Granted Patent
Utility
US 5,824,414 · App. 08/633,378
Preparation of spherical polyphenol particles
Inventors:
Shiro Kobayashi, Hiroshi Uyama, Sunao Maeda, Shinichirou Tawaki
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Apr 17, 1996
Inventors
Shiro Kobayashi
Hiroshi Uyama
Sunao Maeda
Shinichirou Tawaki
Assignees (at issue)
MITSUI CHEMICALS, INC.
Shiro Kobayashi
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.