Patent US2037040A successfully refreshed from Google Patents.
Patent US3234264A successfully refreshed from Google Patents.
US3234264A
Expired / Lapsed
US
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1-cyano and 1-carbamoyl-3-alkylbicyclo [1.1.0] butanes and processes for preparing the same
Assignee: EIDP Inc
•
Filing: 1963-05-24
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Granted: 1966-02-08
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Elwood P Blanchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:31
CPC Classifications
F; F02; F02K; F02K1/00; F02K1/06; F02K1/08; C; C07; C07C; C07C233/00; Y; Y02; Y02T; Y02T50/00; Y02T50/60
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)
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |