US3661821A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous condensation products and method of preparing same
Assignee: Montedison SpA
•
Filing: 1970-05-15
•
Granted: 1972-05-09
•
Expires: 1990-05-15
Abstract
Abstract NEW CONDENSATION PRODUCTS COMPRISING AMINE-EPICHLORHYDRIN CONDENSATES MODIFIED BY FURTHER REACTION WITH ALIPHATIC POLYAMINE, OR ALIPHATIC IMINE OR WITH ALKYLATEING OR ARYLATING AGENTS AND PROCESS FOR PREPARING SAME. PARTICULARLY USEFUL AS TINCTORIAL MODIFIER FOR CRYSTALLINE POLYMERS. DYEABLE TEXTILE FIBERS PREPARED FROM COMPOSITION OF CRYSTALLINE POLYMERS AND CONDENSATION PRODUCTS.
Inventors
- 👤 Cornelio Caldo
- 👤 Giuseppe Cantatore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:25
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2618; C08G65/2621; C08G65/2624; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/022
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |