US3269888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying silicate to wet asbestos-slag cement sheets after formation but prior to consolidation of such sheets
Assignee: Johns Manville Corp
•
Filing: 1963-12-24
•
Granted: 1966-08-30
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Expires: 1983-12-24
Abstract
No abstract record available.
Inventors
- 👤 Yang Julie Chi-Sun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:06
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; B; B28; B28B; B28B1/00; B28B1/30; B28B1/40; B28B1/42; B28B21/00; B28B21/42; B28B21/48; C04B28/00; C04B28/02; C04B28/08; C04B28/24; C04B28/26; C04B41/45; C04B41/50; C04B41/5076; C04B41/5089; C04B41/60; C04B41/61; C04B41/65; C04B41/68; Y; Y02; Y02P; Y02P40/00; Y02P40/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
THE METHOD OF MANUFACTURING ASBESTOS-SLAG CEMENT PRODUCTS COMPRISING, DISPERSING AN ASBESTOS-HYDRAULIC SLAG CEMENT STOCK FURNISH IN WATER FORMING A DILUTE AQUEOUS SLURRY OF THE SOLIDS THEREOF, SAID HYDRAULIC SLAG CEMENT COMPONENT OF THE STOCK FURNISH COMPRISING AT LEAST APPROXIMATELY 50% BY WEIGHT OF HYDRAULIC SETTING SLAG CEMENT, FORMING A THIN WET SHEET OF THE SLURRY SOLIDS COMPRISING THE HYDRAYLIC CEMENT UPON A POROUS MEMBER, APPLYING AN AQUEOUS SOLUTION OF SODIUM SILICATE TO THE THIN WET SHEET OF SLURRY SOLIDS IN AMOUNT OF APPROXIMATELY 0.125% TO 5.0% BY WEIGHT OF SODIUM SILICATE SOLIDS BASED UPON THE ASBESTOS-HYDRAULIC SLAG CEMENT STOCK FURNISH SOLIDS CONTENT OF THE WET SHEET, SAID APPLICATION OF SODIUM SILICATE SOLIDS BEING PRIOR TO CONSOLIDATION OF THE SAID THIN WET SHEET WHEREBY THE SODIUM SILICATE SOLUTION IN DISTRIBUTED THROUGHOUT THE SAME, SUPERIMPOSING LAYERS OF THE WET SODIUM SILICATE CONTAINING SHEET OF SLURRY SOLIDS INTO A LAMINATED STRUCTURE AND CONSOLIDATING THE LAMINATED STRUCTURE INTEGRATING THE LAYERS THEREOF.
Claim 2
Independent Claim
157 words
THE METHOD OF MANUFACTURING ASBESTOS-SLAG CEMENT PRODUCTS COMPRISING, DISPERSING AN ASBESTOS-HYDRAULIC SLAG CEMENT STOCK FURNISH IN WATER FORMING A DILUTE AQUEOUS SLURRY OF THE SOLIDS THEREOF, SAID HYDRAULIC SLAG CEMENT COMPONENT OF THE STOCK FURNISH COMPRISING AT LEAST APPROXIMATELY 50% BY WEIGHT OF HYDRAULIC SETTING SLAG CEMENT, FORMING A THIN WET SHEET OF THE SLURRY SOLIDS COMPRISING THE HYDRAYLIC CEMENT UPON A POROUS MEMBER, APPLYING AN AQUEOUS SOLUTION OF SODIUM SILICATE TO THE THIN WET SHEET OF SLURRY SOLIDS IN AMOUNT OF APPROXIMATELY 0.125% TO 5.0% BY WEIGHT OF SODIUM SILICATE SOLIDS BASED UPON THE ASBESTOS-HYDRAULIC SLAG CEMENT STOCK FURNISH SOLIDS CONTENT OF THE WET SHEET, SAID APPLICATION OF SODIUM SILICATE SOLIDS BEING PRIOR TO CONSOLIDATION OF THE SAID THIN WET SHEET WHEREBY THE SODIUM SILICATE SOLUTION IN DISTRIBUTED THROUGHOUT THE SAME, SUPERIMPOSING LAYERS OF THE WET SODIUM SILICATE CONTAINING SHEET OF SLURRY SOLIDS INTO A LAMINATED STRUCTURE AND CONSOLIDATING THE LAMINATED STRUCTURE INTEGRATING THE LAYERS THEREOF.
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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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |