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. 27, 1978
Filed:
Apr. 13, 1976
Applicant:
Inventor:
Eftichios Van Vlahakis, Northbrook, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; C23G / ;
U.S. Cl.
CPC ...
134 40 ; 134-3 ; 134 41 ; 252140 ; 252146 ;
Abstract
Discovery of a critical solution temperature vs acid strength profile leads to an aqueous acid-type drain opener composition consisting essentially of a solution of between about 80.8% and 84.5% by weight sulfuric acid. The composition may also contain about 0.1-0.5% by weight corrosion inhibitors, and about 15.0-19.1% by weight of inert materials, including 10-19% water. The resulting drain opener composition is not only effective to dissolve typical drain-clogging materials, but very much safer to use than the conventional highly concentrated (about 93% by weight) sulfuric acid drain openers in terms of providing time-based safety factor against severe acid burns.