US3485781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linking of water soluble or water-dispersible polyesters with dichromates
Assignee: NL SPENCER KELLOG Inc
•
Filing: 1968-01-05
•
Granted: 1969-12-23
•
Expires: 1988-01-05
Abstract
No abstract record available.
Inventors
- 👤 Walter A Wallman
- 👤 David D Taft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:08
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/91; C08G63/914
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3001961A
Cited
US3036934A
Cited
US3053693A
Cited
US3325428A
Cited
US3297605A
Cited
US3223659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |