HJ

Hirofumi Johoji

SC Sumitomo Chemical: 15 patents #265 of 4,033Top 7%
TT Tokyo Institute Of Technology: 2 patents #232 of 1,159Top 25%
Overall (All Time): #324,636 of 4,157,543Top 8%
15
Patents All Time

Issued Patents All Time

Showing 1–15 of 15 patents

Patent #TitleCo-InventorsDate
8431663 Polymer and method for producing same Kohtaro Osakada, Daisuke Takeuchi, Osamu Ihata 2013-04-30
8389656 Copolymer and method for producing same Kohtaro Osakada, Daisuke Takeuchi, Osamu Ihata, Kenji Sogo 2013-03-05
6858676 Olefin derived copolymer Hidetake Hozumi, Atsuko Ogawa, Tadaaki Nishiyama 2005-02-22
6632541 Olefin-based copolymer composition Hidetake Hozumi, Tadaaki Nishiyama 2003-10-14
6562907 Olefin polymer and thermoplastic resin composition Hidetake Hozumi, Tadaaki Nishiyama 2003-05-13
6525138 Thermoplastic resin composition Hidetake Hozumi, Tadaaki Nishiyama 2003-02-25
6458901 Propylenic copolymer and thermoplastic resin composition Keisaku Yamamoto, Hidetake Hozumi 2002-10-01
6331593 Resin composition pellet Toshiyuki Kuwabara 2001-12-18
6300447 Ethylene-.alpha.-olefin-nonconjugated polyene random copolymer Toshiyuki Kuwabara, Atsuko Ogawa 2001-10-09
6121401 Propylene copolymer Keisaku Yamamoto, Hidetake Hozumi 2000-09-19
6084046 Copolymer and copolymer composition Tsuyoshi Takei, Tadaaki Nishiyama 2000-07-04
5602223 Ethylene-.alpha.-olefin copolymer and a molded article therefor Toshio Sasaki, Kohzoh Miyazaki, Hiroyuki Shiraishi, Yuji Shigematsu, Akio Uemura +1 more 1997-02-11
5508364 Process for polymerizing ethylene at high temperature under high pressure Toshio Sasaki, Hiroyuki Shiraishi, Kohzoh Miyazaki, Toshimi Sato, Yuji Shigematsu 1996-04-16
5378778 Liquid catalyst component, catalyst system containing the same, and process for producing ethylene-.alpha.-olefin copolymers using the catalyst system Hiroyuki Shiraishi, Toshio Sasaki, Kiyoshi Kawai 1995-01-03
5258476 Process for producing ethylene-.alpha.-olefin copolymers Toshio Sasaki, Hiroyuki Shiraishi, Yoshihiro Miyoshi 1993-11-02