US2983625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of silica coated fibers
Assignee: Akzo Nobel UK PLC
•
Filing: 1957-02-20
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Granted: 1961-05-09
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Expires: 1977-02-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Schappel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:27
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/77; D06M11/79; D06M15/00; D06M15/19; D06M15/37; D06M15/53; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A CELLULOSE FIBER HAVING DEPOSITED THEREON FROM ABOUT 0.3 TO ABOUT 2.0% BY WEIGHT OF A SILICA COATING IN ORDER TO IMPROVE THE SOIL RESISTANCE OF SAID FIBER, AND HAVING SUPERIMPOSED THEREON A COATING COMPRISING FROM ABOUT 0.2 TO ABOUT 0.4% BY WEIGHT OF A POLYETHYLENE OXIDE MODIFIED POLYHDROXY ALCOHOL-HIGHER FATTY ACID ESTER MELTING WITHIN THE RANGE OF 28* TO 45*C.
Claim 2
Dependent Claim
61 words
A CELLULOSE FIBER HAVING DEPOSITED THEREON FROM ABOUT 0.3 TO ABOUT 2.0% BY WEIGHT OF A SILICA COATING IN ORDER TO IMPROVE THE SOIL RESISTANCE OF SAID FIBER, AND HAVING SUPERIMPOSED THEREON A COATING COMPRISING FROM ABOUT 0.2 TO ABOUT 0.4% BY WEIGHT OF A POLYETHYLENE OXIDE MODIFIED POLYHDROXY ALCOHOL-HIGHER FATTY ACID ESTER MELTING WITHIN THE RANGE OF 28* TO 45*C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |