Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8551213 | Method of coal gasification and direct ironmaking and system therefor | Masataka Tateishi | 2013-10-08 |
| RE41136 | Process for preparing 2,6-dialkylnaphthalene | Koji Yamamoto, Ajit V. Sapre, John P. McWilliams, Susan Patricia Donnelly | 2010-02-16 |
| RE39222 | Process for preparing 2,6-dialkylnaphthalene | Koji Yamamoto, Ajit V. Sapre, John P. McWilliams, Susan Patricia Donnelly | 2006-08-01 |
| 6894202 | Method for producing 2,6-dimethylnaphthalene | Koji Yamamoto, Seiichi Yamamoto, Takeharu Tanaka, Shingo Yoshida | 2005-05-17 |
| 6717009 | Method for making high-purity naphthalenedicarboxylic acid | Tomoki Uemura, Koji Yamamoto | 2004-04-06 |
| 6706939 | Method for concentrating 2,6-dimethylnaphthalene | Noboru Nakao, Koji Yamamoto | 2004-03-16 |
| 6525235 | Method for manufacturing 2,6-dimethylnaphthalene | Shingo Yoshida, Tomoki Uemura, Koji Yamamoto | 2003-02-25 |
| 6153808 | Method for separating alkylnaphthalene | Koji Yamamoto, Shingo Yoshida, Yonezo Matsumoto, Hisako Nakashima, Midori Kumazawa +1 more | 2000-11-28 |
| 6121501 | Process for preparing 2,6-dialkylnaphthalene | Koji Yamamoto, Ajit V. Sapre, John Paul Mc Williams, Susan Patricia Donnelly | 2000-09-19 |
| 6018086 | Process for preparing 2,6-dialkylnaphthalene | Koji Yamamoto, Ajit V. Sapre, John Paul Mc Williams, Susan Patricia Donnelly | 2000-01-25 |
| 6018087 | Isomerization of dimethylnaphthalene to produce 2,6-dimethylnaphthalene | Koji Yamamoto, Shingo Yoshida, Seiichi Yamamoto, Ajit V. Sapre, John Paul Mc Williams +2 more | 2000-01-25 |
| 6011190 | Process for preparing dialkylnaphthalene | Koji Yamamoto, Ajit V. Sapre, John P. McWilliams | 2000-01-04 |
| 5844064 | Process for preparing dialkylnaphthalene | Koji Yamamoto, John P. McWilliams, Robert G. Bundens | 1998-12-01 |
| 5744670 | Process for preparing dialkylnaphthalene | Koji Yamamoto, John P. McWilliams, Robert G. Bundens | 1998-04-28 |
| 5723711 | Process for preparing 2-methylnaphthalene | Koji Yamamoto, John P. McWilliams, Ajit V. Sapre | 1998-03-03 |