Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5628520 | Sealing material made of expanded graphite having opened thin-leaf surface structure | Masaru Fujiwara, Terumasa Yamamoto | 1997-05-13 |
| 5605341 | Knitting yarn for gland packing and gland packing made from the knitting yarn | — | 1997-02-25 |
| 5573253 | Packing rings, method for production of the packing rings, and seal device using the packing rings | Kazumasa Naitou, Shosuke Naito, Masaru Fujiwara | 1996-11-12 |
| 5549306 | Knitting yarn for gland packing and gland packing made of said knitting yarn | — | 1996-08-27 |
| 5522603 | Packing rings, method for production of the packing rings, and seal device using the packing rings | Kazumasa Naitou, Shosuke Naito, Masaru Fujiwara | 1996-06-04 |
| 5370405 | Packing | — | 1994-12-06 |
| 5308090 | Spiral wound gasket | Eiichi Hamada, Koji Shimoji, Suekichi Hangeishi, Mamoru Yashima, Keiji Okada +1 more | 1994-05-03 |
| 5269540 | Metal-covered sealing gasket having a soft, heat resistant, expandable core | Susumu Nobuchi, Akira Hashimoto | 1993-12-14 |
| 5240769 | Packing material and packing made of the same | Tomikazu Shiomi | 1993-08-31 |
| 5188376 | Gland packing and method of producing same | Shuzo Konaka, Takeshi Miyoshi | 1993-02-23 |
| 5134030 | Packing material and packing made of the same | Tomikazu Shiomi | 1992-07-28 |
| 4844479 | Structure of a gland packing box | Hiroyuki Sasakura, Takashi Ikeda | 1989-07-04 |
| 4705722 | Gland packing | Tomikazu Shiomi | 1987-11-10 |