Granted Patent
Utility
US 5,652,276 · App. 08/669,301
Foaming resin composition, plastic foam formed from the composition, and method for forming the plastic foam
Inventors:
Hiroshi Ando, Kensuke Kondo, Naoaki Nakanishi, Hiroshi Ito, Shigeki Hamaguchi, Kazuya Yonezawa
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Sep 5, 1996
Inventors
Hiroshi Ando
Kensuke Kondo
Naoaki Nakanishi
Hiroshi Ito
Shigeki Hamaguchi
Kazuya Yonezawa
Assignee (at issue)
Kanegafuchi Chemical Industry 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.