US3814657A
Expired / Lapsed
US
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Azidoformates and their use
Assignee: Hercules LLC
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Filing: 1972-03-03
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Granted: 1974-06-04
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Expires: 1992-03-03
Abstract
Abstract DISCLOSED IS A PROCESS OF IMPROVING THE ADHESION OF PPOLYESTER MATERIAL TO VARIOUS OTHER METERIALS USING THE AZIDOFORMATES OF OMEGA-JYDROXYALKYL PHTHALTES, THEIR RELATED LOW MOLECULAR WEIGHT CONDENSATION POLYMERS AND THEIR MIXTURES REPRESENTED BY THE GENERAL FORMULA N3-CO-(O-R-OOC-PHENYLENE-CO)X-O-R-OOC-N3 WHERE R IS AN ALKYLENE RADICAL CONTAINING 2 TO 10 CARBON ATOMS AND X IS AN INTEGER OF FROM ABOUT 1 TO ABOUT 10. IN PARTICULAR, THERE IS DISCLOSED A PROCESS OF IMPROVING THE ADHESION OF POLYESTER TIRE CORD TO RUBBER TIRE STOCK USING THE SAID AZIDOFORMATE COMPOUNDS.
Inventors
- 👤 J Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:07
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08G; C08G63/00; C08G63/91; C08G63/914; C08G63/916; C08J5/12; C08J5/124; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/249933; Y10T428/249934; Y10T428/249936; Y10T428/31504; Y10T428/31551; Y10T428/31616; Y10T428/31678; Y10T428/31681; Y10T428/31707; Y10T428/31786
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |