Issued Patents All Time
Showing 101–121 of 121 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5534648 | Process for continuously producing dimethyl carbonate | Keigo Nishihira, Shinichi Yoshida | 1996-07-09 |
| 5514829 | Process for continuously producing dimethyl carbonate | Keigo Nishihira, Shinichi Yoshida | 1996-05-07 |
| 5463109 | Process for preparing carbamates | Keigo Nishihira | 1995-10-31 |
| 5380906 | Process for preparing carbonic diester | Keigo Nishihira, Kunioki Kodama, Takayoshi Kaneko, Tetsuro Kawashita, Yuki Nishida +2 more | 1995-01-10 |
| 5315032 | Method of producing an N-hydroxycarbamate compound | Keigo Nishihira, Katsuhiko Mizutare, Masahiro Kondo | 1994-05-24 |
| 5311924 | Molten metal level control method and device for continuous casting | Kazuya Asano, Takayuki Kaji, Kazuo Arai, Michio Ibaraki, Yuki Nabeshima +6 more | 1994-05-17 |
| 5292917 | Process for purifying dimethyl carbonate | Keigo Nishihira, Shinichi Yoshida | 1994-03-08 |
| 5276200 | Method of preparing sodium formyl acetone and 4,4-dimethoxy-2-butanone | Keigo Nishihira, Masahiro Kondo | 1994-01-04 |
| 5214185 | Continuous process for preparing dimethyl carbonate | Keigo Nishihira, Shin-ichi Yoshida | 1993-05-25 |
| 5162563 | Process for preparing a diester of carboxylic acid | Keigo Nishihira, Katsuhiko Mizutare | 1992-11-10 |
| 5038890 | Oil pan structure for internal combustion engine | Toshihiro Hirai | 1991-08-13 |
| 4980724 | Developer material crossmixing apparatus | — | 1990-12-25 |
| 4949777 | Process of and apparatus for continuous casting with detection of possibility of break out | Seiji Itoyama, Kichio Tada, Tsukasa Telashima, Hiromitsu Yamanaka, Takao Yunde +2 more | 1990-08-21 |
| 4558460 | Audio apparatus for vehicle | Shigehira Nakamura, Tuneaki Sakamoto, Yoshiaki Hirakata, Tetsuo Yamagata | 1985-12-10 |
| 4551002 | Developer density detecting apparatus | Matsuyuki Aoki | 1985-11-05 |
| 4539403 | Process for the preparation of a 2-alkyl-4-amino-5-aminomethylpyrimidine | Kozo Fujii, Keigo Nishihira, Hiroyuki Sawada, Mamoru Nakai, Hiroshi Yoshida +2 more | 1985-09-03 |
| 4497720 | Method for treating metallic or ceramic surfaces at high temperatures | Hiroyuki Moriga, Masao Uchida, Koichi Iwashita | 1985-02-05 |
| 4492792 | Process for preparing 4-amino-5-dialkoxy-methylpyrimidine derivatives | Kozo Fujii, Keigo Nishihira, Hiroyuki Sawada, Mamoru Nakai, Hiroshi Yoshida +1 more | 1985-01-08 |
| 4421925 | 4-Alkoxy-1,3-dioxane-5-carbonitriles and process for preparing the same | Sumio Umemura, Kozo Fujii, Keigo Nishihira, Hiroyuki Sawada, Mamoru Nakai +2 more | 1983-12-20 |
| 4419960 | Developing agent density controlling device | Akio Okamura, Tamotsu Sakamoto | 1983-12-13 |
| 4388894 | Two stroke engine having exhaust timing control valve means | Toshio Nagata | 1983-06-21 |