Patent US109641A successfully refreshed from Google Patents.
Patent US4479660A successfully refreshed from Google Patents.
Patent AT365819B successfully refreshed from Google Patents.
Patent US2934449A successfully refreshed from Google Patents.
US2934449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of pigmented viscose rayon
Assignee: Akzona Inc
•
Filing: 1957-05-24
•
Granted: 1960-04-26
•
Expires: 1977-05-24
Abstract
No abstract record available.
Inventors
- 👤 Frederick B Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:19
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/12; D01F2/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A VISCOSE SPINNING SOLUTION FOR THE MANUFACTURE OF LUSTROUS SOLUTION-COLORED RAYON FILAMENTS HAVING DISPERSED THEREIN AN ORGANIC COLORING PIGMENT AND CONTAINING A SMALL AMOUNT OF A SUBSTANTIALLY WHITE INORGANIC DELUSTERING PIGMENT, SAID SMALL AMOUNT BEING SUFFICIENT TO PREVENT DICHROISM BUT INSUFFICIENT TO DELUSTER THE SPUN FILAMENTS.
Claim 2
Dependent Claim
46 words
A VISCOSE SPINNING SOLUTION FOR THE MANUFACTURE OF LUSTROUS SOLUTION-COLORED RAYON FILAMENTS HAVING DISPERSED THEREIN AN ORGANIC COLORING PIGMENT AND CONTAINING A SMALL AMOUNT OF A SUBSTANTIALLY WHITE INORGANIC DELUSTERING PIGMENT, SAID SMALL AMOUNT BEING SUFFICIENT TO PREVENT DICHROISM BUT INSUFFICIENT TO DELUSTER THE SPUN FILAMENTS.
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) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |