US2950207A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of filaments having improved whiteness
Assignee: Akzona Inc
•
Filing: 1957-11-07
•
Granted: 1960-08-23
•
Expires: 1977-11-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:53
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/12; D01F2/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A VISCOSE SPINNING COMPOSITION CONTAINING TITANIUM DIOXIDE IN THE AMOUNT OF AT LEAST 0.001% BY WEIGHT BASED ON THE CELLULOSE IN THE VISCOSE, A BLUE ORGANIC PIGMENT IN THE AMOUNT OF 1 TO 10 P.P.M. BASED ON THE CELLULOSE IN THE VISCOSE, AND A VIOLET ORGANIC PIGMENT IN THE AMOUNT OF 1 TO 10 P.P.M. BASED ON THE CELLULOSE IN THE VISCOSE, SAID ORGANIC PIGMENTS BEING COMPATIBLE WITH SAID SPINNING COMPOSITION AND BEING PRESENT IN A SYNERGISTIC MIXTURE THAT IMPARTS A WHITENING EFFECT OF FILAMENT WHICH WHEN SPUN FROM SAID COMPOSITION OTHERWISE WOULD HAVE A SLIGHT YELLOW TINGE.
Claim 2
Dependent Claim
98 words
A VISCOSE SPINNING COMPOSITION CONTAINING TITANIUM DIOXIDE IN THE AMOUNT OF AT LEAST 0.001% BY WEIGHT BASED ON THE CELLULOSE IN THE VISCOSE, A BLUE ORGANIC PIGMENT IN THE AMOUNT OF 1 TO 10 P.P.M. BASED ON THE CELLULOSE IN THE VISCOSE, AND A VIOLET ORGANIC PIGMENT IN THE AMOUNT OF 1 TO 10 P.P.M. BASED ON THE CELLULOSE IN THE VISCOSE, SAID ORGANIC PIGMENTS BEING COMPATIBLE WITH SAID SPINNING COMPOSITION AND BEING PRESENT IN A SYNERGISTIC MIXTURE THAT IMPARTS A WHITENING EFFECT OF FILAMENT WHICH WHEN SPUN FROM SAID COMPOSITION OTHERWISE WOULD HAVE A SLIGHT YELLOW TINGE.
References Cited (Backward Citations)
US2563493A
Cited
US2191947A
Cited
US2424778A
Cited
GB611510A
Cited
US2690398A
Cited
US2706689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |