Chemical additive for gypsum products

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9133060
APP PUB NO 20150007753A1
SERIAL NO

14379700

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Abstract

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The present invention provides a gypsum composition, a gypsum board and their preparation method and the use of DHA as an anti-sagging additive in a gypsum product. Said gypsum board comprises set gypsum prepared from the composition; while said composition comprises gypsum, and an anti-deformation additive, wherein the anti-deformation additive comprises at least one selected from a group consisting of dehydroascorbic acid, dehydroascorbate and semidehydroascorbic acid. The set gypsum prepared from the said composition shows better anti-sagging or deformation resisting property. The gypsum product of the present invention is hardly distorted and has stronger stability even in the condition of high humidity, thus improve the quality of the gypsum product to meet the demands of the customer.

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Patent Owner(s)

Patent OwnerAddress
SAINT-GOBAIN PLACOTOUR SAINT-GOBAIN 12 PLACE DE L'IRIS COURBEVOIE 92400

International Classification(s)

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  • 2012 Application Filing Year
  • C04B Class
  • 940 Applications Filed
  • 840 Patents Issued To-Date
  • 89.37 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2012201320142015201620172018201920202021202220230255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gao, Xiaotong Shanghai, CN 5 4
Li, Huifen Shanghai, CN 7 24
Shao, Dongxiao Shanghai, CN 1 1
Song, Hao Shanghai, CN 92 455
Zhang, Ke Shanghai, CN 364 1936

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Patent Citation Ranking

  • 1 Citation Count
  • C04B Class
  • 16.97 % this patent is cited more than
  • 10 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges8533150127453401 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 70100 +020406080100120140160180200220240260280300320340360

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 15, 2027