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Composite light weight gypsum wallboard

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B32B-003/26
  • B32B-013/00
  • C04B-028/14
출원번호 US-0525252 (2012-06-15)
등록번호 US-RE44070 (2013-03-12)
발명자 / 주소
  • Yu, Qiang
  • Song, Weixin D.
출원인 / 주소
  • United States Gypsum Company
대리인 / 주소
    Leydig Voit & Mayer, Ltd.
인용정보 피인용 횟수 : 7  인용 특허 : 200

초록

The invention provides a light weight composite gypsum board including a foamed low density set gypsum core, a top non-foamed (or reduced-foamed) bonding high density layer and a bottom non-foamed (or reduced-foamed) bonding high density layer, a top cover sheet bonded to the foamed low density set

대표청구항

1. A composite light weight gypsum composite board comprising: a foamed low density set gypsum core having a top surface and a bottom surface, the foamed low density set gypsum core made using a gypsum-containing slurry including stucco, from about 0.5% by weight to about 10% by weight pregelatinize

이 특허에 인용된 특허 (200)

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