Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6384177 | Process for producing polyurethane and polyisocyanurate | Katsumi Tokumoto, Yutaka Tamano | 2002-05-07 |
| 6384097 | Amine catalyst for producing rigid polyurethane foam | Katsumi Tokumoto, Yutaka Tamano | 2002-05-07 |
| 6307102 | Amine catalyst for producing polyurethane and polyisocyanurate | Katsumi Tokumoto, Yutaka Tamano | 2001-10-23 |
| 5591781 | Process for producing polyurethane foam with high curing rate | Hiroyuki Yoshimura, Hideaki Kisaka, Yutaka Tamano | 1997-01-07 |
| 5374666 | Amine catalyst for producing polyurethane and process for producing polyurethane | Yutaka Tamano, Masaki Ishida | 1994-12-20 |
| 5304578 | Process for producing urethane foam having a high density skin layer | Yutaka Tamano | 1994-04-19 |
| 5229430 | Amine catalyst for producing polyurethane and process for producing polyurethane | Yutaka Tamano, Masaki Ishida | 1993-07-20 |
| 5104907 | Process for producing high resilience polyurethane foam | Hiroyuki Yoshimura, Shoji Arai | 1992-04-14 |
| 5100927 | Process for producing rigid polyurethane foam | Yutaka Tamano, Masaki Ishida, Shoji Arai, Hiroyuki Yoshimura | 1992-03-31 |
| 4753658 | Erasable ink: sulphonated rubber dyed with basic dye and dissolved in organic solvent | Tatsushi Nakagawa, Takashi Shintani | 1988-06-28 |
| 4740549 | Ink composition for writing board | Takashi Shintani, Yasuhiro Sakanaka | 1988-04-26 |
| 4713083 | Alcoholic solution of sulphonic acid-containing copolymer dyed with basic dye | Tetsuo Tanaka, Yasuhiro Oda, Takashi Shintani, Noriaki Emura | 1987-12-15 |
| 4639508 | Process for producing granular composition of ethylenethiourea-chloroprene rubber | Yasuhiro Sakanaka | 1987-01-27 |
| 4612343 | Colored polymer emulsion and process for preparation thereof | Yasuhiro Oda, Takashi Shintani, Noriaki Emura | 1986-09-16 |