IM

Isao Matsumura

Canon: 33 patents #1,573 of 19,416Top 9%
Sharp Kabushiki Kaisha: 2 patents #5,184 of 10,731Top 50%
Bridgestone: 1 patents #1,586 of 2,860Top 60%
📍 Yaita, JP: #4 of 83 inventorsTop 5%
Overall (All Time): #93,138 of 4,157,543Top 3%
36
Patents All Time

Issued Patents All Time

Showing 1–25 of 36 patents

Patent #TitleCo-InventorsDate
11993041 Tire vulcanizing bladder and pneumatic tire Junichi ORIDE, Yasuhiro Oda, Yuya MORITA 2024-05-28
6801913 Medical instrument control system Yoshito Yoneyama 2004-10-05
6702441 Ophthalmic measuring device 2004-03-09
5116114 Ophthalmologic apparatus Yukitsugu Nakamura, Yoshimasa Hamano, Takashi Masuda, Shigeo Maruyama, Kazunobu Kobayashi 1992-05-26
5066117 Perimeter 1991-11-19
5056522 Supersonic ophthalmic measuring apparatus Takashi Masuda, Yoshimasa Hamano, Shigeo Maruyama, Yukitsugu Nakamura, Kazunobu Kobayashi 1991-10-15
5037194 Ophthalmologic apparatus and method of compounding the image of an eye to be examined Yoshimi Kohayakawa, Kenichi Kashiwagi 1991-08-06
5018851 Slit illuminating apparatus 1991-05-28
4999009 Device for use with a cornea shape measuring apparatus 1991-03-12
4991584 Ophthalmic examining apparatus and method capable of examining glaucoma Kazunobu Kobayashi 1991-02-12
4917458 Cornea shape measuring apparatus 1990-04-17
4867554 Surface examining apparatus 1989-09-19
4813778 Ophthalmic positioning apparatus Haruhisa Madate, Koichi Yano 1989-03-21
4787734 Stereoscopic microscope 1988-11-29
4762410 Ophthalmic instrument Kyoji Sekiguchi, Haruhisa Madate 1988-08-09
4699481 Stereoscopic microscope 1987-10-13
4690525 Eye fundus camera Kazunobu Kobayashi, Kyoji Sekiguchi, Haruhisa Madate 1987-09-01
4678297 Ophthalmic instrument Yasuyuki Ishikawa 1987-07-07
4674845 Stereoscopic microscope with means for varying stereoscopic viewing angle 1987-06-23
4657356 Stereoscopic microscope with a pair of image rotation correcting means 1987-04-14
4620779 Ophthalmologic apparatus 1986-11-04
4572627 Eye fundus camera Haruhisa Madate, Kyoji Sekiguchi 1986-02-25
4421391 Auto eye-refractometer Yasuyuki Ishikawa, Reiji Hirano, Shigeo Maruyama, Yoshimi Kohayakawa 1983-12-20
4376573 Apparatus for measuring the refractive power of the eye Yasuyuki Ishikawa, Shigeo Maruyama, Reiji Hirano, Yoshimi Kohayakawa 1983-03-15
4372655 Automatic eye-refractometer Yasuyuki Ishikawa, Shigeo Maruyama, Reiji Hirano, Yoshimi Kohayakawa 1983-02-08