US3829530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oilless alkyds
Assignee: Celanese Corp
•
Filing: 1972-04-14
•
Granted: 1974-08-13
•
Expires: 1992-04-14
Abstract
Abstract AN OILLESS ALKYD OF PROVIDING SUPERIOR COATINGS CONTAINING AN INTERPOLYMER OF A POLYOL HAVING 3 TO 4 HYDROXYL FUNCTIONAL GROUPS, AN ALIPHATIC DIOL HAVING 5 TO7 CARBON ATOMS AND A PHTHALIC ANHYDRIDE COMPONENT.
Inventors
- 👤 T Powanda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:04
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08L; C08L67/00
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |