US3336236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous colloidal sio sols stabilized against bacterial contamination
Assignee: ChampionX LLC
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Filing: 1964-12-23
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Granted: 1967-08-15
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Expires: 1984-12-23
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Michalski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:23
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/146; C01B33/148; C01B33/1485
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A COMPOSITION STABILIZED AGAINST BACTERIAL CONTAMINATION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF AN AQUEOUS COLLOIDAL SILICA SOL CHARACTERIZED AS CONTAINING FROM 20 TO 60% BY WEIGHT OF SILICA, EXPRESSED AS SIO2, AN AVERAGE PARTICLE SIZE DIAMETER OF FROM ABOUT 5 TO 150 MILLIMICRONS AND A PH WITHIN THE RANGE OF FROM 8.0 TO 11.0 AND FROM 10-1,000 PARTS PER MILLION PARTS BY WEIGHT OF THE SOL OF SODIUM CHLORITE.
Claim 2
Dependent Claim
70 words
A COMPOSITION STABILIZED AGAINST BACTERIAL CONTAMINATION CONSISTING ESSENTIALLY OF A MAJOR AMOUNT OF AN AQUEOUS COLLOIDAL SILICA SOL CHARACTERIZED AS CONTAINING FROM 20 TO 60% BY WEIGHT OF SILICA, EXPRESSED AS SIO2, AN AVERAGE PARTICLE SIZE DIAMETER OF FROM ABOUT 5 TO 150 MILLIMICRONS AND A PH WITHIN THE RANGE OF FROM 8.0 TO 11.0 AND FROM 10-1,000 PARTS PER MILLION PARTS BY WEIGHT OF THE SOL OF SODIUM CHLORITE.
References Cited (Backward Citations)
US2071091A
Cited
US3148110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |