Patent US2813134A successfully refreshed from Google Patents.
US2813134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of cyclodiene monomers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-09-10
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Granted: 1957-11-12
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Expires: 1973-09-10
Abstract
No abstract record available.
Inventors
- 👤 John F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:17
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; C07C7/00; C07C7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
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
Claim 2
Dependent Claim
169 words
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
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |