Patent US3077389A successfully refreshed from Google Patents.
US3077389A
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Preparation of aqueous potassium silicate solutions
Assignee: EIDP Inc
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Filing: 1960-01-08
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Granted: 1963-02-12
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Expires: 1980-01-08
Abstract
No abstract record available.
Inventors
- 👤 William A Schulze
- 👤 David B Speed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:09
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/32; C01B33/325; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
THE PROCESS OF PREPARING A BATCH OF AN AQUEOUS POTASSIUM SILICATE SOLUTION COMPRISING DISSOLVING AT A TEMPERATURE, WITHIN THE RANGE OF 120 TO 330*F. AND A PRESSURE WITHIN THE RANGE OF ATMOSPHERIC TO 105 P.S.I. ABSOLUTE ELECTRONICS GRADE POTASSIUM SILICATE GLASS IN WATER HAVING A SPECIFIC CONDUCTIVITY OF LESS THAN THE RECIPROCAL OF ABOUT 50,000 OHMS AT 180*C. AND COOLING THE RESULTING SOLUTION TO ROOM TEMPERATURE AT A RATE NOT IN EXCESS OF ABOUT 10*F. PER HOUR.
Claim 2
Dependent Claim
77 words
THE PROCESS OF PREPARING A BATCH OF AN AQUEOUS POTASSIUM SILICATE SOLUTION COMPRISING DISSOLVING AT A TEMPERATURE, WITHIN THE RANGE OF 120 TO 330*F. AND A PRESSURE WITHIN THE RANGE OF ATMOSPHERIC TO 105 P.S.I. ABSOLUTE ELECTRONICS GRADE POTASSIUM SILICATE GLASS IN WATER HAVING A SPECIFIC CONDUCTIVITY OF LESS THAN THE RECIPROCAL OF ABOUT 50,000 OHMS AT 180*C. AND COOLING THE RESULTING SOLUTION TO ROOM TEMPERATURE AT A RATE NOT IN EXCESS OF ABOUT 10*F. PER HOUR.
References Cited (Backward Citations)
US2784060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |