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:
Mar. 16, 1993
Filed:
Oct. 02, 1989
Applicant:
Inventors:
John D Koch, Greenwood, IN (US);
Mark R Glassley, Greensburg, IN (US);
Richard N Cunningham, Greenwood, IN (US);
C F Owen, Meadowview, IN (US);
Assignee:
Knauf Fiber Glass, GmbH, Shelbeyville, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B27N / ; B28B / ; B29C / ; D21B / ;
U.S. Cl.
CPC ...
264115 ; 162225 ; 162226 ; 264118 ; 264119 ; 264122 ; 264145 ; 264160 ; 264162 ; 264163 ; 2642977 ; 264319 ; 264D / ; 264D / ; 264D / ;
Abstract
A process for using shredded scrap or virgin fiber glass in combination with starch, water and other components to make ceiling tiles. The tiles are made by initially preparing a mixture of water, starch, boric acid and fire clay. That initial mixture is then heated to form a gel. Fiber glass is then added to the gel to form a pulp. The pulp is fed into trays to form slabs. The slabs are dried and finished into tiles.