US2436774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and catalysts for the production of alkenyl cyanides
Assignee: Dow Chemical Co
•
Filing: 1943-09-24
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Granted: 1948-02-24
•
Expires: 1963-09-24
Abstract
No abstract record available.
Inventors
- 👤 Howard S Nutting
- 👤 Arthur R Sexton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:51
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE496372C
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US1784583A
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US1752016A
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US2008490A
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US2037389A
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GB512154A
Cited
US2374051A
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US2375005A
Cited
US2393569A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |