US2630410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nongelling aqueous silica sols stabilized with boron compounds
Assignee: Union Carbide Corp
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Filing: 1949-04-19
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Granted: 1953-03-03
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Expires: 1969-04-19
Abstract
No abstract record available.
Inventors
- 👤 Leo J Clapsadle
- 👤 Michael G Syracuse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:00
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/141; C01B33/1415; C01B33/146; C01B33/148; C01B33/1485
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
AN AQUEOUS SILICA SOL COMPOSITION CONSISTING ESSENTIALLY OF THE SOL AND, IN AN AMOUNT EFFECTIVE TO PREVENT GELATION OF THE SOL, A MEMBER OF THE GROUP CONSISTING OF BORIC ACIDS AND ALKALI BORATES.
Claim 2
Dependent Claim
33 words
AN AQUEOUS SILICA SOL COMPOSITION CONSISTING ESSENTIALLY OF THE SOL AND, IN AN AMOUNT EFFECTIVE TO PREVENT GELATION OF THE SOL, A MEMBER OF THE GROUP CONSISTING OF BORIC ACIDS AND ALKALI BORATES.
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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |