Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12343708 | Method for producing a catalytically active multi-element oxide containing the elements Mo, W, V and Cu | Samira PARISHAN, Christian Walsdorff, Patrick HUBACH, Tobias WEINLAND | 2025-07-01 |
| 10682631 | Multimetal oxide compositions comprising Mo, Bi, Fe and Cu | Christian Walsdorff, Klaus Joachim Mueller-Engel, Cornelia Katharina Dobner, Ulrich Hammon | 2020-06-16 |
| 9695099 | Process for preparing acrylic acid | Yong Liu, Martin Dieterle, Nicolai Tonio Woerz, Andrei-Nicolae Parvulescu, Michael Lejkowski +2 more | 2017-07-04 |
| 9540305 | Process for preparing acrylic acid using an alkali metal-free and alkaline earth metal-free zeolitic material | Andrei-Nicolae Parvulescu, Armin LANGE DE OLIVEIRA, Stephan Schunk, Nicolai Tonio Woerz, Marco Hartmann +3 more | 2017-01-10 |
| 9446390 | Process for preparing acrylic acid using an aluminum-free zeolitic material | Andrei-Nicolae Parvulescu, Armin LANGE DE OLIVEIRA, Michael Lejkowski, Nicolai Tonio Woerz, Marco Hartmann +4 more | 2016-09-20 |
| 8119556 | Production method of primary amines and catalysts for producing primary amines | Yoshiaki Yamamoto | 2012-02-21 |
| 7915452 | Process for producing highly purified xyltlenediamine | — | 2011-03-29 |
| 7785556 | Method of recovering ammonia | Fumio Tanaka, Takuji Shitara | 2010-08-31 |
| 7767859 | Production method of primary amines and catalysts for producing primary amines | Yoshiaki Yamamoto | 2010-08-03 |
| 7588721 | Method for storing xylylenediamine | Kazumi Tanaka | 2009-09-15 |
| 7119230 | Process for production of xylylenediamine and/or cyanobenzylamine | Takuji Shitara | 2006-10-10 |
| 6984758 | Purification of 1,3-bis(aminomethyl)cyclohexane by distillation | Kuniaki Muneyasu, Hiroshi Watanabe | 2006-01-10 |
| 6894192 | Process for production of xylylenediamine | — | 2005-05-17 |
| 6881864 | Production method of xylylenediamine | Kazushi Gouroku | 2005-04-19 |
| 6646163 | Method for producing high purity xylylenediamine | Kenichi Nakamura, Takuji Shitara | 2003-11-11 |
| 6509490 | Method of purifying isophthalonitrile | Susumu Otsuka, Takuji Shitara, Fumisada Kosuge | 2003-01-21 |
| 6476269 | Method for producing xylylenediamine | Kenichi Nakamura, Susumu {overscore (O)}tsuka, Fumisada Kosuge, Takuji Shitara | 2002-11-05 |