Patent US1476347A successfully refreshed from Google Patents.
Patent US2447610A successfully refreshed from Google Patents.
US2447610A
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US
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Solid halogen derivatives of polymerized methyl pentadiene
Assignee: Standard Oil Development Co
•
Filing: 1943-12-07
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Granted: 1948-08-24
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Expires: 1963-12-07
Abstract
No abstract record available.
Inventors
- 👤 John D Calfee
- 👤 Robert M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:45
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1980396A
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US2072255A
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US2142980A
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US2292737A
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US2291574A
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US2327705A
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US2329486A
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US2356129A
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US2391817A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |