US3852244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyetherquinoxalines
Assignee: General Electric Co
•
Filing: 1973-11-23
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Granted: 1974-12-03
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Expires: 1993-11-23
Abstract
Abstract Polyetherquinoxalines are provided which are useful as injection molding compounds. The polyetherquinoxalines are the product of reaction of organic tetramine and bis(aromatic ether aromatic diketones).
Inventors
- 👤 D Heath
- 👤 J Wirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:51
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/0683; C08G73/0694; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/70; C07C45/71; C07D; C07D241/00; C07D241/36; C07D241/38; C07D241/40; C07D241/42
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
28 words
MOLDABLE POLYMERIC MATERIALS HAVING RECURRING QUINOXALINE GROUPS AND AN INTRINSIC VISCOSITY OF FROM 0.1 TO 2.0 IN CHLOROFORM AT 25*C CONSISTING ESSENTIALLY OF THE FOLLOWING CHEMICALLY COMBINED UNITS
Claim 2
Dependent Claim
28 words
MOLDABLE POLYMERIC MATERIALS HAVING RECURRING QUINOXALINE GROUPS AND AN INTRINSIC VISCOSITY OF FROM 0.1 TO 2.0 IN CHLOROFORM AT 25*C CONSISTING ESSENTIALLY OF THE FOLLOWING CHEMICALLY COMBINED UNITS
Claim 3
Dependent Claim
11 words
A moldable polymeric material in accordance with claim 1, where R1is
Claim 4
Dependent Claim
12 words
A moldable polymeric material in accordance with claim 1, where R1 is
Claim 5
Dependent Claim
12 words
A moldable polymeric material in accordance with claim 1, where R2 is
Claim 6
Dependent Claim
12 words
A moldable polymeric material in accordance with claim 1, where R2 is
Claim 7
Dependent Claim
12 words
A moldable polymeric material in accordance with claim 1, where R2 is
Claim 8
Dependent Claim
12 words
A moldable polymeric material in accordance with claim 1, where R2 is
Claim 9
Dependent Claim
26 words
A polyetherquinoxaline having an intrinsic viscosity of from 0.1 to 2.0 in chloroform at 25* C and consisting essentially of chemically combined units of the formula
Claim 10
Dependent Claim
26 words
A polyetherquinoxaline having an intrinsic viscosity of from 0.1 to 2.0 in chloroform at 25* C and consisting essentially of chemically combined units of the formula
References Cited (Backward Citations)
US3661850A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |