US3787469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyisocyanate adducts
Assignee: Eastman Kodak Co
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Filing: 1972-04-27
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Granted: 1974-01-22
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Expires: 1992-04-27
Abstract
Abstract POLYISOCYANATE ADDUCTS OF 1,3- AND 1,4-CYCLOHEXANEBIS(METHYLISOCYANATE) AND AN AMINOALCOHOL HAVING THE STRUCTURE H2N-(CH2)X-C(-Y)2-CH2-OH WHERE X IS 0 0R 1 OR 8 AND Y IS ALKYL CONTAINING 1 TO 4 CARBON ATOMS. THESE POLYISOCYANATE ADDUCTS ARE USEFUL IN THE PREPARATION OF POLYURTHANE COATINGS, ADHESIVES, FOAMS AND ELASTOMERS.
Inventors
- 👤 B Davis
- 👤 C Kibler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:06
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8006; C08G18/8041
Claims Analysis
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |