
10248264 Apparatus and method for determining a stimulus, including a touch input and a stylus input David W. Caldwell , Robert G. Bos , Stefan G. Kurek 2019-04-02
9437786 Light emitting device for illuminating plants Jeffrey L. Mastin , Daniel J. Fisher , Jamie C. Caldwell , David W. Caldwell , Justin T. Teitt 2016-09-06
9184350 Light emitting device for illuminating plants Jeffrey L. Mastin , Daniel J. Fisher , Jamie C. Caldwell , David W. Caldwell , Justin T. Teitt 2015-11-10
9041286 Volumetric light emitting device Daniel J. Fisher , David W. Caldwell , Justin T. Teitt , Jamie C. Caldwell 2015-05-26
8866497 Apparatus and method for determining a touch input David W. Caldwell 2014-10-21
7532131 Multi-layer solid state keyboard David W. Caldwell 2009-05-12
6897390 Molded/integrated touch switch/control panel assembly and method for making same David W. Caldwell , Kevin C. Bird 2005-05-24