Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12194442 | Gas desulfurizing agent and desulfurizing method | Shimpei Norioka, Hirofumi Ohtsuka | 2025-01-14 |
| 10814312 | Desulfurizing agent for gases and gas desulfurization method | Shimpei Norioka, Susumu Takami, Hirofumi Ohtsuka | 2020-10-27 |
| 7371706 | Catalyst for removing hydrocarbons from exhaust gas and method for purification of exhaust gas | Hirofumi Ohtsuka, Takeshi Tabata, Takatoshi Nakahira, Masataka Masuda | 2008-05-13 |
| 7364712 | Catalyst for purifying methane-containing waste gas and method of purifying methane-containing waste gas | Hirofumi Ohtsuka | 2008-04-29 |
| 6960672 | Processes for producing alkyl ester of fatty acid | Masahide Nakayama, Keiichi Tsuto, Tsutomu Sakai, Ayato Kawashima, Hirohisa Kitagawa | 2005-11-01 |
| 6887446 | Catalyst for removing hydrocarbons from exhaust gas and method for purification of exhaust gas | Hirofumi Ohtsuka, Takeshi Tabata, Takatoshi Nakahira, Masataka Masuda | 2005-05-03 |
| 6602481 | Catalyst for removing hydrocarbons from exhaust gas and method for clarification of exhaust gas | Hirofumi Ohtsuka, Takeshi Tabata, Takatoshi Nakahira, Masataka Masuda | 2003-08-05 |
| 6379435 | Adsorbing device, method of deodorizing therewith, and method of supplying high concentration oxygen | Takeshi Fukunaga, Takuya Noro | 2002-04-30 |
| 6090959 | Method of producing fatty acid lower alkylester from fat and oil | Keiichi Tsuto | 2000-07-18 |