US3372040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant cementitious plaster composition
Assignee: Individual
•
Filing: 1962-11-20
•
Granted: 1968-03-05
•
Expires: 1982-11-20
Abstract
No abstract record available.
Inventors
- 👤 Ware Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:01
CPC Classifications
C; C04; C04B; C04B22/00; C04B22/08; C04B22/16; C04B28/00; C04B28/02; C04B28/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A FIRE-RESISTANT PLASTER COMPOSITION CONSISTING ESSENTIALLY OF (1) PORTLAND CEMENT, (2) ABOUT 10-50% BY WEIGHT OF A NATURAL-OCCURRING PHOSPHATE ROCK HAVING A 0.25 TO 40% BY WEIGHT OF P2O5 AND A PARTICLE SIZE RANGING FROM ABOUT 10-350 MESH, (3) 2-12% BY WEIGHT OF LIME, (4) 0 TO 50% BY WEIGHT OF AN EXFOLIATED MATERIAL SELECTED FROM THE GROUP CONSISTING OF VERMICULITE, PERLITE, AND MIXTURES THEREOF, (5) 0 TO 2.0% BY WEIGHT OF AN ADHESIVEBINDER, (6) AND 0 TO 1.0% BY WEIGHT OF A SURFACE-ACTIVE AGENT.
Claim 2
Dependent Claim
85 words
A FIRE-RESISTANT PLASTER COMPOSITION CONSISTING ESSENTIALLY OF (1) PORTLAND CEMENT, (2) ABOUT 10-50% BY WEIGHT OF A NATURAL-OCCURRING PHOSPHATE ROCK HAVING A 0.25 TO 40% BY WEIGHT OF P2O5 AND A PARTICLE SIZE RANGING FROM ABOUT 10-350 MESH, (3) 2-12% BY WEIGHT OF LIME, (4) 0 TO 50% BY WEIGHT OF AN EXFOLIATED MATERIAL SELECTED FROM THE GROUP CONSISTING OF VERMICULITE, PERLITE, AND MIXTURES THEREOF, (5) 0 TO 2.0% BY WEIGHT OF AN ADHESIVEBINDER, (6) AND 0 TO 1.0% BY WEIGHT OF A SURFACE-ACTIVE AGENT.
References Cited (Backward Citations)
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Cited
US1937292A
Cited
US2090625A
Cited
GB500416A
Cited
US2272576A
Cited
US2303463A
Cited
US2632743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |