Granted Patent
Utility
US 5,928,661 · App. 08/864,990
Controlled release composition containing volatile compound
Inventors:
Masao Fujita, Shuji Hirohama, Yoshihiro Hayashi, Shinichi Igarashi, Yuichi Mizukami, Yasushi Sekiyama, Asami Takata
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: May 29, 1997
Inventors
Masao Fujita
Shuji Hirohama
Yoshihiro Hayashi
Shinichi Igarashi
Yuichi Mizukami
Yasushi Sekiyama
Asami Takata
Assignees (at issue)
RENGO CO., LTD.
Green Cross 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.