US2909566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides
Assignee: Monsanto Chemicals Ltd
•
Filing: 1955-09-15
•
Granted: 1959-10-20
•
Expires: 1975-09-15
Abstract
No abstract record available.
Inventors
- 👤 Angelo J Speziale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:17
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE STRUCTURE:
References Cited (Backward Citations)
US2711415A
Cited
US2176896A
Cited
US2338177A
Cited
US2338178A
Cited
US2390766A
Cited
US2337313A
Cited
US2516674A
Cited
US2569409A
Cited
US2647121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |