Patent US2507512A successfully refreshed from Google Patents.
US2507512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monofunctional polysilahydrocarbons and their production
Assignee: Dow Silicones Corp
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Filing: 1948-04-20
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Granted: 1950-05-16
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Expires: 1968-04-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John T Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:36
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOSITIONS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
5 words
COMPOSITIONS OF THE GENERAL FORMULA
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) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |