Patent US2741562A successfully refreshed from Google Patents.
US2741562A
Expired / Lapsed
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High expansion plaster compositions
Assignee: Certainteed LLC
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Filing: 1952-07-31
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Granted: 1956-04-10
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Expires: 1972-07-31
Abstract
No abstract record available.
Inventors
- 👤 Holly G Haworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:56
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B2103/00; C04B2103/10; C04B2103/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A PLASTER COMPOSITION CHARACTERIZED BY A RELATIVELY HIGH RATE OF EXPANSION AND ABILITY TO ATTAIN THE DESIRED CONDITION OF EXPANSION WITHIN A RELATIVELY SHORT TIME AFTER BEING POURED, SAID COMPOSITION CONSISTING ESSENTIALLY OF GYPSM PLASTER, AND ACCELERATOR, AND EXPANSION PRODUCING INGREDIENTS, SAID EXPANSION PRODUCING INGREDIENTS CONSISTING ESSENTIALLY OF A PROTEINACEOUS MATERIAL AND SODIUM FLUORIDE.
References Cited (Backward Citations)
US845791A
Cited
US878382A
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GB163349A
Cited
US1895979A
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US2071681A
Cited
US2390138A
Cited
US2494403A
Cited
US2523646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |