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:
Aug. 30, 1977
Filed:
May. 19, 1975
Applicant:
Inventor:
Andrew M Wohlert, St. Charles, IL (US);
Assignee:
Riverbank Laboratories, Inc., Geneva, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ;
U.S. Cl.
CPC ...
134-1 ; 134 10 ; 134 / ; 134 30 ; 134 39 ; 134 40 ; 134 60 ; 134 67 ; 134108 ; 134111 ; 134151 ; 134154 ; 134155 ; 209164 ; 209170 ;
Abstract
The carbon-wax coating is removed from carbon paper by sequentially immersing the coated paper in hot aqueous baths, the paper being squeeze-dried prior to immersion in each bath after the first. Ultrasonic vibrations are applied to the first bath to mutually separate the individual pieces of the paper.