Granted Patent
Utility
US 6,576,451 · App. 09/645,358
Oligomers for polymerizing to produce hydrous gels entrapping microorganisms
Inventors:
Tatsuo Sumino, Naomichi Mori, Tamio Igarashi, Hiroyoshi Emori, Minoru Kayanoki, Takayuki Nakamura, Ryuichi Matsuyama, Tsutomu Minaki
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Aug 25, 2000
Inventors
Tatsuo Sumino
Naomichi Mori
Tamio Igarashi
Hiroyoshi Emori
Minoru Kayanoki
Takayuki Nakamura
Ryuichi Matsuyama
Tsutomu Minaki
Assignees (at issue)
Hitachi Plant Engineering & Construction Co., Ltd.
SHIN-NAKAMURA CHEMICAL CO., LTD.
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.