Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6946553 | Process for producing ε-caprolactam and catalyst for the production | Tsuyoshi Matsushita, Hiroshi Ichihashi | 2005-09-20 |
| 6531595 | Method for producing &egr;-caprolactam and reactor for the method | Wolfgang Holderich, Gerd Dahlhoff, Hiroshi Ichihashi | 2003-03-11 |
| 6303099 | Process for producing pentacyl-type crystalline zeolites and a process for producing .epsilon.-caprolactam using the same | Hiroshi Ichihashi, Makoto Yako | 2001-10-16 |
| 5573989 | Process for producing olefin oxides | Toshikazu Yagi | 1996-11-12 |
| 5525741 | Process for producing olefin oxides | Toshikazu Yagi | 1996-06-11 |
| 5525725 | Process for producing a high purity caprolactam | Yasuhiko Higashio, Hiroshi Kajikuri, Hideki Doi, Masanobu Matsubara | 1996-06-11 |
| 5459261 | Process for producing a high purity caprolactam | Yasuhiko Higashio, Hiroshi Kajikuri, Hideki Doi, Masanobu Matsubara | 1995-10-17 |
| 5362870 | Process for producing a high purity caprolactam | Yasuhiko Higashio, Hiroshi Kajikuri, Hideki Doi, Masanobu Matsubara | 1994-11-08 |