Granted Patent
Utility
US 6,506,305 · App. 09/866,227
Methods of isolating urea, urea compositions and methods for producing the same
Inventors:
Minoru Morita, Atsushi Serizawa, Wataru Motsuchi, Haruyoshi Yamamoto, Masanori Kotani, Yoriko Yamane
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: May 25, 2001
Inventors
Minoru Morita
Atsushi Serizawa
Wataru Motsuchi
Haruyoshi Yamamoto
Masanori Kotani
Yoriko Yamane
Assignee (at issue)
SNOW BRAND MILK PRODUCTS 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.