Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10327799 | Scissors | Makoto Matsuo, Hiroshi Ujiie | 2019-06-25 |
| 9506143 | Protective film and method for producing same | Naoto Ohtake, Makoto Matsuo | 2016-11-29 |
| 5048922 | Optical fiber cable | Kiyofumi Mochizuki, Yoshinori Namihira, Makoto Nunokawa, Hitoshi Yamamoto | 1991-09-17 |
| 4972513 | Multi-point optical amplification repeating system | Kiyofumi Mochizuki, Noboru Edagawa | 1990-11-20 |
| 4933990 | Optical privacy communication system in two-way optical transmission system | Kiyofumi Mochizuki, Hiroharu Wakabayashi | 1990-06-12 |
| 4923291 | Optical amplification | Noboru Edagawa, Kiyofumi Mochizuki | 1990-05-08 |
| 4911522 | Core alignment system for optical fibers | Yuichi Shirasaki, Masayuki Fujise, Kenichi Asakawa | 1990-03-27 |
| 4899043 | Fault monitoring system for optical fiber communication systems | Kiyofumi Mochizuki, Noboru Edagawa | 1990-02-06 |
| 4764980 | System for measuring delay time variation in optical fiber digital communication system | Haruo Sakaguchi, Norio Seki, Shu Yamamoto | 1988-08-16 |
| 4747094 | Signal coupling system for optical repeater system | Haruo Sakaguchi, Norio Seki, Shu Yamamoto | 1988-05-24 |
| 4678371 | Burying device for submarine cables and method for guiding the same | Kazuomi Yamamura, Hideo Ishihara, Shizuo Suzuki, Yuichi Sirasaki, Kenichi Asakawa | 1987-07-07 |
| 4641915 | Rotary joint for optical fibers | Kenichi Asakawa, Yuichi Shirasaki | 1987-02-10 |
| 4637686 | Optical fiber with light reflecting particles dispersed through buffer layers to dissipate leaky cladding modes | Yuichi Shirasaki, Masayuki Fujise, Kenichi Asakawa | 1987-01-20 |
| 4625172 | Apparatus for supplying AC current to an underwater cable | Kazuomi Yamamura, Hideo Ishihara, Shizuo Suzuki, Yuichi Sirasaki, Kenichi Asakawa | 1986-11-25 |
| 4544233 | Underwater optical fiber connector | Yuichi Shirasaki, Masayuki Fujise, Kenichi Asakawa | 1985-10-01 |
| 4540942 | Alternating current induction method using an annular magnetic coupling body for detecting the position of a buried submarine cable | Kazuomi Yamamura, Hideo Ishihara, Shizuo Suzuki, Yuichi Sirasaki, Kenichi Asakawa | 1985-09-10 |
| 4537530 | Marine cable burying method and device therefor | Kazuomi Yamamura, Hideo Ishihara, Hifumi Sakaguchi, Masao Morita, Toshio Izawa | 1985-08-27 |
| 4492492 | Guiding method for cable burying device and a device therefor | Toshio Izawa, Yuichi Shirasaki, Kenichi Asakawa | 1985-01-08 |
| 4438401 | System for detecting a cable buried under the seabed | Shizuo Suzuki, Yuichi Shirasaki | 1984-03-20 |
| 4384808 | Under-water cable burying device | Kazuomi Yamamura, Hifumi Sakaguchi, Kenichi Asakawa | 1983-05-24 |
| 4317079 | Buried cable locating system | Kazuomi Yamamura, Takasuke Fukui, Yuichi Shirasaki, Masayuki Fujise | 1982-02-23 |