Inventor · Cupertino, CA, US

Stephan V. Schell

88Patents
26h-index
42Co-inventors
88Inventor score

Filing activity: May 22, 1990 → Mar 22, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US5260968A Method and apparatus for multiplexing communications signals through blind adaptive spatial filtering Electricity 183 Expired
US8782775B2 Embedded authentication systems in an electronic device Electricity 127 Active
US8788838B1 Embedded authentication systems in an electronic device Electricity 104 Active
US8943580B2 Embedded authentication systems in an electronic device Electricity 103 Active
US5299148A Self-coherence restoring signal extraction and estimation of signal direction of arrival Electricity 85 Expired
US9329771B2 Embedded authentication systems in an electronic device Electricity 82 Active
US9250795B2 Embedded authentication systems in an electronic device Electricity 79 Active
US6751265B1 Method and system of amplitude modulation using dual/split channel unequal amplification Electricity 76 Expired
US9038167B2 Embedded authentication systems in an electronic device Electricity 73 Active
US9519771B2 Embedded authentication systems in an electronic device Electricity 71 Active
US9304624B2 Embedded authentication systems in an electronic device Electricity 70 Active
US6653896B2 Differential rf/microwave power amplifier using independent synchronized polar modulators Electricity 70 Expired
US9495531B2 Embedded authentication systems in an electronic device Electricity 68 Active
US9274647B2 Embedded authentication systems in an electronic device Electricity 68 Active
US9134896B2 Embedded authentication systems in an electronic device Electricity 68 Active
US9128601B2 Embedded authentication systems in an electronic device Electricity 63 Active
US5848105A GMSK signal processors for improved communications capacity and quality Electricity 57 Expired
US8555067B2 Methods and apparatus for delivering electronic identification components over a wireless network Electricity 56 Active
US6983025B2 High quality power ramping in a communications transmitter Electricity 44 Expired
US8924715B2 Methods and apparatus for storage and execution of access control clients Electricity 44 Active
US6734724B1 Power control and modulation of switched-mode power amplifiers with one or more stages Electricity 41 Expired
US7054385B2 Reduction of average-to-minimum power ratio in communications signals Electricity 41 Expired
US8666368B2 Wireless network authentication apparatus and methods Electricity 38 Active
US7158494B2 Multi-mode communications transmitter Electricity 34 Expired
US6844776B2 Power control and modulation of switched-mode power amplifiers with one or more stages Electricity 34 Expired

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