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USPTO Patent Rankings Data through Dec 31, 2025
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Ken Sumiyoshi — 114 Patents

Nec: 46 patents #96 of 14,502Top 1%
NTNlt Technologies: 41 patents #1 of 164Top 1%
NTNec Lcd Technologies: 14 patents #20 of 305Top 7%
TJTianma Japan: 11 patents #3 of 72Top 5%
KMKonica Minolta: 2 patents #1,382 of 2,718Top 55%
KCKuraray Co.: 2 patents #662 of 1,827Top 40%
Dai Nippon Printing Co.: 2 patents #976 of 2,222Top 45%
DCDainippon Ink And Chemicals: 2 patents #241 of 1,002Top 25%
GFGetner Foundation: 2 patents #2 of 11Top 20%
JSJsr: 2 patents #443 of 1,137Top 40%
SCSumitomo Bakelite Co.: 2 patents #227 of 790Top 30%
SCSumitomo Chemical: 2 patents #1,792 of 4,033Top 45%
TCToppan Printing Co.: 2 patents #414 of 1,467Top 30%
TIToray Industries: 1 patents #2,000 of 3,690Top 55%
HCHitachi Chemical Company: 1 patents #1,071 of 1,946Top 60%
TCTianma Microelectronics Co.: 1 patents #236 of 431Top 55%
SGSeiko Group: 1 patents #32 of 90Top 40%
SCShanghai Tianma Micro-Electronics Co.: 1 patents #254 of 417Top 65%
WCWuhan Tianma Microelectronics Co.: 1 patents #211 of 395Top 55%
Yokohama, JP: #262 of 49,234 inventorsTop 1%
Overall (All Time): #11,094 of 4,157,543Top 1%
114 Patents All Time
Ken Sumiyoshi has been granted 114 US patents while listed as an inventor at Nec. The first was granted in 1993 and the most recent in November 2025. Ken Sumiyoshi ranks #11,094 of 4,157,543 US inventors in our database (top 0.27%). Patent records list Ken Sumiyoshi in Yokohama, JP.

Issued Patents All Time

Showing 1–25 of 114 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12467866 Fluorescence polarization immunoassay method and fluorescence polarization immunoassay device Sho ONOSE, Ayato Imai 2025-11-11
12392780 Support for fluorescence polarization immunoassay, fluorescence polarization immunoassay kit and fluorescence polarization immunoassay Ayuko IMAI, Masanori Shirokawa 2025-08-19
12313949 Polarization modulation element and three-dimensional-image display device Yukie Keicho, Tetsushi Sato 2025-05-27
12313509 Sample solution preparation method for measurement by immunity analysis method using fluorescence, measurement cell, measurement kit, and sample solution preparation device Ayuko IMAI 2025-05-27
12235561 Light ray direction control element and display device Kunihiro Shiota 2025-02-25
12066435 Microdevice and analysis device Chikaaki MIZOKUCHI, Koji Shigemura 2024-08-20
11798966 Light ray direction control element, manufacturing method for light ray direction control element, and imaging element Kunihiro Shiota, Hiroshi Haga 2023-10-24
11585795 Optical detection type chemical sensor Haruki Yamane, Kiyoshi Yamakawa, Shingo Takahashi, Koki Takahashi, Satoshi Miura +2 more 2023-02-21
11525782 Fluorescent image analyzer Masanori Shirokawa 2022-12-13
11281066 Light distribution control device and electronic device Kunihiro Shiota, Masanori Shirokawa 2022-03-22
11256128 Display device Masanori Shirokawa 2022-02-22
11086185 Light beam direction control element, display device, and manufacturing method for light beam direction control element Kunihiro Shiota, Takumi Usukura 2021-08-10
10824002 Display apparatus Ayuko IMAI, Yukie Keicho 2020-11-03
10663432 Gas sensor and gas detection method Ayuko IMAI 2020-05-26
10171798 Liquid crystal lenticular lens element, driving method therefor, stereoscopic display device, and terminal device Ayuko IMAI, Hidenori Ikeno 2019-01-01
9995986 Light control element, light control device, and method for producing light control element Ayuko IMAI 2018-06-12
9791681 Optical element and display apparatus — 2017-10-17
9606403 Liquid crystal display device comprising segmented electrodes and segmented liquid crystal orientations and method for producing the same Mitsuhiro Sugimoto, Shinichi Nishida, Hidenori Ikeno, Hideki Ito 2017-03-28
9507221 Liquid crystal lens element, display unit and terminal — 2016-11-29
9495927 Liquid crystal display apparatus, driving method for same, and driving circuit for same Kenichi Takatori, Hiroyuki Sekine 2016-11-15
9244546 Image display device, electronic apparatus using the same, display output control method for image display device, and output control program thereof Koji Mimura 2016-01-26
9134580 Lateral electric field liquid crystal display device and manufacturing method thereof Shinichi Nishida, Hideki Ito, Mitsuhiro Sugimoto, Hidenori Ikeno 2015-09-15
9111495 Liquid crystal display device, backlight used for same display device, method for driving same backlight and method for manufacturing same backlight Toshihiro Yoshioka, Hiroshi Hayama, Jin Matsushima 2015-08-18
9091872 Semi-transmissive liquid crystal display device and portable terminal device Jin Matsushima, Hiroshi Okumura 2015-07-28
9081219 Lateral electric field liquid crystal display device and manufacturing method thereof Shinichi Nishida, Hideki Ito, Mitsuhiro Sugimoto, Hidenori Ikeno 2015-07-14

Nearby-Ranked Inventors

Robert Ernest Troxler114
Huarui Liang114
Tae Wook Kim114
Minori Noguchi114
David H. Fine114
Paul J. Schuele114
Gerhard Schmidt114
Christian Mueller114
Yuichi Yoshida114