Patent US2571343A successfully refreshed from Google Patents.
US2571343A
Expired / Lapsed
US
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Self-setting plastic material consisting essentially of alpha-gypsum and an aminotriazine resin
Assignee: United States Gypsum Co
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Filing: 1945-01-25
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Granted: 1951-10-16
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Expires: 1965-01-25
Abstract
No abstract record available.
Inventors
- 👤 Manvel C Dailey
- 👤 Edward W Duffy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:03
CPC Classifications
C; C04; C04B; C04B24/00; C04B24/24; C04B24/28; C04B24/30; C08; C08K; C08K3/00; C08K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
PROCESS OF PRODUCING A DENSE, TOUGH CAST PRODUCT WHICH COMPRISES PRODUCING A POURABLE SLURRY BY GAUGING A MIXTURE OF A WATER-SOLUBLE POTENTIALLY INSOLUBILIZABLE AMINOTRIAZINE-ALDEHYDE CONDENSATION PRODUCT AND ALPHA GYPSUM HEMIHYDRATE WITH ONLY SUBSTANTIALLY SUFFICIENT WATER TO HYDRATE THE SAID GYPSUM HEMIHYDRATE, CASTING SAID POURABLE SLURRY INTOI SHAPE, AND INSOLUBILIZING SAID CONDENSATION PRODUCT.
Claim 2
Dependent Claim
52 words
PROCESS OF PRODUCING A DENSE, TOUGH CAST PRODUCT WHICH COMPRISES PRODUCING A POURABLE SLURRY BY GAUGING A MIXTURE OF A WATER-SOLUBLE POTENTIALLY INSOLUBILIZABLE AMINOTRIAZINE-ALDEHYDE CONDENSATION PRODUCT AND ALPHA GYPSUM HEMIHYDRATE WITH ONLY SUBSTANTIALLY SUFFICIENT WATER TO HYDRATE THE SAID GYPSUM HEMIHYDRATE, CASTING SAID POURABLE SLURRY INTOI SHAPE, AND INSOLUBILIZING SAID CONDENSATION PRODUCT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-15 | 1955-04-16 | 1955-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-15 | 1959-04-16 | 1959-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-15 | 1963-04-16 | 1963-10-16 | $7700.00 | Window Closed / Lapsed |