Patent US2341906A successfully refreshed from Google Patents.
Patent US2733230A successfully refreshed from Google Patents.
US2733230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:44
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A LINEAR FILM-FORMING POLYAMIDE PRODUCED BY THE CONDENSATION OF FROM AT LEAST 4.4 PERCENT TO AT MOST 25 PERCENT OF 1,4-DIAMINOCYCLOHEXANE WITH ABOUT AN EQUIMOLECULAR AMOUNT OF ADIPIC ACID, E-CAPROLACTAM, AND HEMAMETHLENE DIAMINE ADIPATE.
Claim 2
Dependent Claim
34 words
A LINEAR FILM-FORMING POLYAMIDE PRODUCED BY THE CONDENSATION OF FROM AT LEAST 4.4 PERCENT TO AT MOST 25 PERCENT OF 1,4-DIAMINOCYCLOHEXANE WITH ABOUT AN EQUIMOLECULAR AMOUNT OF ADIPIC ACID, E-CAPROLACTAM, AND HEMAMETHLENE DIAMINE ADIPATE.
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) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |