US2609384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
alpha-aryl-beta-alkoxyacrylonitriles and method of preparing same
Assignee: SmithKline Beecham Corp
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Filing: 1950-12-30
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Granted: 1952-09-02
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Expires: 1970-12-30
Abstract
No abstract record available.
Inventors
- 👤 Russell Peter Byrom
- 👤 Whittaker Norman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:23
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A SUBSTANCE 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) | 1955-09-02 | 1956-03-03 | 1956-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-02 | 1960-03-03 | 1960-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-02 | 1964-03-03 | 1964-09-02 | $7700.00 | Window Closed / Lapsed |