Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6946553 | Process for producing ε-caprolactam and catalyst for the production | Keisuke Sugita, Tsuyoshi Matsushita | 2005-09-20 |
| 6531595 | Method for producing &egr;-caprolactam and reactor for the method | Wolfgang Holderich, Gerd Dahlhoff, Keisuke Sugita | 2003-03-11 |
| 6482945 | Process for producing epsilon-caprolactam and apparatus for the process | Wolfgang Holderich, Gerd Dahlhoff, Andre Sbresny | 2002-11-19 |
| 6344586 | Process for producing adipic acid | Kazuhide Tanaka | 2002-02-05 |
| 6303099 | Process for producing pentacyl-type crystalline zeolites and a process for producing .epsilon.-caprolactam using the same | Keisuke Sugita, Makoto Yako | 2001-10-16 |
| 5403801 | Process for producing .epsilon.-caprolactam and activating solid catalysts therefor | Masaru Kitamura, Hideto Tojima | 1995-04-04 |
| 5354859 | .epsilon.-caprolactam | Masaru Kitamura, Hiroshi Kajikuri, Eiji Tasaka | 1994-10-11 |
| 5212302 | Process for producing epsilon-caprolactam and activating solid catalysts therefor | Masaru Kitamura, Hideto Tojima | 1993-05-18 |
| 5071802 | Regeneration of catalysts by burning in the presence of alcohols | Shinkichi Shimizu, Takayasu Niwa, Nobuyuki Abe, Masanori Doba, Akira Iguchi +1 more | 1991-12-10 |
| 5066630 | Method for removing nitrogen-containing organic compounds from crystalline metallosilicate | Masaru Kitamura, Gohfu Suzukamo | 1991-11-19 |
| 4992252 | Method for production of hydroxylammonium salt | Kikuo Takeda, Hiroshi Yoshioka | 1991-02-12 |
| 4968793 | Process for producing .epsilon.-caprolactam | Masaru Kitamura, Gohfu Suzukamo, Yasuo Nakamura | 1990-11-06 |
| 4665274 | Method for producing cycloolefins | Hiroshi Yoshioka | 1987-05-12 |
| 4575572 | Method for producing cycloolefins | Hiroshi Yoshioka | 1986-03-11 |
| 4565801 | Heteropoly-acids and their production and use | Shinkichi Shimizu, Koichi Nagai | 1986-01-21 |
| 4306088 | Production of methacrolein | Shuzo Nakamura, Yoshihiko Nagaoka, Koichi Nagai | 1981-12-15 |