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:
Feb. 24, 2026
Filed:
Jul. 10, 2023
Applicant:
Knauf Gips KG, Iphofen, DE;
Inventors:
Sooraj Kumar Ambadi Omanakuttan Nair, Evanston, IL (US);
Mark K. Hemphill, Hawthorn Woods, IL (US);
Yijun Sang, Oak Park, IL (US);
Annamaria Vilinska, Chicago, IL (US);
Assignee:
KNAUF GIPS KG, Iphofen, DE;
Primary Examiner:
Int. Cl.
CPC ...
B28B 19/00 (2006.01); C04B 28/14 (2006.01); C04B 111/00 (2006.01);
U.S. Cl.
CPC ...
B28B 19/0092 (2013.01); C04B 28/14 (2013.01); C04B 2111/0062 (2013.01);
Abstract
A method and apparatus to manufacture gypsum board that directs a first portion of aqueous gypsum slurry to a front cover sheet, directs a second portion of aqueous gypsum slurry to a back cover sheet, passes the back cover sheet over a roller spaced above the front cover sheet so that a majority of the second aqueous gypsum slurry falls off the back cover sheet onto the first portion of aqueous gypsum slurry on the front cover sheet. A gypsum board made by the method or apparatus.