US2716070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lime-silica insulation and method of making
Assignee: Keasbey and Mattison Co
•
Filing: 1949-07-11
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Granted: 1955-08-23
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Expires: 1969-07-11
Abstract
No abstract record available.
Inventors
- 👤 Willard R Seipt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:53
CPC Classifications
B; B28; B28B; B28B17/00; B28B17/02; B28B1/00; B28B1/52; B28B5/00; B28B5/02; B28B5/021; B28B5/022; C; C04; C04B; C04B28/00; C04B28/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
A THERMAL INSULATION COMPRISING A SUBSTANTIALLY HOMOGENEOUS MICRO-POROUS BODY ELEMENT ESSENTIALLY CONSISTING OF THE REACTION PRODUCTS OF CALCIUM HYDROXIDE AND SILICEOUS MATERIAL TOGETHER WITH REINFORCING ASBESTOS FIBRES, SAID BODY HAVING A DENSITY OF FROM 7 TO 20 POUNDS PER CUBIC FOOT, AND THE ABESTOS FIBRE CONTENT OF SAID BODY BEING FROM 8% TO 40% BY WEIGHT OF THE DRY SOLIDS CONTENT THEREOF, AND SAID BODY CONTAINING NOT IN EXCESS OF 3% REACTABLE ALUMINA AND HAVING A TEMPERATURE RESIST-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |