US3706714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane polyols
Assignee: Jefferson Chemical Co Inc
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Filing: 1971-02-02
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Granted: 1972-12-19
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Expires: 1991-02-02
Abstract
Abstract POLYURETHANE POLYOLS MAY BE PREPARED TO CONTAIN OXYPROPYLENE AND OXYETHYLENE LINKAGES AND ALSO, PENDANT ALKYL CHAINS OF 8 TO 20 CARBON ATOMS. THE POLYOLS MAY BE USED TO PREPARE POLYURETHANE PRODUCTS OF UNUSUAL SOFTNESS AND LOW RESISTANCE TO TEMPORARY DEFORMATIN USEFUL AS CAULKS, SEALANTS, GASKETS, AND OTHER SPACE FILLING MATERIALS.
Inventors
- 👤 Rodney Frederick Lloyd
- 👤 Michael Cuscurida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4858; C08G18/08; C08G18/16; C08G18/22; C08G18/4833; C08G18/4837; C08G2190/00
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |