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

James A. Henson — 9 Patents

QUQuantum: 6 patents #68 of 703Top 10%
MAMaxtor: 3 patents #132 of 656Top 25%
California: #67,547 of 386,348 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
James A. Henson has been granted 9 US patents while listed as an inventor at Quantum. The first was granted in 1995 and the most recent in July 2004. James A. Henson ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list James A. Henson in معلمی نژاد, CA, US.

Patents per Year

Patents granted per year, 1995 to 2004Bar chart with a peak of 2 patents in 1995.peak 21995: 2 patents19951998: 1 patents19981999: 1 patents19992000: 1 patents20002001: 1 patents20012002: 2 patents20022004: 1 patents2004

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6760820 Method of arbitrating requests for access to a single buffer memory in a disk drive Minnie T. Uppuluri, Gregory R. Kahlert 2004-07-06 $6,090,000
6452990 Synchronous detection of wide bi-phase coded servo information for disk drive Michael D. Leis, Ara Patapoutian, Mathew P. Vea, Richard M. Ehrlich, Kevin D. Fisher +1 more 2002-09-17 $4,215,000
6378051 Interrupt signal prioritized shared buffer memory access system and method Minnie T. Uppuluri, Gregory R. Kahlert 2002-04-23 $24,570,000
6178486 Time allocation shared memory arbitration for disk drive controller Parminder K. Gill, Clifford M. Gold 2001-01-23
6141728 Embedded cache manager Horia Simionescu, Luan Bui, Clifford M. Gold 2000-10-31
5862005 Synchronous detection of wide bi-phase coded servo information for disk drive Michael D. Leis, Ara Patapoutian, Mathew P. Vea, Richard M. Ehrlich, Kevin D. Fisher +1 more 1999-01-19 $22,080,000
5777760 Position feedback system for volume holographic storage media Nathan Hays, Christopher M. Carpenter, William Akin, Richard M. Ehrlich, Lance D. Beazley 1998-07-07 $24,547,000
5471176 Glitchless frequency-adjustable ring oscillator Scott E. Richmond, William Akin 1995-11-28 $5,492,000
5465343 Shared memory array for data block and control program storage in disk drive James P. McGrath, Bruce R. Peterson, Tim R. Glassburn, Michael Raab, James H. Do 1995-11-07 $5,541,000