WD

William Duff

SI Solar Enterprises International: 1 patents #3 of 6Top 50%
📍 Fort Collins, CO: #606 of 3,421 inventorsTop 20%
🗺 Colorado: #5,842 of 40,980 inventorsTop 15%
Overall (All Time): #658,097 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
7521900 Method and assembly for insulating polarized device 2009-04-21
7289312 Electrical charges storage device having enhanced power characteristics 2007-10-30
7245110 System for using polarized device with an AC induction motor 2007-07-17
6900617 Method and circuit for using polarized device in AC applications 2005-05-31
6633154 Method and circuit for using polarized device in AC applications 2003-10-14
6548988 Method and circuit for using polarized device in AC applications 2003-04-15
6548989 Method and circuit for using polarized device in AC applications 2003-04-15
5537991 Nonimaging solar collector Roland Winston, Joseph O'Gallagher, David G. Jenkins 1996-07-23