Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9540459 | Production method of olefin polymer and olefin polymerization catalyst | Ikuko Ebisawa, Hideo Kitagawa, Takashi Yukita, Masahiro Yamashita, Kouji Takeda | 2017-01-10 |
| 9315602 | Method for producing olefin polymer | Masahiro Yamashita, Takashi Yukita | 2016-04-19 |
| 8716418 | Process for producing syndiotactic α-olefin polymer | Masayoshi Yamamoto, Takashi Yukita, Masahiro Yamashita | 2014-05-06 |
| 8293856 | Process for preparing olefin polymer using mixed catalyst | Takashi Yukita, Masahiro Yamashita, Nobukazu Yamahira, Wataru Yamada | 2012-10-23 |
| 7678934 | Propylene copolymer, polypropylene composition and uses thereof, transition metal compound and olefin polymerization catalyst | Naritoshi Hirota, Munehito Funaya, Koji Kawai, Nobuo Kawahara | 2010-03-16 |
| 7619030 | Automobile part of polypropylene resin composition | Koji Kawai, Masahiro Yamashita, Yasushi Tohi, Keita Itakura, Ikunori Sakai +5 more | 2009-11-17 |
| 7488789 | Propylene copolymer, polypropylene composition, and uses thereof, transition metal compounds and catalyst for olefin polymerization | Shigenobu Ikenaga, Keiji Okada, Hiroshi Hoya, Norihide Inoue, Naritoshi Hirota +6 more | 2009-02-10 |
| 7449533 | Metallocene compound, process for preparing metallocene compound, olefin polymerization catalyst, process for preparing polyolefin, and polyolefin | Koji Kawai, Masahiro Yamashita, Yasushi Tohi, Nobuo Kawahara, Kenji Michiue +1 more | 2008-11-11 |
| 7393965 | Crosslinked metallocene compound for olefin polymerization and method of polymerizing olefin with the same | Yasushi Tohi, Koji Endo, Naomi Urakawa, Yuichi Yamamura, Koji Kawai | 2008-07-01 |
| 7081493 | Automotive part made of polypropylene resin composition | Koji Kawai, Masahiro Yamashita, Yasushi Tohi, Keita Itakura, Ikunori Sakai +5 more | 2006-07-25 |
| 6939928 | Metallocene compound, process for producing metallocene compound, olefin polymerization catalyst, process for producing polyolefin, and polyolefin | Koji Kawai, Masahiro Yamashita, Yasushi Tohi, Nobuo Kawahara, Kenji Michiue +1 more | 2005-09-06 |