US2825655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for stabilizing polysaccharide xanthates and products
Assignee: EIDP Inc
•
Filing: 1955-06-29
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Granted: 1958-03-04
•
Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey W Meadows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:26
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/22; C08B; C08B9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A METHOD FOR IMPROVING THE STABILITY OF A WATER SOLUBLE POLYACCHARIDE ZANTHATE HAVING A WATER CONTENT LESS THAN ABOUT 10% BY WEIGHT WHICH COMPRISES MIXING SAID POLYSACCHARIDE ZANTHATE WITH AT LEAST 5% OF ITS WEIGHT OF A SOLID PARTICULATE NON-ACID DESICCANT TO OBTAIN AN INTIMATE MIXTURE OF SAID MATERIALS IN PULVERULENT FORM.
Claim 2
Independent Claim
52 words
A METHOD FOR IMPROVING THE STABILITY OF A WATER SOLUBLE POLYACCHARIDE ZANTHATE HAVING A WATER CONTENT LESS THAN ABOUT 10% BY WEIGHT WHICH COMPRISES MIXING SAID POLYSACCHARIDE ZANTHATE WITH AT LEAST 5% OF ITS WEIGHT OF A SOLID PARTICULATE NON-ACID DESICCANT TO OBTAIN AN INTIMATE MIXTURE OF SAID MATERIALS IN PULVERULENT FORM.
References Cited (Backward Citations)
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US1880041A
Cited
US2051051A
Cited
US2054300A
Cited
US2629493A
Cited
US2761247A
Cited
US2805119A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |