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:
Feb. 05, 1991
Filed:
Feb. 21, 1990
Applicant:
Inventors:
Fred C Sittler, Victoria, MN (US);
Radhakrishna M Neti, Brea, CA (US);
Adrian C Toy, Eden Prairie, MN (US);
Assignee:
Rosemount Inc., Eden Prairie, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204430 ; 73335 ; 733365 ; 20415322 ; 2042 / ;
Abstract
A solid state, thin film moisture sensing element is disclosed. The sensing element is fabricated by thin film deposition of at least a pair of two layer electrodes on an insulating surface. The active surface of the element is then coated with a layer of hygroscopic material and placed in a diffusion limiting housing to complete the sensing element assembly.