Inventor · Montgomery, AL, US

John D. Marshall

22Patents
5h-index
16Co-inventors
66Inventor score

Filing activity: Nov 9, 1989 → Jan 30, 2015

Most-cited inventions

PatentTitleAreaCited byStatus
US6606281B2 Personal audio player with a removable multi-function module Physics 77 Expired
US5168146A Bi-directional snap-action register display mechanism Physics 35 Expired
US7526348B1 Computer based automatic audio mixer Electricity 14 Expired
US7904614B1 Direct memory access controller with multiple transaction functionality Physics 11 Active
US7418642B2 Built-in-self-test using embedded memory and processor in an application specific integrated circuit Physics 11 Expired
US7890828B2 Built-in self-test using embedded memory and processor in an application specific integrated circuit Physics 5 Active
US7228189B1 Synchronized streamed playback and recording for personal computers Physics 5 Expired
US8566660B2 Built-in-self-test using embedded memory and processor in an application specific integrated circuit Physics 3 Active
US8046652B2 Built-in self-test using embedded memory and processor in an application specific integrated circuit Physics 2 Active
US8321731B2 Built-in-self-test using embedded memory and processor in an application specific integrated circuit Physics 2 Active
US8947734B1 Pulse width modulator for a printing device Physics 2 Active
US7280246B2 Laser print apparatus that generates pulse width value and justification value based on pixels in a multi-bit image Performing Operations; Transporting 1 Expired
US7609409B2 Laser print apparatus that generates pulse width value and justification value based on pixels in a multi-bit image Performing Operations; Transporting 1 Active
US7359082B2 Independent video hardware blocks to support laser printers Electricity 1 Expired
US8045212B2 Laser print apparatus that generates pulse with value and justification value based on pixels in a multi-bit image Performing Operations; Transporting 0 Active
US9542716B1 Non raster row pixel processing Physics 0 Active
US8443121B1 Common block interface for data and protocol with handshake Physics 0 Active
US8643661B1 Non raster row pixel processing Physics 0 Active
US8874983B2 Built-in-self-test using embedded memory and processor in an application specific intergrated circuit Physics 0 Active
US8762596B2 Direct memory access controller with multiple transaction functionality Physics 0 Active
US8161207B1 Common block interface for data and control with handshake protocol Physics 0 Active
US9361556B1 Pulse width modulator for a printing device Physics 0 Active

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