Inventor · Southborough, MA, US

Ricardo F. Carreras

45Patents

13h-index

35Co-inventors

81Inventor score

Filing activity: Mar 11, 1991 → Aug 17, 2023

Most-cited inventions

Patent	Title	Area	Cited by	Status
US8798283B2	Providing ambient naturalness in ANR headphones	Electricity	56	Active
US8155334B2	Feedforward-based ANR talk-through	Electricity	50	Active
US8073150B2	Dynamically configurable ANR signal processing topology	Physics	46	Active
US8073151B2	Dynamically configurable ANR filter block topology	Physics	41	Active
US8184822B2	ANR signal processing topology	Electricity	36	Active
US5216723A	Permanent magnet transducing	Electricity	34	Expired
US8532310B2	Frequency-dependent ANR reference sound compression	Physics	24	Active
US8165313B2	ANR settings triple-buffering	Physics	22	Active
US8208650B2	Feedback-based ANR adjustment responsive to environmental noise levels	Physics	21	Active
US7270472B2	Resonant shaking	Emerging Cross-Sectional Technologies	14	Expired
US8315405B2	Coordinated ANR reference sound compression	Electricity	14	Active
US8280066B2	Binaural feedforward-based ANR	Physics	13	Active
US8090114B2	Convertible filter	Electricity	13	Active
US8345888B2	Digital high frequency phase compensation	Physics	12	Active
US5917923A	Satellitic compact electroacoustical transducing	Electricity	11	Expired
US9123320B2	Frequency-dependent ANR reference sound compression	Physics	10	Active
US10212507B1	Headphone	Electricity	9	Active
US8472637B2	Variable ANR transform compression	Physics	8	Active
US10074354B2	Providing ambient naturalness in ANR headphones	Electricity	8	Active
US10516929B2	Audio device	Electricity	7	Active
US8355513B2	Convertible filter	Electricity	5	Active
US10741164B1	Multipurpose microphone in acoustic devices	Physics	5	Active
US8144890B2	ANR settings boot loading	Electricity	5	Active
US10580398B2	Parallel compensation in active noise reduction devices	Physics	5	Active
US9589557B2	Dynamically configurable ANR filter block topology	Physics	4	Active

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