Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6156476 | Positive photoresist composition | Naoki Takeyama, Hiromi Ueki, Takehiro Kusumoto, Yuko Nakano | 2000-12-05 |
| 6101068 | MR composite-type thin-film magnetic head having an upper pole with a high saturation magnetic flux density and an intermediate pole with a high resistivity | Shigekazu Ohtomo, Shuji Sudo, Kuniaki Yoshimura, Hideji Takahashi | 2000-08-08 |
| 5846688 | Photoresist composition | Nobuhito Fukui, Naoki Takeyama, Takehiro Kusumoto, Yuko Yako, Shigeki Yamamoto | 1998-12-08 |
| 5800966 | Positive photoresist composition | Naoki Takeyama, Hiromi Ueki, Takehiro Kusumoto | 1998-09-01 |
| 5585218 | Photoresist composition containing alkyletherified polyvinylphenol | Yuko Nakano, Naoki Takeyama, Takehiro Kusumoto, Hiromi Oka | 1996-12-17 |
| 5420331 | Cyclic carbonate compounds, method for producing the same and positive photoresist composition using the same | Naoki Takeyama, Hiromi Ueki, Takehiro Kusumoto | 1995-05-30 |
| 5397679 | Cyclic carbonate compounds, method for producing the same and positive photoresist composition using the same | Naoki Takeyama, Hiromi Ueki, Takehiro Kusumoto | 1995-03-14 |
| 5395727 | Positive resist composition containing a novolak resin made from an aldehyde and dimer of isopropenyl phenol | Yasunori Uetani, Haruyoshi Osaki, Naoki Takeyama, Hiromi Ueki, Takehiro Kusumoto | 1995-03-07 |
| 5304456 | Negative photoresist composition | Hiromi Ueki, Naoki Takeyama, Takehiro Kusumoto | 1994-04-19 |
| 5235068 | Process for producing acylaromatic compounds | Masayoshi Minai, Michitada Kondo, Seiichi Kai, Takayuki Higashii | 1993-08-10 |
| 4957867 | Production of cyclopentenones by enzyme resolution | Masayoshi Minai, Takayuki Higashii, Michitada; Kondo, Seiichi Kai | 1990-09-18 |
| 4812585 | Process for producing 2-aceylfuran derivatives | Michitada Kondo, Masayoshi Minai, Seiichi Kai, Takayuki Higashii | 1989-03-14 |
| 4714782 | Process for preparing optically active 4-hydroxy-2-cyclopentenones | Masayoshi Minai | 1987-12-22 |
| 4683323 | Method for inversion of optically active 4-hydroxy-2-cyclopentenones | Masayoshi Minai | 1987-07-28 |
| 4596943 | Shadow mask for a color picture tube | Eiichi Akiyoshi | 1986-06-24 |
| 4352941 | Process for purification of phenylhydrazine | Shinichi Hasegawa, Hiroshige Tomita | 1982-10-05 |
| 4336109 | Method for the recovery of acetone | Hirokazu Hosaka, Kenji Tanimoto, Kunihiko Tanaka, Toshiharu Morita, Katsuyuki Shiota +1 more | 1982-06-22 |
| 4308110 | Process for separation and purification of dihydric phenols | Hirokazu Hosaka, Kunihiko Tanaka, Toshiharu Morita, Katsuyuki Shiota | 1981-12-29 |