Granted Patent
Utility
US 4,786,341 · App. 07/038,702
Method for manufacturing concrete structure
Inventors:
Katsuro Kobatake, Hideo Katsumata, Kensuke Yagi, Tsuneo Tanaka, Tatsuo Ando
Patented Case
View Patent ↗
Granted: Nov 22, 1988
Filed: Apr 15, 1987
Inventors
Katsuro Kobatake
Hideo Katsumata
Kensuke Yagi
Tsuneo Tanaka
Tatsuo Ando
Assignees (at issue)
Mitsubishi Chemical Industries, Ltd.
Ohbayashi 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.