DS

David J. Spring

WL Wilkinson Sword Limited: 7 patents #5 of 52Top 10%
GL Graviner Limited: 3 patents #3 of 13Top 25%
KL Kidde Graviner Limited: 1 patents #10 of 21Top 50%
Overall (All Time): #348,384 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
D807436 Game board Jana Spring 2018-01-09
5464980 Flame sensors and methods of sensing flame John D. King 1995-11-07
5150577 System and method for recovering and purifying a halocarbon composition Mark D. Mitchell 1992-09-29
4722766 Extinguishing of fires and explosions 1988-02-02
4719857 Pyrotechnic device 1988-01-19
4713101 Cooling apparatus 1987-12-15
4694172 Detection of fires and explosions Brian Powell 1987-09-15
4318900 Alicyclic amides having a physiological cooling effect David G. Rowsell, Roger Hems 1982-03-09
4296255 Acyclic carboxamides having a physiological cooling effect David G. Roswell, Roger Hems 1981-10-20
4248859 Alicyclic amides having a physiological cooling effect David G. Rowsell, Roger Hems 1981-02-03
4230688 Acyclic carboxamides having a physiological cooling effect David G. Rowsell, Roger Hems 1980-10-28
4226988 N-substituted paramenthane carboxamides Hugh R. Watson, David G. Rowsell 1980-10-07
4193936 N-substituted paramenthane carboxamides Hugh R. Watson, David G. Rowsell 1980-03-18
4190643 Compositions having a physiological cooling effect Hugh R. Watson, David G. Rowsell 1980-02-26