Inventor · Portland, OR, US

Tod F. Schiff

42Patents
10h-index
72Co-inventors
78Inventor score

Filing activity: Jun 29, 1990 → Jun 3, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
USRE39976E1 Multi-phase switching regulator General 211 Expired
US6683441B2 Multi-phase switching regulator Electricity 75 Expired
US6943535B1 Multiple-phase DC-DC converter topology Electricity 55 Expired
US5196906A Modular scatterometer with interchangeable scanning heads Physics 36 Expired
US6062948A Apparatus and method for gauging a workpiece Performing Operations; Transporting 34 Expired
US5625451A Methods and apparatus for characterizing a surface Physics 29 Expired
US5596403A System and method for measuring angular position Physics 17 Expired
US7893669B2 Efficient voltage converter methods and structures Emerging Cross-Sectional Technologies 16 Active
US5661556A System for measuring the total integrated scatter of a surface Physics 15 Expired
US9558144B2 Serial bus electrical termination control Physics 12 Active
US7595617B2 Switching power supply control Electricity 10 Active
US6023337A See through laser alignment target device Physics 8 Expired
US7965068B2 Switching power supply controller with high frequency current balance Electricity 6 Active
US7443150B2 Switching power supply control with phase shift Electricity 5 Expired
US8049476B2 Method for changing an output voltage and circuit therefor Electricity 5 Active
US9842082B2 Dynamically updating logical identifiers of cores of a processor Emerging Cross-Sectional Technologies 4 Active
US9916272B2 Serial bus electrical termination control Physics 3 Active
US7466894B2 Power supply output monitor Electricity 3 Expired
US7888921B2 Switching power supply controller with high frequency current balance Electricity 2 Active
US8570007B2 Phase doubling for switching power supply Electricity 2 Active
US10423202B2 System power management Emerging Cross-Sectional Technologies 2 Active
US6078391A Method and system for segmented scatter measurement Physics 2 Expired
US7688050B2 Switching power supply controller with unidirectional transient gain change Electricity 2 Active
US10020665B2 Power delivery system Electricity 2 Active
US7592718B1 Boosted switch drive with charge transfer Electricity 1 Expired

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