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US2772984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigment
Assignee: Honeywell International Inc
•
Filing: 1952-07-12
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Granted: 1956-12-04
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Expires: 1972-07-12
Abstract
No abstract record available.
Inventors
- 👤 Bertram M Helfaer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:56
CPC Classifications
C; C09; C09B; C09B67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
PIGMENTS OF IMPROVED DISPERSIBILITY AND TINCTORIAL VALUE COMPRISING A WATER-INSOLUBLE ORGANIC COLOR IN FINELY DIVIDED FORM ADMIXED WITH AN ACTIVATED SILICA GEL HAVING A SURFACE AREA OF AT LEAST 100 SQUARE METERS PER GRAM, AN OIL ABSORPTION VALUE OF AT LEAST 100, AND AN AVERAGE PARTICLE SIZE OF FROM 0.01 TO 50 MICRONS, SAID SILICA GEL BEING PRESENT IN AMOUNT OF FROM 1/20 TO 20 PARTS BY WEIGHT PER PART BY WEIGHT OF ORGANIC COLOR.
Claim 2
Dependent Claim
75 words
PIGMENTS OF IMPROVED DISPERSIBILITY AND TINCTORIAL VALUE COMPRISING A WATER-INSOLUBLE ORGANIC COLOR IN FINELY DIVIDED FORM ADMIXED WITH AN ACTIVATED SILICA GEL HAVING A SURFACE AREA OF AT LEAST 100 SQUARE METERS PER GRAM, AN OIL ABSORPTION VALUE OF AT LEAST 100, AND AN AVERAGE PARTICLE SIZE OF FROM 0.01 TO 50 MICRONS, SAID SILICA GEL BEING PRESENT IN AMOUNT OF FROM 1/20 TO 20 PARTS BY WEIGHT PER PART BY WEIGHT OF ORGANIC COLOR.
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) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |