Patent US3540577A successfully refreshed from Google Patents.
US3540577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolymers of methacrylonitrile and lower alpha-olefins and packaging materials prepared therefrom
Assignee: Monsanto Co
•
Filing: 1967-06-23
•
Granted: 1970-11-17
•
Expires: 1987-06-23
Abstract
No abstract record available.
Inventors
- 👤 Quirino A Trementozzi
- 👤 Yoon Chai Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:57
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/50; B; B29; B29C; B29C49/00; B29C49/0005; C08F291/00; C08F291/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-11-16 | 1974-05-18 | 1974-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-16 | 1978-05-18 | 1978-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-16 | 1982-05-18 | 1982-11-17 | $7700.00 | Window Closed / Lapsed |