Inventor · Toronto, ON, CA

Christopher H. Birch

14Patents
10h-index
29Co-inventors
72Inventor score

Filing activity: Oct 11, 1988 → Aug 26, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US5757416A System and method for transmitting a plurality of digital services including imaging services Electricity 311 Expired
US5493339A System and method for transmitting a plurality of digital services including compressed imaging services and associated ancillary data services Electricity 145 Expired
US5583562A System and method for transmitting a plurality of digital services including imaging services Electricity 137 Expired
US5502499A Synchronizing waveform generator Electricity 89 Expired
US6052384A Using a receiver model to multiplex variable-rate bit streams having timing constraints Electricity 77 Expired
US5923755A Multi-service data receiver architecture Electricity 70 Expired
US4941045A Method and apparatus for improving vertical definition of a television signal by scan conversion Emerging Cross-Sectional Technologies 63 Expired
US6516002B1 Apparatus for using a receiver model to multiplex variable-rate bit streams having timing constraints Electricity 54 Expired
US7009997B2 Using a receiver model to multiplex variable-rate bit streams having timing constraints Electricity 17 Expired
US6570888B1 Using a receiver model to multiplex variable-rate bit streams having timing constraints Electricity 11 Expired
US6438139B1 Method and apparatus for using a receiver model to multiplex variable-rate bit streams having timing constraints Electricity 9 Expired
US6546013B1 Method and apparatus for delivering reference signal information within a specified time interval Electricity 8 Expired
US11465145B2 Method and system for sample collection, storage, preparation and detection Physics 1 Active
US11135583B2 Devices and methods for extraction, separation and thermocycling Physics 0 Active

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