Patent US2940984A successfully refreshed from Google Patents.
US2940984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tricyclo (4. 2. 1. 0) non-7-enes and tetracyclo (3. 2. 1. 1. 0) nonanes
Assignee: EIDP Inc
•
Filing: 1957-06-19
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Granted: 1960-06-14
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Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Applequist
- 👤 England David Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:44
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/54; C07C51/567
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A POLYCYCLIC ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRICYCLO (4.2.1.0**2,5) NON-7-ENES HAVING THE FORMULA
Claim 2
Dependent Claim
16 words
A POLYCYCLIC ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRICYCLO (4.2.1.0**2,5) NON-7-ENES HAVING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |