US2197709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acyl styrenes
Assignee: Armour and Co
•
Filing: 1938-04-11
•
Granted: 1940-04-16
•
Expires: 1958-04-11
Abstract
No abstract record available.
Inventors
- 👤 Anderson W Ralston
- 👤 Wal Robert J Vander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:16
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/794; C07C45/00; C07C45/45; C07C45/46
Claims Analysis
Total Claims: 0
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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) | 1943-04-16 | 1943-10-16 | 1944-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-04-16 | 1947-10-16 | 1948-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-04-16 | 1951-10-16 | 1952-04-16 | $7700.00 | Window Closed / Lapsed |