Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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John Stach — 61 Patents

DIDigimarc: 61 patents #11 of 189Top 6%
Portland, OR: #261 of 9,213 inventorsTop 3%
Oregon: #510 of 28,073 inventorsTop 2%
Overall (All Time): #37,626 of 4,157,543Top 1%
61 Patents All Time
John Stach has been granted 61 US patents while listed as an inventor at Digimarc. The first was granted in 2003 and the most recent in June 2025. John Stach ranks #37,626 of 4,157,543 US inventors in our database (top 0.91%). Patent records list John Stach in Portland, OR, US.

Issued Patents All Time

Showing 1–25 of 61 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12322004 Embedding signals in a raster image processor Tomas Filler, Alastair M. Reed 2025-06-03
11651469 Generating artistic designs encoded with robust, machine-readable data Ravi K. Sharma, Ajith M. Kamath 2023-05-16 $9,722,000
11625551 Methods and arrangements for identifying objects Tony F. Rodriguez, Sean Calhoon 2023-04-11 $2,674,000
11455702 Weights embedded to minimize visibility change Alastair M. Reed 2022-09-27 $3,865,000
11410261 Differential modulation for robust signaling and synchronization Ajith M. Kamath 2022-08-09 $1,771,000
11288472 Cart-based shopping arrangements employing probabilistic item identification Tony F. Rodriguez, Bruce L. Davis, Geoffrey B. Rhoads, Alastair M. Reed, Eric D. Evans +2 more 2022-03-29 $3,471,000
11281876 Retail store with sensor-fusion enhancements Tony F. Rodriguez, Bruce L. Davis, Geoffrey B. Rhoads, Eric D. Evans, Rebecca L. Gerlach +1 more 2022-03-22 $6,615,000
11238556 Embedding signals in a raster image processor Tomas Filler, Alastair M. Reed 2022-02-01 $7,374,000
11068679 Methods and arrangements for identifying objects Tony F. Rodriguez, Sean Calhoon 2021-07-20 $4,277,000
10896307 Generating and reading optical codes with variable density to adapt for visual quality and reliability Ravi K. Sharma, Tomas Denemark, Brett A. Bradley, Geoffrey B. Rhoads, Joel R. Meyer 2021-01-19 $14,194,000
10872392 Generating artistic designs encoded with robust, machine-readable data Ravi K. Sharma, Christopher A. Ambiel, Ajith M. Kamath 2020-12-22 $15,962,000
10776894 Differential modulation for robust signaling and synchronization Ajith M. Kamath 2020-09-15 $4,178,000
10643295 Geometric enumerated watermark embedding for colors and inks Robert G. Lyons, Alastair M. Reed 2020-05-05 $3,419,000
10311538 Closed form non-iterative watermark embedding Alastair M. Reed 2019-06-04 $10,521,000
10219736 Methods and arrangements concerning dermatology Bruce L. Davis, Tony F. Rodriguez, Geoffrey B. Rhoads 2019-03-05 $2,193,000
10192087 Methods and arrangements for identifying objects Bruce L. Davis, Tony F. Rodriguez, Geoffrey B. Rhoads, John D. Lord, Eric D. Evans +2 more 2019-01-29 $899,000
10181170 Differential modulation for robust signaling and synchronization Ajith M. Kamath 2019-01-15 $651,000
10127623 Geometric enumerated watermark embedding for colors and inks Robert G. Lyons, Alastair M. Reed 2018-11-13 $1,298,000
9847976 Shared secret arrangements and optical data transfer John D. Lord 2017-12-19 $4,550,000
9747656 Differential modulation for robust signaling and synchronization Ajith M. Kamath 2017-08-29 $1,914,000
9710871 Geometric enumerated watermark embedding for spot colors Robert G. Lyons, Alastair M. Reed 2017-07-18 $2,042,000
9609117 Methods and arrangements employing sensor-equipped smart phones Bruce L. Davis, Tony F. Rodriguez, Geoffrey B. Rhoads, William Y. Conwell 2017-03-28 $696,000
9504420 Methods and arrangements for identifying dermatological diagnoses with clinically negligible probabilities Bruce L. Davis, Tony F. Rodriguez 2016-11-29 $1,950,000
9449357 Geometric enumerated watermark embedding for spot colors Robert G. Lyons, Alastair M. Reed 2016-09-20 $1,227,000
9449358 Arrangements for increasing detection confidence Geoffrey B. Rhoads 2016-09-20 $1,227,000