Patent GB190912976A successfully refreshed from Google Patents.
US2460300A
Expired / Lapsed
US
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Polymeric products derived from diolefins and vinyl aromatic compounds and method of making same
Assignee: Dow Chemical Co
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Filing: 1944-06-29
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Granted: 1949-02-01
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Expires: 1964-06-29
Abstract
No abstract record available.
Inventors
- 👤 Fevre Walter J Le
- 👤 Kenneth G Harding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:58
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1938730A
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US2317858A
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US2333633A
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US2344785A
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US2380473A
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US2366328A
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US2388685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-01 | 1952-08-02 | 1953-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-01 | 1956-08-02 | 1957-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-01 | 1960-08-02 | 1961-02-01 | $7700.00 | Window Closed / Lapsed |