JD

James J. Duckworth

TL The Singer Company Limited: 4 patents #66 of 510Top 15%
OE Otis Elevator: 1 patents #966 of 1,840Top 55%
UA United Kingdom Atomic Energy Authority: 1 patents #117 of 350Top 35%
📍 Rockaway, NJ: #46 of 252 inventorsTop 20%
🗺 New Jersey: #14,190 of 69,400 inventorsTop 25%
Overall (All Time): #896,255 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
4544873 Elevator polyphase motor control Jalal T. Salihi 1985-10-01
4486845 Resolver to incremental shaft encoder converter 1984-12-04
4362485 Apparatus for continuous extrusion Harold K. Slater 1982-12-07
4308525 Dual speed resolver to digital converter with improved course-fine interlock David J. Simon 1981-12-29
4270074 Brushless DC motor control utilizing a ROM William J. Glennon 1981-05-26
4254369 High accuracy shaft angle linear DC voltage conversion using low accuracy devices David J. Simon 1981-03-03