Granted Patent
Utility
US 5,625,139 · App. 08/544,736
Method of measuring concentration of nonpolar gases such as carbon dioxide by means of a polymer-based sensor and concentration sensor structure
Inventor:
Lars Stormbom
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Oct 18, 1995
Inventor
Lars Stormbom
Assignee (at issue)
Vaisala Oy
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.