US3686140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane casting resins containing aryl oxyalkanols
Assignee: Bayer AG
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Filing: 1970-10-13
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Granted: 1972-08-22
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Expires: 1990-10-13
Abstract
Abstract SOLVENT-FREE POLYURETHANE CASTING RESINS ARE PREPARED BY MIXING A POLYISOCYANATE WITH A MIXTURE CONSISTING OF AN HYDROXYL-CONTAINING POLYOL AND AN ARYLOXYALKANOL. THESE RESINS ARE ESPECIALLY SUITED FOR USE AS FILLERS AND FOR THE MANUFACTURE OF MOLDED ARTICLES.
Inventors
- 👤 Hermann Gruber
- 👤 Robert Schmitz-Josten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:29
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/2815; C08G18/283; C08G18/2835; Y; Y10; Y10S; Y10S528/00; Y10S528/903; Y10S528/905
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |