US2833723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Siliceous particles having surfacecoating of-or groups, dispersed in volatile organic liquids
Assignee: EIDP Inc
•
Filing: 1955-05-27
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Granted: 1958-05-06
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Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Iler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
C; C09; C09D; C09D9/00; B; B01; B01J; B01J13/00; B01J13/0052; B01J13/0065; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/145; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/28; D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; D21H17/69
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSION IN A VOLATILE ORGANIC LIQUID HAVING A BOILING POINT NO HIGHER THAN 150*C., OF AN ORGANOPHILIC SOLID WHICH IS PREFERENTIALLY WETTED BY BUTANOL IN A BUTANOL-WATER MIXTURE AND WHICH COMPRISES A SUPERCOLLOIDAL SUBSTRATE COATED WITH -OR GROUPS, THE SUBSTRATE HAVING A SURFACE OF SILICA AND HAVING A SPECIFIC SURFACE OF FROM 1 TO 900 SQUARE METERS PER GRAM, THE COATING OF -OR GROUPS BEING CHEMICALLY BOUND TO SAID SILICA, R BEING A HYDROCARBON RADICAL OF FROM 2 TO 18 CARBON ATOMS WHEREIN THE CARBON ATTACHED TO OXYGEN IS ALSO ATTACHED TO HYDROGEN, THE WEIGHT RATIO OF ORGANIC LIQUID TO ORGANOPHILIC SOLID BEING AT LEAST 1:1.
Claim 2
Dependent Claim
112 words
A COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSION IN A VOLATILE ORGANIC LIQUID HAVING A BOILING POINT NO HIGHER THAN 150*C., OF AN ORGANOPHILIC SOLID WHICH IS PREFERENTIALLY WETTED BY BUTANOL IN A BUTANOL-WATER MIXTURE AND WHICH COMPRISES A SUPERCOLLOIDAL SUBSTRATE COATED WITH -OR GROUPS, THE SUBSTRATE HAVING A SURFACE OF SILICA AND HAVING A SPECIFIC SURFACE OF FROM 1 TO 900 SQUARE METERS PER GRAM, THE COATING OF -OR GROUPS BEING CHEMICALLY BOUND TO SAID SILICA, R BEING A HYDROCARBON RADICAL OF FROM 2 TO 18 CARBON ATOMS WHEREIN THE CARBON ATTACHED TO OXYGEN IS ALSO ATTACHED TO HYDROGEN, THE WEIGHT RATIO OF ORGANIC LIQUID TO ORGANOPHILIC SOLID BEING AT LEAST 1:1.
References Cited (Backward Citations)
US2657149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |