Granted Patent
Utility
US 5,390,530 · App. 08/131,611
Leak detection method for gas, steam or the like based, in part, on the measurement of wind direction and velocity
Inventors:
Akira Hosonuma, Teruyuki Onodera, Saburoh Takahashi, Kunio Sakashita, Yoshinori Hiroshige
Patented Case
View Patent ↗
Granted: Feb 21, 1995
Filed: Oct 5, 1993
Inventors
Akira Hosonuma
Teruyuki Onodera
Saburoh Takahashi
Kunio Sakashita
Yoshinori Hiroshige
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.