KH

Katsushi Hamakubo

Sumitomo Electric Industries: 13 patents #1,957 of 21,551Top 10%
WP Wd Media (Singapore) Pte.Ltd.: 8 patents #8 of 41Top 20%
HO Hoya: 5 patents #232 of 1,290Top 20%
WM Wd Media: 2 patents #50 of 182Top 30%
HT Hoya Lens Thailand: 1 patents #59 of 94Top 65%
Overall (All Time): #122,808 of 4,157,543Top 3%
30
Patents All Time

Issued Patents All Time

Showing 1–25 of 30 patents

Patent #TitleCo-InventorsDate
12054629 Resin composition, optical fiber, and method for manufacturing optical fiber Kazuyuki SOHMA 2024-08-06
12025829 Resin composition, optical fiber and method for producing optical fiber Chiaki TOKUDA 2024-07-02
11960115 Optical fiber Kazuyuki SOHMA, Tatsuya Konishi 2024-04-16
11947161 Resin composition, optical fiber secondary coating material, optical fiber and manufacturing method of optical fiber Kazuyuki SOHMA, Kazuya TOKUDA, Tatsuya Konishi 2024-04-02
11919804 Resin composition, secondary coating material for optical fiber, optical fiber, and method for manufacturing optical fiber Chiaki TOKUDA, Noriaki IWAGUCHI, Takashi Fujii 2024-03-05
11914186 Optical fiber Yuya HOMMA 2024-02-27
11820704 Resin composition, secondary coating material for optical fiber, optical fiber, and method for producing optical fiber Chiaki TOKUDA, Noriaki IWAGUCHI, Kazuya TOKUDA 2023-11-21
11814493 Coating composition, eyeglass lens, and method for manufacturing eyeglass Takako ISHIZAKI, Natsumi TASAKI 2023-11-14
11629269 Resin composition, secondary coating material for optical fiber, and optical fiber Yuya HOMMA 2023-04-18
11603331 Optical fiber 2023-03-14
11579358 Optical fiber Chiaki TOKUDA, Noriaki IWAGUCHI, Tatsuya Konishi 2023-02-14
11573367 Resin composition and optical fiber Yuya HOMMA 2023-02-07
11472735 Optical fiber Chiaki TOKUDA, Noriaki IWAGUCHI 2022-10-18
11415769 Intermittent connection-type optical fiber tape core wire, optical fiber cable, and method for manufacturing intermittent connection-type optical fiber tape core wire Fumiaki Sato, Yoshiaki Nagao, Tsuguo AMANO, Ken Takahashi, Noriaki IWAGUCHI +1 more 2022-08-16
10072155 Coating composition Kae Ito 2018-09-11
9984715 Magnetic disk and manufacturing method thereof Koichi Shimokawa, Kae Itoh 2018-05-29
9873799 Coating composition Kae Ito 2018-01-23
9783683 Coating composition Kae Ito 2017-10-10
9558778 Lubricant compound for magnetic disk and magnetic disk Kota Suzuki, Koichi Shimokawa, Kae Itoh 2017-01-31
9500774 Plastic lens and production method therefor Kae Ito 2016-11-22
9322968 Polarizing lens Eiichi Yajima, Kae Ito 2016-04-26
9245568 Magnetic disk and method of manufacturing the same Kae Itoh 2016-01-26
9177586 Magnetic disk and manufacturing method thereof Koichi Shimokawa, Kae Itoh 2015-11-03
9005782 Magnetic disk and method of manufacturing the same Kae Itoh 2015-04-14
8999534 Lubricant for magnetic disk and magnetic disk Koichi Shimokawa 2015-04-07