Patent US2601291A successfully refreshed from Google Patents.
US2601291A
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Nonfreezing silica sols stabilized with organic amine compounds
Assignee: EIDP Inc
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Filing: 1949-11-18
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Granted: 1952-06-24
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Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
- 👤 Samuel C Horning
- 👤 Charles W Shay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:31
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/146; C01B33/148; C01B33/1485
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
51 words
AN AQUEOUS SILICA SOL MODIFIED BY THE ADDITION OF, PER HUNDRED GRAMS OF SIO2 IN THE SOL, ABOUT FROM 0.05 TO 2.2 MOLS OF A WATER-SOLUBLE, ORGANIC AMINE HAVING NO CHAIN OF MORE THAN SIX CARBON ATOMS, THE AMINE BEING SELECTED FROM THE GROUP CONSISTING OF ACYCLIC AND ALICYCLIC, NONAROMATIC AMINES.
References Cited (Backward Citations)
US2435379A
Cited
US2422499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |