The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 1989
Filed:
May. 26, 1988
Applicant:
Inventors:
Mitchell E Doty, Chalfont, PA (US);
Ferenc J Schmidt, Bryn Mawr, PA (US);
Assignee:
Ametek, Inc., Harleysville, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 23 ; 136255 ; 136291 ; 357 15 ; 357 30 ; 324 715 ; 338 34 ;
Abstract
A gas sensor comprises a photovoltaic cell which, upon exposure to light, develops a photovoltage or photocurrent which varies as a function of the type of gas sorbed. The cell includes in order a conductor, an N-type light-absorbing semiconductor, and a thin light-transmitting gas-absorbing metal Schottky layer having electrical properties which vary with the type of gas sorbed therein.