US2953539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition comprising a rubbery reaction product of an organic polyisocyanate and adihydroxy terminated polyester
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1957-11-04
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Granted: 1960-09-20
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Expires: 1977-11-04
Abstract
No abstract record available.
Inventors
- 👤 Orin C Keplinger
- 👤 Otto C Elmer
- 👤 Joe S Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:13
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4236; C08G18/4238; C08G18/83; C08G18/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A POLYESTER-URETHANE COMPOSITION COMPRISING A RUBBERY REACTION PRODUCT OF ABOUT 0.9 TO 1.5 EQUIVALENT WEIGHTS OF AN ORGANIC POLYISOCYANATE HAVING 2 TO 3 ISOCYANATE GROUPS, THE MAJOR PORTION OF WHICH IS AN ORGANIC DIISOCYANATE AND ABOUT ONE EQUIVALENT WEIGHT OF A DIHYDROXY TERMINATED POLYESTER HAVING A MOLECULAR WEIGHT OF AT LEAST 500, WHICH IS A REACTION PRODUCT OF AN ALIPHATIC DICARBOXYLIC ACID HAVING 5 TO 11 CARBON ATOMS WITH A MIXTURE OF GLYCOLS CONSISTING ESSENTIALLY OF ABOUT 30 TO 70 MOLE PERCENT OF BUTYLENE-1,4-GLYCOL AND 70-30 MOLE PERCENT OF AN ALKYLENE GLYCOL OF LESS THAN 4 CARBON ATOMS.
Claim 2
Dependent Claim
98 words
A POLYESTER-URETHANE COMPOSITION COMPRISING A RUBBERY REACTION PRODUCT OF ABOUT 0.9 TO 1.5 EQUIVALENT WEIGHTS OF AN ORGANIC POLYISOCYANATE HAVING 2 TO 3 ISOCYANATE GROUPS, THE MAJOR PORTION OF WHICH IS AN ORGANIC DIISOCYANATE AND ABOUT ONE EQUIVALENT WEIGHT OF A DIHYDROXY TERMINATED POLYESTER HAVING A MOLECULAR WEIGHT OF AT LEAST 500, WHICH IS A REACTION PRODUCT OF AN ALIPHATIC DICARBOXYLIC ACID HAVING 5 TO 11 CARBON ATOMS WITH A MIXTURE OF GLYCOLS CONSISTING ESSENTIALLY OF ABOUT 30 TO 70 MOLE PERCENT OF BUTYLENE-1,4-GLYCOL AND 70-30 MOLE PERCENT OF AN ALKYLENE GLYCOL OF LESS THAN 4 CARBON ATOMS.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |