Inventor · New Port Richey, FL, US

Alexander Topchy

130Patents
14h-index
41Co-inventors
82Inventor score

Filing activity: Dec 14, 2007 → Apr 19, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US8369972B2 Methods and apparatus to perform audio watermarking and watermark detection and extraction Electricity 72 Active
US9788777B1 Methods and apparatus to identify a mood of media Human Necessities 69 Active
US8666528B2 Methods, apparatus and articles of manufacture to provide secondary content in association with primary broadcast media content Electricity 58 Active
US8359205B2 Methods and apparatus to perform audio watermarking and watermark detection and extraction Electricity 50 Active
US10318580B2 Detecting media watermarks in magnetic field data Physics 39 Active
US8327396B2 Methods, systems, and apparatus for multi-purpose metering Electricity 34 Active
US8060372B2 Methods and appratus for characterizing media Electricity 29 Active
US9368123B2 Methods and apparatus to perform audio watermark detection and extraction Physics 23 Active
US8121830B2 Methods and apparatus to extract data encoded in media content Electricity 21 Active
US9426525B2 Methods and apparatus to count people in an audience Electricity 17 Active
US8554545B2 Methods and apparatus to extract data encoded in media content Electricity 16 Active
US8600531B2 Methods and apparatus for generating signatures Electricity 15 Active
US8508357B2 Methods and apparatus to encode and decode audio for shopper location and advertisement presentation tracking Physics 15 Active
US8457951B2 Methods and apparatus for performing variable black length watermarking of media Physics 15 Active
US10448123B1 Methods and apparatus to extend a timestamp range supported by a watermark Electricity 12 Active
US9055336B2 Methods, systems and apparatus for multi-purpose metering Electricity 11 Active
US8457972B2 Methods and apparatus for characterizing media Electricity 10 Active
US9093064B2 Down-mixing compensation for audio watermarking Physics 9 Active
US10448122B1 Methods and apparatus to extend a timestamp range supported by a watermark Electricity 8 Active
US9460730B2 Methods and apparatus to perform audio watermarking and watermark detection and extraction Electricity 8 Active
US10003846B2 Methods, apparatus and articles of manufacture to provide secondary content in association with primary broadcast media content Electricity 7 Active
US8364491B2 Methods and apparatus for characterizing media Electricity 7 Active
US8752081B2 Methods, systems and apparatus for multi-purpose metering Electricity 7 Active
US9136965B2 Methods and apparatus for generating signatures Electricity 6 Active
US10580421B2 Methods and apparatus to perform audio watermarking and watermark detection and extraction Electricity 6 Active

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