Patent US3284461A successfully refreshed from Google Patents.
US3284461A
Expired / Lapsed
US
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O-pyridylalkyl-n-alkenyl urethanes and process for their production
Assignee: Nepera Chemical Co Inc
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Filing: 1964-11-27
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Granted: 1966-11-08
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Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Wilbert Godfrey
- 👤 Hyden Seymour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:21
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A COMPOUND OF THE FORMULA (R-NH-COO-(CH2)N-)PYRIDINE WHEREIN R IS LOWER ALKENYL AND N IS 1 OR 2.
Claim 2
Dependent Claim
17 words
A COMPOUND OF THE FORMULA (R-NH-COO-(CH2)N-)PYRIDINE WHEREIN R IS LOWER ALKENYL AND N IS 1 OR 2.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |