Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5241558 | Vertical glass melting furnace | Yukihito Nagashima, Kouichi Sakaguchi, Shigeki Nakagaki, Yoshiyuki Inaka, Takashi Sunada +1 more | 1993-08-31 |
| 4927446 | Glass melting furnace | Yukihito Nagashima | 1990-05-22 |
| 4824806 | Glass fibers having low dielectric constant | Koji Yokoi, Mitsugi Yoshiyagawa | 1989-04-25 |
| 4778509 | Furnace for cooling molten glass | Hiroshi Samejima, Akira Hoshino | 1988-10-18 |
| 4693739 | Method for producing glass bubbles | Tsutomu Sawano, Takemi Saijo | 1987-09-15 |
| 4652293 | Method of cooling molten glass | Hiroshi Samejima, Akira Hoshino | 1987-03-24 |
| 4252754 | Process for manufacturing glass raw material granular pellets | Kunio Nakaguchi | 1981-02-24 |