FD

Frank Beard Douglas

TL Trimble Navigation Limited: 12 patents #28 of 671Top 5%
SP Spectra Precision: 3 patents #3 of 23Top 15%
Caterpillar: 2 patents #2,982 of 8,398Top 40%
Overall (All Time): #277,218 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8634991 Grade control for an earthmoving system at higher machine speeds 2014-01-21
7650252 Inclinometer measurement system and method providing correction for movement induced acceleration errors 2010-01-19
7372011 Strobe light and laser beam detection for laser receiver having a comparison of variation in energy levels among photodetectors Francisco Roberto Green 2008-05-13
7262569 Electronic rotor pointing with high angular resolution 2007-08-28
7227121 Receiver circuit with “m” sectors each with “n” channels 2007-06-05
7119316 Strobe light and laser beam detection for laser receiver Francisco Roberto Green 2006-10-10
7064819 Versatile transmitter and receiver for position measurement Philip Detweiler, James Denney, Jonathan A Jackson 2006-06-20
7030361 Receiver circuit with “M” sectors each with “N” channels 2006-04-18
7019278 Laser receiver using multiple arrays of photodetector elements 2006-03-28
6873413 Laser receiver using pin diode photodetector elements 2005-03-29
6870608 Versatile transmitter and receiver for position measurement Philip Detweiler, James Denney, Jonathon A. Jackson 2005-03-22
6762575 Electronic rotor pointing with high angular resolution 2004-07-13
6750953 Position detecting laser receiver 2004-06-15
6643004 Versatile transmitter and receiver for position measurement Philip Detweiler, James Denney, Nathan A. Corey, Jonathan A Jackson 2003-11-04
6384913 Active compensator damping in laser transmitters James N. Hayes 2002-05-07
5867522 Autofocusing system for a laser transmitter Francisco Roberto Green, Philip Detweiler 1999-02-02
5844679 System for adjusting the orientation of a plane of laser light Philip Detweiler, Francisco Roberto Green 1998-12-01