Inventor · Romford, GB

David F. James

15Patents
7h-index
6Co-inventors
59Inventor score

Filing activity: Mar 29, 1976 → Jul 5, 2002

Most-cited inventions

PatentTitleAreaCited byStatus
USD276819S Video graphic figure font or the like General 99 Expired
US4306716A Electronic game having light guide array display Emerging Cross-Sectional Technologies 42 Expired
US4890576A Transformable container Performing Operations; Transporting 32 Expired
USD246091S Knob for doors, drawers or the like General 17 Expired
USD243662S Backing plate for door and drawer pulls and the like General 10 Expired
US4322074A Electronic game system Human Necessities 10 Expired
US5456105A Rheometer for determining extensional elasticity Physics 9 Expired
US4182075A Cap-firing arm for a toy figure Human Necessities 7 Expired
USD246093S Handle for doors, drawers or the like General 5 Expired
USD246092S Pull for doors, drawers or the like General 2 Expired
USD246430S Hinge leaf General 2 Expired
US5057213A Apparatus and a system for monitoring impurity in a liquid Chemistry; Metallurgy 2 Expired
US5026993A Apparatus for monitoring settlement of a solid in a liquid, and a system incorporating same Physics 1 Expired
US6711940B2 Method and apparatus for measuring the elasticity of fluids Physics 0 Expired
USD246429S Pendant pull for doors, drawers or the like General 0 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.