Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9562827 | Measuring method of longitudinal distribution of bending loss of optical fiber, measuring method of longitudinal distribution of actual bending loss value of optical fiber, test method of optical line, manufacturing method of optical fiber cable, manufacturing method of optical fiber cord, and manufacturing method of optical fiber | Shoji Tanigawa, Itaru Ishida, Shoichiro Matsuo, Kazuhide NAKAJIMA, Tomoya Shimizu +2 more | 2017-02-07 |
| 9175946 | Measuring method of hole diameter, hole position, hole surface roughness, or bending loss of holey optical fiber, manufacturing method of holey optical fiber, and test method of optical line of holey optical fiber | Itaru Ishida, Shoji Tanigawa, Shoichiro Matsuo, Kazuhide NAKAJIMA, Tomoya Shimizu +2 more | 2015-11-03 |
| 9075185 | Hole-assisted optical fiber | Naomi Kumano, Iwao Shimotakahara, Ryuichi Sugizaki, Takeshi Yagi, Tomoya Shimizu +3 more | 2015-07-07 |
| 8800323 | Method of sealing air holes in an optical fiber | Yoshinori Kurosawa, Bing Yao, Kazumasa Ohsono, Masao Tachikura, Hisanori Nakai +2 more | 2014-08-12 |
| 8702317 | Optical connector and method for assembling same | Ryo Koyama, Kazuhide NAKAJIMA, Masaaki Takaya, Masatoshi Shimizu, Kyoichi Nakamizo | 2014-04-22 |
| 8181487 | Optical fiber preform manufacturing method | Ryuichi Sugizaki, Naomi Kumano, Iwao Shimotakahara, Harumi Inaba, Takeshi Yagi +2 more | 2012-05-22 |
| 7658550 | Optical fiber, optical fiber connecting method, and optical connector | Yoshinori Kurosawa, Bing Yao, Kazumasa Ohsono, Masao Tachikura, Hisanori Nakai +2 more | 2010-02-09 |
| 7376315 | Optical fiber, optical fiber connecting method, and optical connector | Yoshinori Kurosawa, Bing Yao, Kazumasa Ohsono, Masao Tachikura, Hisanori Nakai +2 more | 2008-05-20 |
| 7349610 | Optical fiber coiled cord | Kazumasa Ohsono, Masao Tachikura, Yoshinori Kurosawa, Yoshikazu Namekawa, Kenji Kawase +2 more | 2008-03-25 |
| 6366348 | Optical fiber distortion measuring apparatus and optical fiber distortion measuring method | Yasushi Sato, Haruyoshi Uchiyama | 2002-04-02 |
| 6335788 | Optical-fiber characteristics measuring apparatus | Haruyoshi Uchiyama | 2002-01-01 |
| 5880824 | Optical fiber strain measuring apparatus | Haruyoshi Uchiyama, Zhixien Li, Yasushi Satoh | 1999-03-09 |
| 5686986 | Optical fiber characteristic measuring device | Zhixien Li, Yasushi Sato, Shoji Adachi, Kaoru Shimizu | 1997-11-11 |
| 5136673 | Optical cable and its manufacturing method | Nobuyuki Yoshizawa, Tsuneo Horiguchi, Koushi Ishihara, Tetsuro Yabuta, Hidenobu Tada | 1992-08-04 |