Inventor · Campbell, CA, US

Robert D. Widergren

19Patents
5h-index
9Co-inventors
59Inventor score

Filing activity: Feb 18, 1977 → Jan 3, 2020

Most-cited inventions

PatentTitleAreaCited byStatus
US4302775A Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback Electricity 442 Expired
US4394774A Digital video compression system and methods utilizing scene adaptive coding with rate buffer feedback Electricity 270 Expired
US4385363A Discrete cosine transformer Electricity 80 Expired
US4091424A Facsimile compression system Physics 58 Expired
US8751795B2 Secure transfer and tracking of data using removable non-volatile memory devices Physics 7 Active
US10104046B2 Content distribution systems and methods Electricity 5 Active
US7508943B2 Multimedia storage systems and methods Physics 5 Expired
US10148625B2 Secure transfer and tracking of data using removable nonvolatile memory devices Physics 3 Active
US8028173B2 Content distribution systems and methods Physics 3 Active
US9647992B2 Secure transfer and tracking of data using removable nonvolatile memory devices Physics 2 Active
US9183045B2 System and method for data collection and exchange with protected memory devices Physics 2 Active
US8027471B2 Multimedia storage systems and methods Physics 1 Active
US11095622B2 Content distribution systems and methods Electricity 0 Active
US10331365B2 Accessing a serial number of a removable non-volatile memory device Physics 0 Active
US10558811B2 System and method for data collection and exchange with protected memory devices Physics 0 Active
US11417663B2 System and method for data collection and exchange with protected memory devices Electricity 0 Active
US9058838B2 Multimedia storage systems and methods Physics 0 Active
US9921746B2 Multimedia storage systems and methods Physics 0 Active
US9552855B2 Accessing a serial number of a removable non-volatile memory device Physics 0 Active

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