IT

Issei Tanaka

NI Nikon: 25 patents #146 of 2,493Top 6%
SC Stanley Electric Co.: 1 patents #550 of 1,072Top 55%
Overall (All Time): #152,648 of 4,157,543Top 4%
26
Patents All Time

Issued Patents All Time

Showing 1–25 of 26 patents

Patent #TitleCo-InventorsDate
11579421 Zoom lens, optical apparatus, and method for manufacturing zoom lens Akihiko Obama, Norikazu Yokoi 2023-02-14
10895721 Zoom lens, optical apparatus, and method for manufacturing zoom lens Akihiko Obama, Norikazu Yokoi 2021-01-19
10302905 Optical system, image-capturing device comprising optical system and method for manufacturing optical system Haruo Sato 2019-05-28
10203488 Zoom lens, optical apparatus, and method for manufacturing zoom lens Akihiko Obama, Norikazu Yokoi 2019-02-12
9791678 Zoom lens, imaging device and method for manufacturing the zoom lens Haruo Sato 2017-10-17
9753271 Eyepiece lens, viewfinder optical system and optical apparatus equipped with the same, and method for manufacturing eyepiece lens Hiroki Harada, Taku Matsuo 2017-09-05
9726869 Variable magnification optical system, optical device, and production method for variable magnification optical system Satoshi Yamaguchi 2017-08-08
9625689 Optical system, optical apparatus equipped therewith, and method for manufacturing optical system Hiroki Harada 2017-04-18
9523843 Zoom lens, optical apparatus, and method for manufacturing zoom lens Akihiko Obama, Norikazu Yokoi 2016-12-20
9354430 Zoom lens, imaging apparatus, and method for manufacturing zoom lens Haruo Sato 2016-05-31
9030755 Zoom lens system, optical apparatus, and method for manufacturing zoom lens system Norikazu Yokoi, Akihiko Obama 2015-05-12
9007703 Imaging lens, optical apparatus equipped therewith, and method for manufacturing imaging lens Motohisa Mouri 2015-04-14
8941921 Optical system, optical apparatus, and method for manufacturing optical system Tomoki Ito 2015-01-27
8913327 Zoom lens system, optical apparatus and method for manufacturing zoom lens system Akihiko Obama, Norikazu Yokoi 2014-12-16
8836928 Method for measuring wavefront aberration and wavefront aberration measuring apparatus 2014-09-16
8830592 Zoom lens, imaging apparatus, and method for manufacturing zoom lens Haruo Sato 2014-09-09
8721094 Lens system and optical apparatus Akihiko Obama 2014-05-13
8717686 Optical system, optical apparatus and optical system manufacturing method Hiroshi Yamamoto 2014-05-06
8605370 Imaging lens, optical apparatus equipped therewith, and method for manufacturing imaging lens Makoto Fujimoto 2013-12-10
8411369 Imaging lens, optical apparatus including imaging lens and method for manufacturing imaging lens Mami Muratani 2013-04-02
7336421 Optical system with anti-reflection coating 2008-02-26
7286293 Method of fabricating diffractive optical element 2007-10-23
7256948 Anti-reflection coating, and optical element and optical system with anti-reflection coating Tsuyoshi Murata 2007-08-14
7256939 Diffractive optical element and fabrication method thereof 2007-08-14
4970812 Sheet type large display unit Akio Uchida, Tadashi Irie 1990-11-20