US2449928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic rubber plasticized with a composition composed essentially of an aromatic hydrocarbon oil
Assignee: Pennsylvania Industrial Chemical Corp
•
Filing: 1944-02-26
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Granted: 1948-09-21
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Expires: 1964-02-26
Abstract
No abstract record available.
Inventors
- 👤 Frank W Corkery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2128985A
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US2153141A
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US2149577A
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US2207552A
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US2285562A
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US2282327A
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US2350007A
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US2342090A
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US2373982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |