DJ

David F. Johnston

BG Bha Group: 9 patents #3 of 58Top 6%
VT Voice Signal Technologies: 7 patents #3 of 20Top 15%
GE: 7 patents #4,929 of 36,430Top 15%
BG Babcock & Wilcox Power Generation Group: 3 patents #7 of 136Top 6%
NASA: 3 patents #448 of 3,881Top 15%
📍 Riyadh, VA: #1 of 1 inventorsTop 100%
Overall (All Time): #89,822 of 4,157,543Top 3%
37
Patents All Time

Issued Patents All Time

Showing 26–37 of 37 patents

Patent #TitleCo-InventorsDate
5705923 Variable inductance current limiting reactor control system for electrostatic precipitator Michael Mahler, Timothy Gerald Lawrence 1998-01-06
5515262 Variable inductance current limiting reactor Peter Thomas Bircsak 1996-05-07
5374809 Induction heating coupler and annealer Robert L. Fox, Samuel D. Johnson, Carl E. Copeland, JR., Robert H. Coultrip, W. Morris Phillips +2 more 1994-12-20
5173867 Multiple rapper control for electrostatic precipitator Michael Mahler, Verne J. Pickren 1992-12-22
5068811 Electrical control system for electrostatic precipitator Terry Lewis Farmer 1991-11-26
4891591 Nonintrusive method and apparatus for monitoring the cure of polymeric materials Robert L. Fox 1990-01-02
4860149 Electronic precipitator control 1989-08-22
4605424 Method and apparatus for controlling power to an electronic precipitator 1986-08-12
4521659 Induction heating gun John D. Buckley, Robert J. Swaim, Robert L. Fox 1985-06-04
4483073 Hi jump step saver standard 1984-11-20
4470595 Hi-jack 1984-09-11
4468024 Vaulting pole end plug 1984-08-28