US3294759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear copolyamides resistant to boiling water
Assignee: WR Grace and Co
•
Filing: 1963-08-26
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Granted: 1966-12-27
•
Expires: 1983-08-26
Abstract
No abstract record available.
Inventors
- 👤 Gabler Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:24
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A LINEAR COPOLYAMIDE OF 3-AMINOMETHYL-3,5,5-TRIMETHYCYCLOHEXYLAMINE AND A SUBSTANTIALLY EQUIMOLAR AMOUNT OF AN ACID MIXTURE CONSISTING OF ADIPIC ACID AND AN AROMATIC DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID, ISOPHTHALIC ACID AND MIXTURES THEREOF.
Claim 2
Dependent Claim
36 words
A LINEAR COPOLYAMIDE OF 3-AMINOMETHYL-3,5,5-TRIMETHYCYCLOHEXYLAMINE AND A SUBSTANTIALLY EQUIMOLAR AMOUNT OF AN ACID MIXTURE CONSISTING OF ADIPIC ACID AND AN AROMATIC DICARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF TEREPHTHALIC ACID, ISOPHTHALIC ACID AND MIXTURES THEREOF.
References Cited (Backward Citations)
US2130523A
Cited
US2327131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |