Method of manufacturing gypsum board with improved fire resistance
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United States of America Patent
Stats
-
Jul 9, 2024
Grant Date -
Sep 8, 2022
app pub date -
May 23, 2022
filing date -
Jan 23, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present disclosure is directed to a method of manufacturing gypsum board as well as the resulting gypsum board. The method comprises providing a gypsum slurry with a shrinkage-reducing additive comprising a metal salt of an acid, a silica, or a mixture thereof. As a result, the gypsum board includes gypsum and a shrinkage-reducing additive comprising a metal salt of an acid, a silica, or a mixture thereof. The gypsum board exhibits an area shrinkage of less than 10%.
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International Classification(s)
- 2022 Application Filing Year
- C04B Class
- 1213 Applications Filed
- 330 Patents Issued To-Date
- 27.21 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C04B Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Jan 9, 2028 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 9, 2032 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 9, 2036 |
