Patent US3138615A successfully refreshed from Google Patents.
US3138615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel bicyclo[2. 2. 2] oct 7-ene tetracarboxylic diimides
Assignee: Diamond Shamrock Corp
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Filing: 1960-02-11
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Granted: 1964-06-23
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Expires: 1980-02-11
Abstract
No abstract record available.
Inventors
- 👤 Bluestone Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:17
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2740744A
Cited
US2904553A
Cited
US2665234A
Cited
US2861919A
Cited
US2875123A
Cited
US2904554A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |