US3309334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric copolyesters of phthalic acids, a bis-(hydroxyphenyl)alkane and a diphenolic acid
Assignee: General Electric Co
•
Filing: 1963-07-12
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Granted: 1967-03-14
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Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 Fred F Holub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:14
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/32; C; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/193; C08G63/195; C08G63/60; C08G63/605; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18; H01G4/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
127 words
A CPOLYMERIC COPOLYESTER OF (1) A PHTHALIC ACID COMPRISING 50 TO 100 MOLE PERCENT ISOPHTHALIC ACID AND 50 TO 0 MOLE PERCENT TEREPHTHALIC ACID, (2) A BIS(HYDOXYPHENYL)ALKANE WHEREIN THE PHENYL NUCLEAUS HAS FROM 0 TO 2 LOWER ALKYL SUBSTITUENTS AND THE ALKANE GROUP CONTAINS FROM 1 TO 5 CARBON ATOMS, AND (3) A DIPHENOLIC ACID IN AN AMOUNT OF FROM 1 TO 15 MOLE PERCENT BASED ON THE TOTAL MOLES OF BIS(HYDROXYPHENYL)ALKANE AND DIPHENOLIC ACID, SAID DIPHENOLIC ACID HAVING THE FORMULA (R1)N-((HO-)-PHENYLENE)-C(-R2)(-R3-COOH)-((HO-)PHENYLENE)-(R1)N WHERE N IS ONE OF THE INTEFERS 0, 1, 2, EACH R1 IS A LOWER ALKYL RADICAL, R2 IS AN ALKYL RADICAL, R3 IS AN ALKYLENE RADICAL CONTAINING AT LEAST TWO CARBON ATOMS AND THE HYDROXYL GROUP IS IN THE PATA POSITION WHEREN IS 0.
Claim 2
Dependent Claim
127 words
A CPOLYMERIC COPOLYESTER OF (1) A PHTHALIC ACID COMPRISING 50 TO 100 MOLE PERCENT ISOPHTHALIC ACID AND 50 TO 0 MOLE PERCENT TEREPHTHALIC ACID, (2) A BIS(HYDOXYPHENYL)ALKANE WHEREIN THE PHENYL NUCLEAUS HAS FROM 0 TO 2 LOWER ALKYL SUBSTITUENTS AND THE ALKANE GROUP CONTAINS FROM 1 TO 5 CARBON ATOMS, AND (3) A DIPHENOLIC ACID IN AN AMOUNT OF FROM 1 TO 15 MOLE PERCENT BASED ON THE TOTAL MOLES OF BIS(HYDROXYPHENYL)ALKANE AND DIPHENOLIC ACID, SAID DIPHENOLIC ACID HAVING THE FORMULA (R1)N-((HO-)-PHENYLENE)-C(-R2)(-R3-COOH)-((HO-)PHENYLENE)-(R1)N WHERE N IS ONE OF THE INTEFERS 0, 1, 2, EACH R1 IS A LOWER ALKYL RADICAL, R2 IS AN ALKYL RADICAL, R3 IS AN ALKYLENE RADICAL CONTAINING AT LEAST TWO CARBON ATOMS AND THE HYDROXYL GROUP IS IN THE PATA POSITION WHEREN IS 0.
Claim 3
Dependent Claim
39 words
AN EXTRUDABLE COMPOSITION COMRPISING FROM 10 TO 40 PERCENT BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BIPHENYL AND DIPHENYL ETHER AND FROM 90 TO 60 PERCENT BY WEIGHT OF A POLYMERIC COPOLYESTER OF CLAIM 1.
References Cited (Backward Citations)
US2936296A
Cited
US2907736A
Cited
US2917414A
Cited
GB863704A
Cited
US3036990A
Cited
US3160602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |