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USPTO Patent Rankings Data through Dec 31, 2025
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Michael Callahan — 48 Patents

GLGroup One Limited: 4 patents #3 of 8Top 40%
JAJabil: 3 patents #54 of 170Top 35%
PIPixelworks: 1 patents #43 of 65Top 70%
SDSmart Design: 1 patents #1 of 5Top 20%
TFThermo Fisher: 1 patents #1,342 of 2,015Top 70%
ETElemental Technologies: 1 patents #7 of 12Top 60%
Igt: 1 patents #1,180 of 1,260Top 95%
GHGeneral Housewares: 1 patents #28 of 59Top 50%
San Francisco, CA: #510 of 26,999 inventorsTop 2%
California: #8,595 of 386,348 inventorsTop 3%
Overall (All Time): #57,596 of 4,157,543Top 2%
48 Patents All Time
Michael Callahan has been granted 48 US patents while listed as an inventor at Group One Limited. The first was granted in 1984 and the most recent in August 2025. Michael Callahan ranks #57,596 of 4,157,543 US inventors in our database (top 1.4%). Patent records list Michael Callahan in San Francisco, CA, US.

Issued Patents All Time

Showing 1–25 of 48 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12377345 Methods and systems for interactive gaming platform scene generation utilizing captured visual data and artificial intelligence-generated environment — 2025-08-05
12117163 Lighting equipment — 2024-10-15
12110217 Chain motor power distribution and control — 2024-10-08
11940387 Portable liquid analyzer Christian Loane 2024-03-26
11761610 Twist-lock plug improved to positively lock with prior art receptacles — 2023-09-19
11592167 Distributable dimmer package having a six-circuit output connector and re-configurable power input — 2023-02-28
11413520 Method and system for a personal interaction game platform — 2022-08-16
11359374 Leg-carriage type trusses — 2022-06-14
11187398 Portable followspot stand having an improved range of height and tilt angle adjustment — 2021-11-30
11181252 Apparatus for steering a light beam using two mirrors having only one mirror moved — 2021-11-23
11059187 Apparatus, system and method for providing a vacuum ejector for an end effector Jeroen Bosboom, Daniel Bateman 2021-07-13 $24,420,000
11002012 Adaptor for racking truss leg carriages — 2021-05-11
10942126 Portable liquid analyzer Christian Loane 2021-03-09
10773153 Method and system for a personal interaction game platform — 2020-09-15
10745915 Leg carriage type trusses — 2020-08-18
10614413 Inventory management system and method of use Justin Curry, Darren Thierry, Mark Cunningham, Richard Waight 2020-04-07
10586253 Anonymous digital identification — 2020-03-10
10493638 Apparatus, system and method for providing a vacuum ejector for an end effector Jeroen Bosboom, Daniel Bateman 2019-12-03 $18,775,000
10330603 Mass produced, low cost, portable test kit for the detection and identification of chemical and biological agents — 2019-06-25
10214904 Trusses and similar structures — 2019-02-26
10099387 Apparatus, system and method for providing a vacuum ejector for an end effector Jeroen Bosboom, Daniel Bateman 2018-10-16 $10,875,000
9989473 Portable liquid analyzer — 2018-06-05
9807551 Location-specific data acquisition — 2017-10-31
9759733 Mass produced, low cost, portable test kit for the detection and identification of narcotics — 2017-09-12
9633372 Anonymous digital identification — 2017-04-25

Nearby-Ranked Inventors

Steven Scott Gorshe48
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Dan Baum48
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David A. Koblas48
Yasushi Ochi48
Roger Spitz48
Kevin A. O'Lenick48