Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10359701 | Material for forming underlayer film for lithography, composition for forming underlayer film for lithography, underlayer film for lithography and pattern forming method | Kana OKADA, Takashi MAKINOSHIMA, Masatoshi Echigo, Go Higashihara | 2019-07-23 |
| 10338471 | Composition for forming underlayer film for lithography, underlayer film for lithography and pattern forming method | Kana OKADA, Takashi MAKINOSHIMA, Masatoshi Echigo, Go Higashihara | 2019-07-02 |
| 9725551 | Aromatic hydrocarbon formaldehyde resin, modified aromatic hydrocarbon formaldehyde resin and epoxy resin, and method for producing these | Go Higashihara | 2017-08-08 |
| 9562130 | Aromatic hydrocarbon formaldehyde resin, modified aromatic hydrocarbon formaldehyde resin and epoxy resin, and methods for producing these | Go Higashihara | 2017-02-07 |
| 8703010 | Curing agent for epoxy resins and epoxy resin compositions | Ryuji Ideno, Takao Ota | 2014-04-22 |
| 8034962 | Acid anhydride ester and composition thereof, and heat-curable resin composition and cured product thereof | Tomohiro Sugawara, Takeshi Koyama, Takashi Sato, Shuichi Ueno | 2011-10-11 |
| 7569708 | Liquid cyclohexane-tricarboxylic acid anhydride | — | 2009-08-04 |
| 7569707 | Production method of highly pure pyromellitic dianhydride | Hiroshi Ogawa, Masashi Yabuno, Masato Inari | 2009-08-04 |
| 7323522 | Cyclohexanetricarboxylic monoester and its use | Ryuji Ideno, Takeshi Koyama, Takao Ota | 2008-01-29 |
| 7071362 | Process for producing alicyclic aldehydes | Tomohiro Sugawara, Fumiya Zaima, Kinji Kato, Masato Inari | 2006-07-04 |
| 6888023 | Process for producing pyromellitic acid | Kazuo Tanaka, Hiroshi Ogawa, Ikutraro Maruki | 2005-05-03 |
| 6579990 | Process for producing refined pyromellitic acid and refined pyromellitic anhydride | Kazuo Tanaka, Kengi Nakaya | 2003-06-17 |
| 6472540 | Process for producing &egr;-caprolactone | Kazuo Tanaka, Hiroshi Ogawa | 2002-10-29 |
| 6458994 | Process for producing aromatic polycarboxylic acid | Etsuo Urabe, Masashi Yabuno, Hiroshi Ogawa, Kazuo Tanaka | 2002-10-01 |
| 5994565 | Process for producing purified .epsilon.-caprolactone | Kazuo Tanaka, Hiroshi Ogawa | 1999-11-30 |