US2765294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides containing tertiary aminomethyl groups
Assignee: EIDP Inc
•
Filing: 1953-06-29
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Granted: 1956-10-02
•
Expires: 1973-06-29
Abstract
No abstract record available.
Inventors
- 👤 England David Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:17
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A CONDENSATION POLYMER OF 2-TERTIARY-AMINOMETHYL5-METHYL-1,6-HEXANEDIAMINE AND A DISBAIC CARBOXYLIC ACID HAVING 4 TO 12 CARBONS BETWEEN THE TWO CARBOXYL GROUPS.
Claim 2
Dependent Claim
20 words
A CONDENSATION POLYMER OF 2-TERTIARY-AMINOMETHYL5-METHYL-1,6-HEXANEDIAMINE AND A DISBAIC CARBOXYLIC ACID HAVING 4 TO 12 CARBONS BETWEEN THE TWO CARBOXYL GROUPS.
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) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |