US3070562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-forming polyamide dissolved in a solvent mixture containing formic acid and at least one other compound
Assignee: EIDP Inc
•
Filing: 1959-06-30
•
Granted: 1962-12-25
•
Expires: 1979-06-30
Abstract
No abstract record available.
Inventors
- 👤 Koller Charles Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:24
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J2377/00; C08J2377/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A DRY-SPINING COMPOSITION COMPRISING A FIBER-FORMING POLYAMIDE CONTAINING ESSENTIALLY RECURRING STRUCTURAL UNITS OF FORMULA
Claim 2
Dependent Claim
14 words
A DRY-SPINING COMPOSITION COMPRISING A FIBER-FORMING POLYAMIDE CONTAINING ESSENTIALLY RECURRING STRUCTURAL UNITS OF FORMULA
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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |