Inventor · Wellingborough, GB

Derek Roskell

9Patents
8h-index
14Co-inventors
62Inventor score

Filing activity: Aug 26, 1981 → Mar 15, 1996

Most-cited inventions

PatentTitleAreaCited byStatus
US4860290A Logic circuit having individually testable logic modules Physics 97 Expired
US5446651A Split multiply operation Physics 94 Expired
US5173904A Logic circuits systems, and methods having individually testable logic modules Physics 40 Expired
US5140687A Data processing apparatus with self-emulation capability Physics 35 Expired
US4532587A Single chip processor connected to an external memory chip Physics 33 Expired
US5249266A Data processing apparatus with self-emulation capability Physics 26 Expired
US5668482A Bus maintenance circuit Electricity 9 Expired
US4544851A Synchronizer circuit with dual input Electricity 9 Expired
US4858167A Parallel binary adder having grouped stages including dynamic logic to increase carry propagation speed Physics 2 Expired

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