Patent US2476936A successfully refreshed from Google Patents.
US2476936A
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US
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Catalytic polymerization of allyl esters
Assignee: Shell Development Co
•
Filing: 1945-03-28
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Granted: 1949-07-19
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Expires: 1965-03-28
Abstract
No abstract record available.
Inventors
- 👤 Whetstone Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:32
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/12; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2129665A
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GB514116A
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US2136425A
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US2273891A
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US2289765A
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US2251983A
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US2380475A
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US2380474A
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US2383055A
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US2384571A
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US2395017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |