Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9588287 | Multimode optical fiber | — | 2017-03-07 |
| 9031371 | Multi-mode optical fiber | Kazuhiro Yonezawa | 2015-05-12 |
| 8977093 | Multimode optical fiber | — | 2015-03-10 |
| 8824848 | Multimode optical fiber including a core and a cladding | Tadashi Enomoto, Kazuhiro Yonezawa | 2014-09-02 |
| 8798420 | Multi-mode optical fiber | Kazuhiro Yonezawa | 2014-08-05 |
| 8565567 | Multi-mode optical fiber | Kazuhiro Yonezawa | 2013-10-22 |
| 8565566 | Multi-mode optical fiber | Kazuhiro Yonezawa | 2013-10-22 |
| 8011209 | Method of making glass | Keisei MORITA | 2011-09-06 |
| 7886561 | Method for drawing glass parent material and drawing machine for use therein | Kiichiro Kawasaki | 2011-02-15 |
| 6698249 | Porous glass base material production device and method | Kanta Yagi, Wataru Kikuchi | 2004-03-02 |
| 6625360 | Single-mode optical fibers and fabrication methods thereof | Takeshi Kyogoku, Masumi Ito, Takehiko Kito | 2003-09-23 |
| 5895515 | Increasing a fluorine compound flow rate during a VAD process | Shinji Ishikawa, Masumi Ito | 1999-04-20 |
| 5788734 | Method for drawing glass preform for optical fiber | Toshio Danzuka, Yuichi Ohga, Masumi Ito, Katsuzo Mukai | 1998-08-04 |
| 5755849 | Method for elongating glass preform | Yuichi Ohga, Masumi Ito, Toshio Danzuka, Tatsuhiko Saito | 1998-05-26 |
| 5693115 | Process for production of glass preform for optical fiber including consolidating in a furnace with a temperature gradient | Masumi Ito, Toshio Danzuka, Yuichi Ohga, Ichiro Tsuchiya | 1997-12-02 |
| 5676725 | Method of manufacturing single-mode optical fiber | Masumi Ito, Toshio Danzuka | 1997-10-14 |
| 5674306 | Method and apparatus for drawing glass preform for optical fiber | Toshio Danzuka, Yuichi Ohga, Katsuzo Mukai | 1997-10-07 |
| 5513983 | Apparatus for vitrifying soot preform for optical fiber | Masumi Ito, Ichiro Tuchiya, Toshio Danzuka, Yuichi Ohga | 1996-05-07 |
| RE35222 | Optical fiber component optical coupler and method of producing thereof | Masumi Ito, Masayuki Shigematsu, Hiroo Kanamori, Hisasi Izumita | 1996-04-30 |
| 5368887 | Process for producing thin glass film by sol-gel method | Masumi Ito, Hiroo Kanamori | 1994-11-29 |
| 5314518 | Method for producing glass preform for optical fiber | Masumi Ito, Shinji Ishikawa | 1994-05-24 |
| 5243677 | Quartz optical waveguide and method for producing the same | Hiroo Kanamori, Masumi Ito, Shinji Ishikawa, Haruhiko Aikawa | 1993-09-07 |
| 5224185 | Optical switch | Masumi Ito, Hiroo Kanamori | 1993-06-29 |
| 5202947 | Optical fiber component optical coupler and method of producing thereof | Masumi Ito, Masayuki Shigematsu, Hiroo Kanamori, Hisasi Izumita | 1993-04-13 |
| 5193137 | Quartz optical waveguide and method for producing the same | Hiroo Kanamori, Masumi Ito, Shinji Ishikawa, Haruhiko Aikawa | 1993-03-09 |