Granted Patent
Utility
US 5,371,302 · App. 08/045,204
Process for preparing prilled bisphenol A
Inventors:
Hiroshi Yanai, Tadayoshi Matsuo, Masanori Nagase, Tsohikazu Maruyama, Toshihiko Furukawa, Katsuhiko Sakura, Yoshiaki Matsui, Takamasa Minami, Nobuo Moriya, Sachio Asaoka, Kouji Sakashita, Nobuyuki Suda, Keiji Shimoda, Susumu Yamamoto, Makoto Nomura
Patented Case
View Patent ↗
Granted: Dec 6, 1994
Filed: Apr 13, 1993
Inventors
Hiroshi Yanai
Tadayoshi Matsuo
Masanori Nagase
Tsohikazu Maruyama
Toshihiko Furukawa
Katsuhiko Sakura
Yoshiaki Matsui
Takamasa Minami
Nobuo Moriya
Sachio Asaoka
Kouji Sakashita
Nobuyuki Suda
Keiji Shimoda
Susumu Yamamoto
Makoto Nomura
Assignees (at issue)
NIPPON STEEL CHEMICAL CO., LTD.
CHIYODA CORPORATION
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.