US3764263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanent press fabric resin from crotonylidenediurea glyoxal formal dehyde aminoplast material
Assignee: Celanese Corp
•
Filing: 1971-04-20
•
Granted: 1973-10-09
•
Expires: 1991-04-20
Abstract
Abstract CROTONYLIDENEDIUREA IS REACTED WITH GLYOXAL AND THE RESULTING ADDUCT METHYLOLATED WITH FORMALDEHYDE TO PRODUCE THE CORRESPONDING TRIMETHYLOLATED DERIVATIVE WHICH EXHIBITS VERY DESIRABLE PROPERTIES AS A PERMANENT PRESS RESISN FOR FABRICS.
Inventors
- 👤 T Powanda
- 👤 L Holzman
- 👤 J Tracy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:12
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/08; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/10; C08G12/12; C08G12/26; C08G12/28; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |