Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8030381 | Granular additive composition | Kenji Kimura | 2011-10-04 |
| 5525725 | Process for producing a high purity caprolactam | Yasuhiko Higashio, Keisuke Sugita, Hideki Doi, Masanobu Matsubara | 1996-06-11 |
| 5502184 | Process for producing .epsilon. -caprolactam | Hideto Tojima, Tomokazu Nakamura, Masaru Kitamura | 1996-03-26 |
| 5459261 | Process for producing a high purity caprolactam | Yasuhiko Higashio, Keisuke Sugita, Hideki Doi, Masanobu Matsubara | 1995-10-17 |
| 5362870 | Process for producing a high purity caprolactam | Yasuhiko Higashio, Keisuke Sugita, Hideki Doi, Masanobu Matsubara | 1994-11-08 |
| 5354859 | .epsilon.-caprolactam | Hiroshi Ichihashi, Masaru Kitamura, Eiji Tasaka | 1994-10-11 |
| 5315039 | Method for inhibiting thermal decomposition of cycloalkanone oximes | Masaru Kitamura, Yasuhiko Higashio | 1994-05-24 |
| 5304643 | Process for producing epsilon-caprolactam | Masaru Kitamura, Yasuhiko Higashio | 1994-04-19 |