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:
Dec. 28, 1976
Filed:
Jun. 13, 1975
Applicant:
Inventor:
Daniel K Dunn, Kankakee, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264232 ; 106 75 ; 264122 ; 264133 ;
Abstract
Expanded perlite particles and vermiculite particles are treated with an acid solution and then with waterglass. The moist material is introduced into any insulating cavity and allowed to dry, whereupon it self-adheres into a solid insulating sheet which also adheres to the surrounding cavity surfaces. The moist material is also used to make molded articles which are then treated further with an acid solution to render them stable.