Invention Grant
- Patent Title: Light weight gypsum board
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Application No.: US15802048Application Date: 2017-11-02
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Publication No.: US10406779B2Publication Date: 2019-09-10
- Inventor: Qiang Yu , Weixin David Song
- Applicant: United States Gypsum Company
- Applicant Address: US IL Chicago
- Assignee: United States Gypsum Company
- Current Assignee: United States Gypsum Company
- Current Assignee Address: US IL Chicago
- Agency: Leydig, Voit & Mayer, Ltd.
- Agent Philip T. Petti; Pradip K. Sahu
- Main IPC: B32B13/08
- IPC: B32B13/08 ; B32B3/26 ; B32B5/02 ; B32B17/02 ; B32B29/00 ; C04B28/14 ; B32B13/14 ; C04B111/00 ; C04B111/40
Abstract:
This invention provides gypsum wallboards with a unique microstructure where the walls between voids are enhanced in thickness and strength to substantially improve the strength and handling properties of the wallboards. A method of making lightweight gypsum wallboards is also provided.
Public/Granted literature
- US20180117878A1 MICROSTRUCTURE FEATURES OF GYPSUM WALLBOARD MADE WITH HIGH STARCH AND HIGH DISPERSANT LEVEL Public/Granted day:2018-05-03
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