Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5837334 | Large sized quartz glass tube, large scale quartz glass preform, process for manufacturing the same and quartz glass optical fiber | Masaaki Aoyama, Gerhart Vilsmeier | 1998-11-17 |
| 5785729 | Method for manufacturing large-sized quartz glass tube | Masaaki Aoyama, Gerhart Vilsmeier | 1998-07-28 |
| 5769921 | Method of producing quartz glass body | — | 1998-06-23 |
| 5540059 | Method and apparatus for supplying gaseous raw material | — | 1996-07-30 |
| 5266596 | L- or DL-threo-3-(3,4-dihydroxyphenyl)serine for the treatment of urinary incontinence | Shuji Takaori | 1993-11-30 |
| 4874416 | Base material of optical fibers and a method for the preparation thereof | Kazuo Koya | 1989-10-17 |
| 4772644 | Method for resin encapsulation of a semiconductor device and a resin composition therefor | Kunio Itoh, Tetuo Yoshida, Kazuo Koya | 1988-09-20 |
| 4690504 | Quartz glass-made optical fibers and a method for the preparation thereof | Kazuo Koya | 1987-09-01 |
| 4608071 | Method for reducing diameter of a glass rod or tube by drawing | Kazuo Koya, Syouji Hosino | 1986-08-26 |