Patent US3231657A successfully refreshed from Google Patents.
US3231657A
Expired / Lapsed
US
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Method of curing calcium silicate insulating materials
Assignee: Owens Corning
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Filing: 1962-12-28
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Granted: 1966-01-25
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Expires: 1982-12-28
Abstract
No abstract record available.
Inventors
- 👤 George L Kalousek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:51
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE PROCESS OF PRODUCING A CALCIUM SILICATE REACTION PRODUCT WHICH COMPRISES REACTING AN AQUEOUS SLURRY INCLUDING LIME AND SIICA UNDER INDURATING CONDITIONS FOR A SUFFICIENT TIME AS TO YIELD A SOLID INTEGRATED MICROCRYSTALLINE STRUCTURE, SAID REACTION PROCEDDING WITH THE FORMATION OF AN INITIAL GELATINOUS PHASE FOLLOWED BY CONVERSION TO SAID INTEGRATED STRUCTURE, COMPRISING INTRODUCING A STREAM OF SUPERHEATED STEAM DURING SAID INDURATION AND WHILE SAID INITIAL GELATINOUS PHASE STILL EXISTS, AND FINALLY REMOVING THE REACTION PRODUCT FROM THE RECTION ZONE.
Claim 2
Dependent Claim
80 words
THE PROCESS OF PRODUCING A CALCIUM SILICATE REACTION PRODUCT WHICH COMPRISES REACTING AN AQUEOUS SLURRY INCLUDING LIME AND SIICA UNDER INDURATING CONDITIONS FOR A SUFFICIENT TIME AS TO YIELD A SOLID INTEGRATED MICROCRYSTALLINE STRUCTURE, SAID REACTION PROCEDDING WITH THE FORMATION OF AN INITIAL GELATINOUS PHASE FOLLOWED BY CONVERSION TO SAID INTEGRATED STRUCTURE, COMPRISING INTRODUCING A STREAM OF SUPERHEATED STEAM DURING SAID INDURATION AND WHILE SAID INITIAL GELATINOUS PHASE STILL EXISTS, AND FINALLY REMOVING THE REACTION PRODUCT FROM THE RECTION ZONE.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |