Patent US2811541A successfully refreshed from Google Patents.
US2811541A
Expired / Lapsed
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Polymerization of vinyldihydrocarbylsilanes and products thereof
Assignee: Dow Silicones Corp
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Filing: 1955-06-20
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Granted: 1957-10-29
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Expires: 1975-06-20
Abstract
No abstract record available.
Inventors
- 👤 James W Curry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:33
CPC Classifications
C; C08; C08F; C08F30/00; C08F30/04; C08F30/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
13 words
A METHOD OF POLYMERIZING VINYLSILANES WHICH COMPRISES HEATING A VINYLSILANE OF THE FORMULA
Claim 2
Independent Claim
13 words
A METHOD OF POLYMERIZING VINYLSILANES WHICH COMPRISES HEATING A VINYLSILANE OF THE FORMULA
Claim 3
Dependent Claim
6 words
A POLYMER OF THE UNIT FORMULA
Claim 4
Dependent Claim
6 words
A POLYMER OF THE UNIT FORMULA
References Cited (Backward Citations)
US2721873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |