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:
Oct. 15, 1996
Filed:
May. 22, 1995
Applicant:
Inventors:
Joseph C Topping, Austin, TX (US);
Jeffrey T Simpson, Rochester Hills, MI (US);
Assignee:
Henkel Corporation, Plymouth Meeting, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
204419 ; 204416 ; 204435 ; 422 8203 ;
Abstract
The service life of a conventional free fluoride ion sensitive electrode can be improved by shielding the outer casing of the conventional electrode against contact with the liquid composition in which the free fluoride ions concentration is to be measured, particularly when the solution is a hot acid solution containing surfactants and/or oxidizing agents, such as is normally used for cleaning aluminum beverage containers or providing a protective surface treatment to aluminum surfaces.