Patent US2453039A successfully refreshed from Google Patents.
US2453039A
Expired / Lapsed
US
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Manufacture of resins from sulfur dioxide and unsaturated organic compounds
Assignee: Phillips Petroleum Co
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Filing: 1943-08-23
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Granted: 1948-11-02
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Expires: 1963-08-23
Abstract
No abstract record available.
Inventors
- 👤 Allison K Scribner
- 👤 Frank W Wilder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:27
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/20; C08G75/205; C08G75/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB528051A
Cited
US1890772A
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US2280818A
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DE670212C
Cited
US2112986A
Cited
US2184295A
Cited
US2292737A
Cited
US2314067A
Cited
US2356896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |