US2860480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerated cellulose structures and process for producing them
Assignee: EIDP Inc
•
Filing: 1956-04-18
•
Granted: 1958-11-18
•
Expires: 1976-04-18
Abstract
No abstract record available.
Inventors
- 👤 Cox Norman Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:48
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A REGENERATED CELLULOSE FILAMENT HAVING A CROSSSECTIONAL AREA COMPOSED OF AT LEAST 75% SKIN, THE REMAINDER BEING CORE, WHEN SUBJECTED TO X-RAY EXAMINATION, SAID FILAMENT BEING CHARACTERIZED BY A LATERAL ORDER OF 15-40 AND AN ORIENTATION VALUE ABOVE 12; AND SAID FILAMENT DISPLAYING A MINIMUM POINT IN THE FORCE VERSUS TEMPERATURE CURVE BETWEEN 60*C. AND 95*C.
Claim 2
Dependent Claim
56 words
A REGENERATED CELLULOSE FILAMENT HAVING A CROSSSECTIONAL AREA COMPOSED OF AT LEAST 75% SKIN, THE REMAINDER BEING CORE, WHEN SUBJECTED TO X-RAY EXAMINATION, SAID FILAMENT BEING CHARACTERIZED BY A LATERAL ORDER OF 15-40 AND AN ORIENTATION VALUE ABOVE 12; AND SAID FILAMENT DISPLAYING A MINIMUM POINT IN THE FORCE VERSUS TEMPERATURE CURVE BETWEEN 60*C. AND 95*C.
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) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |