Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7762105 | Backup structure for an uprising pipe or downfalling pipe in a vacuum degassing apparatus | Shinji Takeshita, Sei Nagano | 2010-07-27 |
| 6294005 | Vacuum gas releasing system | Shigekuni Inoue, Yusuke Takei, Kosei Uchino | 2001-09-25 |
| RE36082 | Vacuum degassing method and its apparatus | Fumiaki Saito, Masaaki Yoshikawa, Misao Okada, Shinsuke Nakajima | 1999-02-09 |
| 5849058 | Refining method for molten glass and an apparatus for refining molten glass | Shinji Takeshita, Chikao Tanaka | 1998-12-15 |
| 5538579 | Method of processing a plurality of glass plates or the like into a circular shape or a method of perforating a plurality of the same material | Yoichi Ozawa, Ikuo Nagasawa, Masabumi Ito | 1996-07-23 |
| 5316563 | Vacuum degassing method and its apparatus | Fumiaki Saito, Masaaki Yoshikawa, Misao Okada, Shinsuke Nakajima | 1994-05-31 |
| 5123214 | Method of grinding a plate-like material and apparatus for carrying out the method | Mituhiro Higashizaki, Nobuo Hasegawa | 1992-06-23 |
| 5032238 | Method of and apparatus for electropolishing and grinding | Ikuo Nagasawa, Shigeru Muramoto, Naohiro Hotta | 1991-07-16 |