US3808167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnating resins
Assignee: BASF SE
•
Filing: 1972-04-12
•
Granted: 1974-04-30
•
Expires: 1992-04-12
Abstract
Abstract MELAMINE/FORMALDEHYDR IMPREGNATING RESINS, SUITABLE FOR EXAMPLE FOR THE MANUFACTURE OF LAMINATES AND COATED WOOD MATERIALS, CONTAINING A SUBSTITUTED PROPIONAMIDE, E.G. 3-BUTOXY- OR 3-THIOETHYL-PROPIONAMIDE, TO IMPROVE THEIR FLOW, AND A PROCESS FOR THEIR MANUFACTURE,
Inventors
- 👤 H Petersen
- 👤 B Magerkurth
- 👤 O Froede
- 👤 L Lelgemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:44
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34
Claims Analysis
Total Claims: 0
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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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |