US2811457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inorganic bonded thermal insulating bodies and method of manufacture
Assignee: Johns Manville Corp
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Filing: 1952-12-18
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Granted: 1957-10-29
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Expires: 1972-12-18
Abstract
No abstract record available.
Inventors
- 👤 Speil Sidney
- 👤 Barnett Irvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:42
CPC Classifications
C; C04; C04B; C04B30/00; C04B30/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A CERAMIC-BONDED, HANDLEABLE INSULATING BODY HAVING A DENSITY OF LESS THAN APPROXIMATELY 30 LBS./CU. FT AND A THERMAL CONDUCTIVITY FACTOR K OF LESS THAN APPROXIMATELY 0.55 AT 1000*F. MEAN, COMPRISING HEAT-STABLE STAPLE REINFORCING FIBERS IN AMOUNT SUFFICIENT TO FORM A REINFORCING SKELETON UP TO APPROXIMATELY 15% BY WEIGHT, APPROXIMATELY 40 TO 95% BY WEIGHT OF INORGANIC AEROGEL PARTICLES CONTAINING A TOTAL VOID SPACE OF APPROXIMATELY 75 TO 99% BY VOLUME, FINELY DIVIDED OPACIFIER PARTICLES, AND A CERAMIC BINDER DISTRIBUTED THROUGHOUT SAID BODY ESSENTIALLY COMPRISING THE HEAT REACTION PRODUCT OF THE INGREDIENTS INITIALLY PRESENT IN SAID AEROGEL PARTICLES.
Claim 2
Dependent Claim
97 words
A CERAMIC-BONDED, HANDLEABLE INSULATING BODY HAVING A DENSITY OF LESS THAN APPROXIMATELY 30 LBS./CU. FT AND A THERMAL CONDUCTIVITY FACTOR K OF LESS THAN APPROXIMATELY 0.55 AT 1000*F. MEAN, COMPRISING HEAT-STABLE STAPLE REINFORCING FIBERS IN AMOUNT SUFFICIENT TO FORM A REINFORCING SKELETON UP TO APPROXIMATELY 15% BY WEIGHT, APPROXIMATELY 40 TO 95% BY WEIGHT OF INORGANIC AEROGEL PARTICLES CONTAINING A TOTAL VOID SPACE OF APPROXIMATELY 75 TO 99% BY VOLUME, FINELY DIVIDED OPACIFIER PARTICLES, AND A CERAMIC BINDER DISTRIBUTED THROUGHOUT SAID BODY ESSENTIALLY COMPRISING THE HEAT REACTION PRODUCT OF THE INGREDIENTS INITIALLY PRESENT IN SAID AEROGEL PARTICLES.
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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |