Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
RC

Robert Chen — 25 Patents

Apple: 8 patents #3,866 of 18,612Top 25%
LELegerity: 3 patents #24 of 99Top 25%
Pitney Bowes: 3 patents #462 of 1,313Top 40%
STSymbol Technologies: 2 patents #440 of 1,181Top 40%
ATAT&T: 2 patents #7,295 of 18,772Top 40%
LSLsi: 2 patents #1,454 of 3,238Top 45%
APAvago Technologies General Ip (Singapore) Pte.: 1 patents #883 of 2,004Top 45%
AVAvaya: 1 patents #1,063 of 775Top 140%
ASAgere Systems: 1 patents #984 of 1,849Top 55%
North Andover, MA: #41 of 527 inventorsTop 8%
Massachusetts: #4,179 of 88,656 inventorsTop 5%
Overall (All Time): #158,593 of 4,157,543Top 4%
25 Patents All Time
Robert Chen has been granted 25 US patents while listed as an inventor at Apple. The first was granted in 1990 and the most recent in September 2024. Robert Chen ranks #158,593 of 4,157,543 US inventors in our database (top 3.8%). Patent records list Robert Chen in North Andover, MA, US.

Issued Patents All Time

Showing 1–25 of 25 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12085500 Reference switch architectures for noncontact sensing of substances Miikka M. Kangas, Mark Alan Arbore, David I. Simon, Michael J. Bishop, James W. Hillendahl 2024-09-10 $233,602,000
11740126 Multiplexing and encoding for reference switching Trent Ridder, Mark Alan Arbore, Gary Shambat, David I. Simon, Miikka M. Kangas 2023-08-29
11585749 Reference switch architectures for noncontact sensing of substances Miikka M. Kangas, Mark Alan Arbore, David I. Simon, Michael J. Bishop, James W. Hillendahl 2023-02-21 $234,064,000
11041758 Multiplexing and encoding for reference switching Trent Ridder, Mark Alan Arbore, Gary Shambat, David I. Simon, Miikka M. Kangas 2021-06-22 $370,261,000
10801950 Reference switch architectures for noncontact sensing of substances Miikka M. Kangas, Mark Alan Arbore, David I. Simon, Michael J. Bishop, James W. Hillendahl 2020-10-13 $241,153,000
10690591 Measurement time distribution in referencing schemes Trent Ridder, Miikka M. Kangas, David I. Simon, Matthew A. Terrel 2020-06-23 $111,648,000
10670466 Polarization selective, frequency selective, and wide dynamic range detectors, imaging arrays, readout integrated circuits, and sensor systems Miikka M. Kangas, Michael J. Bishop, David I. Simon, Harold L. Sontag, George D. Skidmore 2020-06-02 $124,146,000
10323987 Polarization selective, frequency selective, and wide dynamic range detectors, imaging arrays, readout integrated circuits, and sensor systems Miikka M. Kangas, Michael J. Bishop, David I. Simon, Harold L. Sontag, George D. Skidmore 2019-06-18 $140,625,000
9939322 Polarization selective, frequency selective, and wide dynamic range detectors, imaging arrays, readout integrated circuits, and sensor systems Miikka M. Kangas, Michael J. Bishop, David I. Simon, Harold L. Sontag, George D. Skidmore 2018-04-10 $65,044,000
9276560 Systems and methods for filter initialization and tuning James A. Bailey, Richard T. Kaul 2016-03-01 $57,907,000
8816761 Tunable biquad filter circuit including phase shift detection and methods for using such James A. Bailey, Richard T. Kaul 2014-08-26
8560589 Systems and methods for filter initialization and tuning James A. Bailey, Richard T. Kaul 2013-10-15
7561848 Apparatus for manufacturing management using a wireless device Mark E. Depperschmidt, James Lee, Patrick Gray 2009-07-14
7135915 Tuning filters having transconductor cells James A. Bailey 2006-11-14 $7,457,000
6940969 Capacitor cancellation method and apparatus John Gammel, Dewayne A. Spires 2005-09-06
6842518 Frequency-dependent impedance synthesis for DSL interface circuits John Gammel, Dewayne A. Spires 2005-01-11
6838977 Apparatus for manufacturing management using a wireless device Mark E. Depperschmidt, James Lee, Patrick Gray 2005-01-04 $7,657,000
6657496 Amplifier circuit with regenerative biasing John Gammel, Joseph H. Havens, Dewayne A. Spires 2003-12-02
6301358 Dual-slope current battery-feed circuit Dieter J. H. Knollman 2001-10-09 $7,459,000
5881129 Self-monitoring line interface circuit John Gammel, Dewayne A. Spires 1999-03-09
5854839 Dual voltage, self-monitoring line circuit John Gammel, Dewayne A. Spires 1998-12-29 $116,665,000
5848149 Subscriber line interface and power circuit Paul W. Frazier, John Gammel, Andrew Marsh, Apurba Roy, Dewayne A. Spires 1998-12-08 $52,365,000
5153842 Integrated circuit package label and/or manifest system Daniel F. Dlugos 1992-10-06 $8,451,000
4980542 Postal charge accounting system Winslow E. Jackson, Paul Kim, Joseph L. Gargiulo, Robert T. Durst, Jr., Wojciech M. Chrosny 1990-12-25
4978839 Postage meter value card system Winslow E. Jackson, Paul Kim 1990-12-18 $7,160,000