Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
AN

Akira Nagumo

ODOki Data: 52 patents #2 of 635Top 1%
OCOki Electric Industry Co.: 8 patents #196 of 2,807Top 7%
OCOki Electronic Industries Co.: 1 patents #1 of 29Top 4%
Overall (All Time): #38,088 of 4,157,543Top 1%
61 Patents All Time

Issued Patents All Time

Showing 26–50 of 61 patents

Patent #TitleCo-InventorsDate
8258723 Light-emitting element array, driving device, and image forming apparatus 2012-09-04
8184139 Redundance control of temperature compensation for a LED printhead 2012-05-22
8164944 Driver circuit and image forming apparatus 2012-04-24
8149259 Drive device, LED array, LED head, and image forming apparatus provided therewith 2012-04-03
8138681 Driving circuit, LED head and image forming apparatus 2012-03-20
8106931 Semiconductor device, print head and image forming apparatus 2012-01-31
8093828 Drive circuit, light emitting diode head, and image forming apparatus 2012-01-10
8089501 Light emitting apparatus, optical printhead, and image forming apparatus 2012-01-03
7990407 Drive circuit, light print head, and image forming apparatus 2011-08-02
7961209 Integrated circuit that emits light, optical head that incorporates the integrated circuit, and image forming apparatus that uses the optical head 2011-06-14
7924304 Light-emitting element array, drive controlling device, recording head, and image forming device 2011-04-12
7923737 Three-terminal switch array device, combined semiconductor device, and image forming apparatus 2011-04-12
7821211 Drive circuit, light emitting diode head, and image forming apparatus 2010-10-26
7806501 Driving apparatus, LED head and image forming apparatus 2010-10-05
7804338 Drive circuit, light emitting diode head, and image forming apparatus 2010-09-28
7075674 Image recording apparatus Toshiki Sato 2006-07-11
6717604 Array driving circuit with control voltage adjusted at both ends, and array head using same 2004-04-06
6603496 Image recording method and apparatus enlarging isolated dots Toshiki Sato 2003-08-05
6535235 Drive circuit and LED head incorporating the drive circuit 2003-03-18
6529229 Driving circuit, printed wiring board, and print head with clock inverting circuits 2003-03-04
6498616 Print head having non-volatile memory and means for transmitting correction and inherent data Minoru Teshima, Jiro Tanuma 2002-12-24
6400349 Driving circuit and LED head with constant turn-on time 2002-06-04
6388695 Driving circuit with switching element on static current path, and printer using same 2002-05-14
6373513 Printer having print data correction circuit Jiro Tanuma, Katsuyuki Ito, Shinichi Katakura 2002-04-16
6194960 Driver IC 2001-02-27