US3073664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-soluble red dye composition and process
Assignee: Wyeth Holdings LLC
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Filing: 1960-03-14
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Granted: 1963-01-15
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Expires: 1980-03-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Penn F Spitzer
- 👤 Aagaard Fridtjof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:17
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0092; C09B67/0001; C09B67/0003; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR PREPARING A FREE-FLOWING, CRYSTALLINE, OIL SOLUBLE RED DYE COMPOSITION WHICH COMPRISES BLENDING 60 TO 85 PARTS BY WEIGHT OF OIL RED ED AND 40 TO 15 PARTS BY WEIGHT OF OIL RED N1700, HEATING THE BLEND TO MELT TEMPERATURES OF FROM ABOUT 170* TO ABOUT 240* C., SOLIDIFYING THE MELT IN PARTICULATE FORM AND HEATING THE PARTICULATED SOLID AT A TEMPERATURE FROM ABOUT 47* C. TO ABOUT 52* C. FOR A PERIOD OF AT LEAST SIXTEEN HOURS.
Claim 2
Dependent Claim
80 words
A PROCESS FOR PREPARING A FREE-FLOWING, CRYSTALLINE, OIL SOLUBLE RED DYE COMPOSITION WHICH COMPRISES BLENDING 60 TO 85 PARTS BY WEIGHT OF OIL RED ED AND 40 TO 15 PARTS BY WEIGHT OF OIL RED N1700, HEATING THE BLEND TO MELT TEMPERATURES OF FROM ABOUT 170* TO ABOUT 240* C., SOLIDIFYING THE MELT IN PARTICULATE FORM AND HEATING THE PARTICULATED SOLID AT A TEMPERATURE FROM ABOUT 47* C. TO ABOUT 52* C. FOR A PERIOD OF AT LEAST SIXTEEN HOURS.
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |