US2601352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica sols and method of making same
Assignee: EIDP Inc
•
Filing: 1950-01-16
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Granted: 1952-06-24
•
Expires: 1970-01-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Wolter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:18
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/146; C01B33/148; C01B33/1485
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A SOLID, WATER-DISPERSIBLE COMPOSITION COMPRISING SILICA MADE UP OF DENSE, ULTIMATE PARTICLES 15 TO 130 MILLIMICRONS IN DIAMETER INTIMATELY MIXED WITH AN ORANIC NITROGEN BASE IN WHICH EACH ORGANIC SUBSTITUENT ON THE NITROGEN ATOM CONTAINS NO CARBON ATOM FARTHER REMOVED FROM THE NITROGEN THAN 5 CONSECUTIVE CARBON ATOMS AND THE TOTAL NUMBER OF CARBON ATOMS ATTACHED TO THE NITROGEN EXCLUSIVELY THROUGH CARBON IS NOT MORE THAN 4 TIMES THE NUMBER OF SUBSTITUENT GROUPS.
Claim 2
Dependent Claim
73 words
A SOLID, WATER-DISPERSIBLE COMPOSITION COMPRISING SILICA MADE UP OF DENSE, ULTIMATE PARTICLES 15 TO 130 MILLIMICRONS IN DIAMETER INTIMATELY MIXED WITH AN ORANIC NITROGEN BASE IN WHICH EACH ORGANIC SUBSTITUENT ON THE NITROGEN ATOM CONTAINS NO CARBON ATOM FARTHER REMOVED FROM THE NITROGEN THAN 5 CONSECUTIVE CARBON ATOMS AND THE TOTAL NUMBER OF CARBON ATOMS ATTACHED TO THE NITROGEN EXCLUSIVELY THROUGH CARBON IS NOT MORE THAN 4 TIMES THE NUMBER OF SUBSTITUENT GROUPS.
References Cited (Backward Citations)
US2450394A
Cited
US2506316A
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 |