Patent US3312653A successfully refreshed from Google Patents.
US3312653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solution of the reaction product of a linear polycarbonate, an organic diisocyanate and water
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1964-11-09
•
Granted: 1967-04-04
•
Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Henry A Pace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:18
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/44; C08J3/09; C08J3/091; C08J3/096; C08J3/097; C08G2110/00; C08G2110/0008; C08G2110/0025; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
88 words
A SOLUTION OF A CURED POLYURETHANE POLYCARBONATE IN A SOLVENT SELECTED FROM THE CLASS CONSISTING OF A DIAKYL AMIDE HAVING AN ALKYL RADICAL CONTAINING FROM ABOUT 1 TO 10 CARBON ATOMS AND DIAKYL SULFOXIDE HAVING AN ALKYL RADICAL CONTAINING FROM ABOUT 1 TO 10 CARBON ATOMS, SAID CURED POLYURETHANE POLYCARBONATE BEING THE FOAMED AND CURED PRODUCT OF A REACTION MIXTURE COMPRISING ABOUT ONE MOL OF A HYDROXYL TERMINATED POLYCARBONATE OF ABOUT 800 TO 5000 MOLECULAR WEIGHT, 1 TO 6 MOLES OF AN ORGANIC POLYISOCYANATE AND A BLOWING AGENT.
Claim 2
Dependent Claim
88 words
A SOLUTION OF A CURED POLYURETHANE POLYCARBONATE IN A SOLVENT SELECTED FROM THE CLASS CONSISTING OF A DIAKYL AMIDE HAVING AN ALKYL RADICAL CONTAINING FROM ABOUT 1 TO 10 CARBON ATOMS AND DIAKYL SULFOXIDE HAVING AN ALKYL RADICAL CONTAINING FROM ABOUT 1 TO 10 CARBON ATOMS, SAID CURED POLYURETHANE POLYCARBONATE BEING THE FOAMED AND CURED PRODUCT OF A REACTION MIXTURE COMPRISING ABOUT ONE MOL OF A HYDROXYL TERMINATED POLYCARBONATE OF ABOUT 800 TO 5000 MOLECULAR WEIGHT, 1 TO 6 MOLES OF AN ORGANIC POLYISOCYANATE AND A BLOWING AGENT.
Claim 3
Dependent Claim
11 words
THE SOLUTION OF CLAIM 1 WHEREIN THE SOLVENT IS DIMETHYL SULFOXIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |