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. 21, 1980
Filed:
Aug. 13, 1979
Applicant:
Inventor:
Joseph Savit, Glencoe, IL (US);
Assignee:
AES Technology Systems, Inc., Elk Grove Village, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
B65B / ; B65B / ;
U.S. Cl.
CPC ...
53492 ; 5338 / ; 5338 / ; 156247 ; 252-1 ; 252142 ;
Abstract
In an envelope opening process in which an aqueous solution of a chemical degradation agent, such as tartaric acid is applied to envelope edges and the envelope edges are then heated and subjected to a mild mechanical action, penetration of the degradation agent through the envelope paper at its edges is assured by including in the aqueous solution from 2.5% to 30% of a glycol ether, such as ethylene glycol ethyl ether.