US2645654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Siloxane-aluminum compositions and methods of preparing them
Assignee: Dow Silicones Corp
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Filing: 1950-04-17
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Granted: 1953-07-14
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Expires: 1970-04-17
Abstract
No abstract record available.
Inventors
- 👤 James F Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:42
CPC Classifications
C; C08; C08G; C08G77/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
A CYCLIC COMPOUND WHEREIN THE RING IS COMPOSED OF SILICON, OXYGEN AND ALUMINUM ATOMS, HAVING THE EMPIRICAL FORMULA (R2SIO2ALCL)2 WHERE R IS SELECTED FROM THE GROUP CONSITING OF METHYL, ETHYL, AND PHENYL RADICALS AND IN WHICH CYCLIC COMPOUND THE SILICON AND ALUMINUM ATOMS ARE LINKED THROUGH SIOAL LINKAGES, THE CHLORINE ATOMS ARE BONDED TO THE ALUMINUM ATOMS AND THE ORGANIC RADICALS ARE BONDED TO THE SILICON ATOMS.
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) | 1956-07-13 | 1957-01-12 | 1957-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-13 | 1961-01-12 | 1961-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-13 | 1965-01-12 | 1965-07-14 | $7700.00 | Window Closed / Lapsed |