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

James E. Clayton — 59 Patents

VSVarian Medical Systems: 53 patents #5 of 538Top 1%
VIVarex Imaging: 3 patents #22 of 131Top 20%
University of California: 2 patents #4,561 of 18,278Top 25%
Palo Alto, CA: #284 of 9,675 inventorsTop 3%
California: #6,060 of 386,348 inventorsTop 2%
Overall (All Time): #40,067 of 4,157,543Top 1%
59 Patents All Time
James E. Clayton has been granted 59 US patents while listed as an inventor at Varian Medical Systems. The first was granted in 1988 and the most recent in May 2025. James E. Clayton ranks #40,067 of 4,157,543 US inventors in our database (top 0.96%). Patent records list James E. Clayton in Palo Alto, CA, US.

Patents per Year

Patents granted per year, 1988 to 2025Bar chart with a peak of 6 patents in 2015.peak 61988: 1 patents19881990: 1 patents2005: 1 patents2007: 1 patents20072008: 2 patents2009: 1 patents2010: 3 patents20102011: 1 patents2012: 4 patents2013: 2 patents20132014: 3 patents2015: 6 patents2016: 3 patents20162017: 2 patents2018: 1 patents2019: 5 patents20192020: 5 patents2021: 3 patents2022: 3 patents20222023: 5 patents2024: 4 patents2025: 2 patents2025

Issued Patents All Time

Showing 1–25 of 59 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12317406 Accelerator and particle beam transport systems and methods 2025-05-27
12220203 Systems and methods for real-time target validation for image-guided radiation therapy John R. Adler, Jianing Shi 2025-02-11
12145006 Particle beam gun control systems and methods Mark E. Trail 2024-11-19
12005274 High dose rate radiotherapy, system and method 2024-06-11
11894161 Systems and methods for energy modulated radiation therapy Anuj K. Purwar, Dragos E. Constantin, Gard E. Meddaugh, Matthew C. Schmidt, Mark E. Trail +1 more 2024-02-06
11857805 Increased beam output and dynamic field shaping for radiotherapy system Anuj K. Purwar, Dragos E. Constantin 2024-01-02
11854761 Radiation anode target systems and methods Josh Star-Lack 2023-12-26
11819308 Systems and methods for real-time target validation for image-guided radiation therapy John R. Adler, Jianing Shi 2023-11-21
11712585 Systems, methods, and devices for high-energy irradiation 2023-08-01
11607130 Systems and methods for real-time target validation for image-guided radiation therapy John R. Adler, Jianing Shi 2023-03-21
11547873 Systems, methods, and devices for high-energy irradiation 2023-01-10
11478664 Particle beam gun control systems and methods Mark E. Trail 2022-10-25
11348755 Radiation anode target systems and methods Josh Star-Lack 2022-05-31
11330982 Systems and methods for real-time target validation for image-guided radiation therapy John R. Adler, Jianing Shi 2022-05-17
11007381 Increased beam output and dynamic field shaping for radiotherapy system Anuj K. Purwar, Dragos E. Constantin 2021-05-18
10912952 Systems, methods, and devices for high-energy irradiation 2021-02-09 $41,492,000
10910188 Radiation anode target systems and methods Josh Star-Lack 2021-02-02 $119,571,000
10879028 Beam position monitors for medical radiation machines Mark E. Trail 2020-12-29 $123,543,000
10843011 Particle beam gun control systems and methods Mark E. Trail 2020-11-24 $40,251,000
10674915 Systems and methods for real-time target validation for image-guided radiation therapy John R. Adler, Jianing Shi 2020-06-09 $21,855,000
10661102 Treatment energy delivery system Mark E. Trail 2020-05-26 $23,990,000
10622114 Systems and methods for energy modulated radiation therapy Anuj K. Purwar, Dragos E. Constantin, Gard E. Meddaugh, Matthew C. Schmidt, Mark E. Trail +1 more 2020-04-14 $56,880,000
10459091 Radiation detector and scanner Daniel Shedlock, David T. Nisius, Josh Star-Lack, Samuel Bradley Donnald, Gary Virshup 2019-10-29 $4,690,000
10449393 Radiation systems with minimal or no shielding requirement on building John R. Adler, David Whittum, Steven W. Prince 2019-10-22 $17,212,000
10314151 Charged particle accelerators, radiation sources, systems, and methods David Whittum, George Merdinian 2019-06-04 $4,917,000