US3574154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose acetate butyrate coating compositions and coated products
Assignee: Rohm and Haas Co
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Filing: 1968-07-11
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Granted: 1971-04-06
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Expires: 1988-07-11
Abstract
Abstract THE PRESENT INVENTION IS CONCERNED WITH IMPROVED COATING COMPOSITIONS BASED ON CELLULOSE ACETATE BUTYRATE PLASTICIZED WITH DIISOCYANATE-EXTENDED POLYESTERS HAVING A MOLECULAR WEIGHT OF AT LEAST 8000. THE INVENTION ALSO INCLUDES FLEXIBLE PRODUCTS, SUCH AS SUBSTITUTE LEATHER HAVING TOPCOATINGS THEREON OF OUTSTANDING FLEXIBILITY MADE FROM THESE COMPOSITIONS.
Inventors
- 👤 Robert S Shaw
- 👤 Bayard V Tirrill
- 👤 John L Gardon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:08
CPC Classifications
C; C09; C09D; C09D167/00; C09D167/02; C09D175/00; C09D175/04; C09D175/06
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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |