US2944996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous condensation product of a polyepoxypolyether resin and a hydroxyl-terminated polyester and method of making same
Assignee: ATK Launch Systems LLC
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Filing: 1956-06-07
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Granted: 1960-07-12
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Expires: 1976-06-07
Abstract
No abstract record available.
Inventors
- 👤 Morris B Berenbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:49
CPC Classifications
C; C08; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A RESINOUS CONDENSATION PRODUCT OF (A) A RESINOUS REACTION PRODUCT OF AN EPIHALOHYDRIN WITH A MEMBER OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS WITH (B) A HYDROXYL-TERMINATED COPOLYESTER OF DIETHYLENE GLYCOL, PROPYLENE GLYCOL, ADIPIC ACID AND A MEMBER OF THE GROUP CONSISTING OF PHTHALIC ACID, ISOPHTHALIC ACID AND THE ANHYDRIDES THEREOF, THE RELATIVE MOLAR PROPORTION OF THE GLYCOLS IN THE COPOLYESTER BEING BETWEEN ABOUT 1:2 AND 2:1, THE RELATIVE MOLAR PROPORTION OF THE ACIDIC COMPONENTS IN THE COPOLYESTER BEING BETWEEN ABOUT 1:2 AND 2:1, THE TOTAL GLYCOLS IN THE COPOLYESTER BEING PRESENT IN A MOLAR EXCESS OF BETWEEN ABOUT 3.5 AND 30% IN RELATION TO THE ACIDIC COMPONENTS AND THE PORPORTION BY WEIGHT OF THE COPOLYESTER TO RESINOUS CONDENSATION PRODUCT RANGING BETWEEN ABOUT 2:1 AND 1:3.
Claim 2
Dependent Claim
129 words
A RESINOUS CONDENSATION PRODUCT OF (A) A RESINOUS REACTION PRODUCT OF AN EPIHALOHYDRIN WITH A MEMBER OF THE GROUP CONSISTING OF POLYHYDRIC PHENOLS AND POLYHYDRIC ALCOHOLS WITH (B) A HYDROXYL-TERMINATED COPOLYESTER OF DIETHYLENE GLYCOL, PROPYLENE GLYCOL, ADIPIC ACID AND A MEMBER OF THE GROUP CONSISTING OF PHTHALIC ACID, ISOPHTHALIC ACID AND THE ANHYDRIDES THEREOF, THE RELATIVE MOLAR PROPORTION OF THE GLYCOLS IN THE COPOLYESTER BEING BETWEEN ABOUT 1:2 AND 2:1, THE RELATIVE MOLAR PROPORTION OF THE ACIDIC COMPONENTS IN THE COPOLYESTER BEING BETWEEN ABOUT 1:2 AND 2:1, THE TOTAL GLYCOLS IN THE COPOLYESTER BEING PRESENT IN A MOLAR EXCESS OF BETWEEN ABOUT 3.5 AND 30% IN RELATION TO THE ACIDIC COMPONENTS AND THE PORPORTION BY WEIGHT OF THE COPOLYESTER TO RESINOUS CONDENSATION PRODUCT RANGING BETWEEN ABOUT 2:1 AND 1:3.
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) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |