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USPTO Patent Rankings Data through Dec 31, 2025
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Masamitsu Nagamine — 14 Patents

ODOki Data: 12 patents #49 of 635Top 8%
OCOki Electric Industry Co.: 2 patents #947 of 2,807Top 35%
Tokyo, JP: #11,195 of 90,295 inventorsTop 15%
Overall (All Time): #332,869 of 4,157,543Top 9%
14 Patents All Time
Masamitsu Nagamine has been granted 14 US patents while listed as an inventor at Oki Data. The first was granted in 1998 and the most recent in August 2022. Masamitsu Nagamine ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Masamitsu Nagamine in Tokyo, JP.

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
11415907 Optical head, image forming apparatus, image reading apparatus, and method of producing optical head 2022-08-16
11199650 Lens unit, exposure device, reading head, image forming apparatus, and image reading apparatus Ren Nakamichi, Akihiro Yamamura 2021-12-14
10281836 Image forming apparatus 2019-05-07
10009501 Optical print head, image forming apparatus, and method of manufacturing the optical print head Takahito Suzuki, Manabu Imai 2018-06-26
9471000 Exposure device and image formation apparatus having thermally-conductive sealant 2016-10-18
8547411 Exposure device, LED head and image forming device Yo Kishikawa 2013-10-01
8390662 Exposing device having light emitting elements and image forming apparatus using the same Takao Sakai 2013-03-05
8305418 Exposure device and image forming apparatus having a forcing portion 2012-11-06
7760224 Exposure device and image forming apparatus with supporting member for focusing lens and light emitting element array 2010-07-20
6809752 Optical head and image forming apparatus 2004-10-26
6801232 Distance maintaining member between optical head and image drum Norio Nakajima, Yu Kobayashi 2004-10-05
6397021 Image forming apparatus Kuniharu Hayashi, Tsutomu Yamane, Hiroyuki Yajima, Tatsuya Murakami 2002-05-28
6009299 Electrophotographic imaging apparatus using multi-layered toner Toru Ishihara, Koichi Matsuzaki, Kuniharu Hayashi 1999-12-28
5839021 Developing unit for an electrophotographic printer employing a supply roller for transferring toner to a developing roller Kuniharu Hayashi, Koichi Matsuzaki 1998-11-17