Patent US2710261A successfully refreshed from Google Patents.
US2710261A
Expired / Lapsed
US
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Mineral fiber compositions
Assignee: Unifrax I LLC
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Filing: 1952-05-16
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Granted: 1955-06-07
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Expires: 1972-05-16
Abstract
No abstract record available.
Inventors
- 👤 John C Mcmullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:50
CPC Classifications
C; C03; C03C; C03C13/00; C03C13/06; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
48 words
AN INORGANIC FIBROUS MATERIAL CONSISTING ESSENTIALLY OF BY OXIDE ANALYSIS 30% TO 70% BY WEIGHT SIO2, 5% TO 50% BY WEIGHT AL2O3 AND 2 1/2% TO 50% BY WEIGHT OF TIO2, AND CONTAINING LESS THAN 10% BY WEIGHT OF CAO AND LESS THAN 5% BY WEIGHT OF MGO.
References Cited (Backward Citations)
GB495654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-06 | 1958-12-06 | 1959-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-06 | 1962-12-06 | 1963-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-06 | 1966-12-06 | 1967-06-07 | $7700.00 | Window Closed / Lapsed |