US3132956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acoustical tile, methods, and compositions
Assignee: Celotex Corp
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Filing: 1960-05-31
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Granted: 1964-05-12
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Expires: 1980-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jesse H Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:12
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/0038; C03; C03C; C03C4/00; C04B20/00; C04B20/10; C04B20/1055; Y; Y10; Y10S; Y10S106/00; Y10S106/01; Y10S106/02; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969; Y10T428/249971; Y10T428/249973; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2993
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A POROUS ACOUSTICAL TILE CONSISTING ESSENTIALLY OF AN EXPANDED MINERAL AGGREGATE IN PARTICULATE FORM BONDED TOGETHER BY A FIRED THIN CLAY COATING ON THE PARTICLES LEAVING INTERCONNECTED VOIDS IN THE TILE, THE CLAY COATING INCLUDING BENTONITE GROUP AND KAOLINITE GROUP CLAYS IN WHICH TILE THE PROPORTIONS BY WEIGHT ARE APPROXIMATELY FROM ABOUT 60 TO 80% PERLITE, 13 TO 26% KAOLINITE GROUPCLAY, AND 6 TO 14% BENTONITE GROUP CLAY.
Claim 2
Dependent Claim
68 words
A POROUS ACOUSTICAL TILE CONSISTING ESSENTIALLY OF AN EXPANDED MINERAL AGGREGATE IN PARTICULATE FORM BONDED TOGETHER BY A FIRED THIN CLAY COATING ON THE PARTICLES LEAVING INTERCONNECTED VOIDS IN THE TILE, THE CLAY COATING INCLUDING BENTONITE GROUP AND KAOLINITE GROUP CLAYS IN WHICH TILE THE PROPORTIONS BY WEIGHT ARE APPROXIMATELY FROM ABOUT 60 TO 80% PERLITE, 13 TO 26% KAOLINITE GROUPCLAY, AND 6 TO 14% BENTONITE GROUP CLAY.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |