US3458481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of high molecular weight cross-linked polyamides
Assignee: Bayer AG
•
Filing: 1965-09-27
•
Granted: 1969-07-29
•
Expires: 1985-09-27
Abstract
No abstract record available.
Inventors
- 👤 Ernst Reichold
- 👤 Walter Bockmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0025
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2333639A
Cited
US2393972A
Cited
US2430859A
Cited
US2631993A
Cited
US3155637A
Cited
GB880761A
Cited
US3203934A
Cited
US3299009A
Cited
US3294755A
Cited
US3329657A
Cited
GB1024407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |