Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6641069 | Drag washer of reel for fishing and reel for washing using the same | Hitoshi Katayama, Hiroshi Hasegawa, Toshiki Kusuyama | 2003-11-04 |
| 6489027 | High purity carbon fiber reinforced carbon composites and manufacturing apparatus for use thereof | Toshiaki Sogabe, Toshiharu Hiraoka, Masatoshi Yamaji, Naoto Ohta | 2002-12-03 |
| 6399203 | Pyrolytic carbon coated carbon fiber reinforced carbon composite and useful as components for pulling single crystal apparatus | Naoto Ohta, Toshiaki Sogabe, Masatoshi Yamaji | 2002-06-04 |
| 5160415 | Carbon electrode, and method and apparatus for the electrolysis of a hydrogen fluoride-containing molten salt with the carbon electrode | Tetsuro Tojo, Nobuatsu Watanabe | 1992-11-03 |
| 4888242 | Graphite sheet material | Koichiro Matsuo, Kazuhiro Maekawa | 1989-12-19 |
| 4461806 | Shaped articles of non-fibrous carbonaceous material | Shigeru Ikeda, Shozi Hori, Kiyohisa Eguchi, Kanji Matsuo, Hidenori Zaima +1 more | 1984-07-24 |
| 4350576 | Method of producing a graphite intercalation compound | Nobuatsu Watanabe, Jiro Ishiguro | 1982-09-21 |
| 4301026 | Antioxidant for carbonaceous material and method | Jiro Ishiguro, Nobuatsu Watanabe | 1981-11-17 |
| 4244934 | Process for producing flexible graphite product | Jiro Ishiguro, Nobuatsu Watanabe | 1981-01-13 |