US2744022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plaster compositions and products
Assignee: Certainteed LLC
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Filing: 1952-07-30
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Granted: 1956-05-01
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Expires: 1972-07-30
Abstract
No abstract record available.
Inventors
- 👤 Croce Michele
- 👤 Clarence G Shuttleworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:43
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/14; C04B20/00; C04B20/0048; C04B2111/00; C04B2111/20; C04B2111/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
A COMPOSITION CONVERTIBLE BY WATER ADDITION INTO A SETTABLE PLASTIC MASS, SAID COMPOSITION CONSISTING ESSENTIALLY OF CALCINED GYPSUM PLASTER, COMMINUTED UNEXPANDED VERMICULITE AND SECTIONS OF TEXTILE GLASS FIBER STRANDS, THE LENGTH OF SAID SECTIONS OF TEXTILE FIBER BEING BETWEEN ONE QUARTER INCH AND ONE INCH AND COMPRISING NOT SUBSTANTIALLY LESS THAN .02% AND NOT SUBSTANTIALLY MORE THAN 1.0% BY WEIGHT OF THE TOTAL WEIGHT OF SAID UNEXPECTED VERMICULITE, SAID TEXTILE GLASS STRANDS AND SAID CALCINED GYPSUMPLASTER, EACH OF SAID SECTIONS OF TEXTILE GLASS FIBER STRANDS BEING COMPOSED OF A PLURALITY OF INDIVIDUAL TEXTILE GLASS FILAMENTS BONDED TOGETHER IN SUBSTANTIALLY PARALLEL RELATIONSHIP IN SAID STRAND BY A WATER SOFTENABLE BINDER, SAID BINDER BEING SUFFICIENTLY WEAK TO ENABLE SUBSTANTIAL SEPARATION OF SAID STRANDS INTO INDIVIDUAL FILAMENTS THROUGHOUT SAID PLASTER AS AN INCIDENT TO THE AGITATION OF SAID COMPOSITION WITH WATER, THE PARTICULAR DEGREE OF COMMINUTION AND THE GRADE AND AMOUNT OF SAID UNEXPANDED VERMICULITE BEING SUCH THAT WHEN HEATED TO THE CALCINING TEMPERATURE OF SAID GYPSUM PLASTER SAID VERMICULITE SHALL HAVE SUBSTANTIALLY THE SAME TOTAL AMOUNT OF EXPANSION AS WOULD 3 1/2% TO 7 1/2% OF HIGH GRADE VERMICULITE OF MINUS 28 MESH COMMERCIAL GRADE.
Claim 2
Dependent Claim
193 words
A COMPOSITION CONVERTIBLE BY WATER ADDITION INTO A SETTABLE PLASTIC MASS, SAID COMPOSITION CONSISTING ESSENTIALLY OF CALCINED GYPSUM PLASTER, COMMINUTED UNEXPANDED VERMICULITE AND SECTIONS OF TEXTILE GLASS FIBER STRANDS, THE LENGTH OF SAID SECTIONS OF TEXTILE FIBER BEING BETWEEN ONE QUARTER INCH AND ONE INCH AND COMPRISING NOT SUBSTANTIALLY LESS THAN .02% AND NOT SUBSTANTIALLY MORE THAN 1.0% BY WEIGHT OF THE TOTAL WEIGHT OF SAID UNEXPECTED VERMICULITE, SAID TEXTILE GLASS STRANDS AND SAID CALCINED GYPSUMPLASTER, EACH OF SAID SECTIONS OF TEXTILE GLASS FIBER STRANDS BEING COMPOSED OF A PLURALITY OF INDIVIDUAL TEXTILE GLASS FILAMENTS BONDED TOGETHER IN SUBSTANTIALLY PARALLEL RELATIONSHIP IN SAID STRAND BY A WATER SOFTENABLE BINDER, SAID BINDER BEING SUFFICIENTLY WEAK TO ENABLE SUBSTANTIAL SEPARATION OF SAID STRANDS INTO INDIVIDUAL FILAMENTS THROUGHOUT SAID PLASTER AS AN INCIDENT TO THE AGITATION OF SAID COMPOSITION WITH WATER, THE PARTICULAR DEGREE OF COMMINUTION AND THE GRADE AND AMOUNT OF SAID UNEXPANDED VERMICULITE BEING SUCH THAT WHEN HEATED TO THE CALCINING TEMPERATURE OF SAID GYPSUM PLASTER SAID VERMICULITE SHALL HAVE SUBSTANTIALLY THE SAME TOTAL AMOUNT OF EXPANSION AS WOULD 3 1/2% TO 7 1/2% OF HIGH GRADE VERMICULITE OF MINUS 28 MESH COMMERCIAL GRADE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |