US3147264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-hydroxyalkylamino-1, 8-naphthalic acid imide dye salts of oil-solubilizing quaternary ammonium halides
Assignee: Wyeth Holdings LLC
•
Filing: 1961-03-10
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Granted: 1964-09-01
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:48
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/003; C09; C09B; C09B69/00; C09B69/02; C09B69/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A WATER-INSOLUBLE COLORED SALT, SOLUBLE IN NON-POLAR SOLVENTS, COMPRISING A DYE SALT PRODUCED BY MELTING TOGETHER AT ABOUT 100*-250*F. UNTIL A CLEAR HEXANESOLUBLE PRODUCT IS OBTAINED (A) FROM ABOUT 1.25 TO ABOUT 10 MOLES AND SUFFICIENT TO COMPLETELY REACT WITH THE DYE OF A HALIDE OF THE FORMULA
Claim 2
Dependent Claim
48 words
A WATER-INSOLUBLE COLORED SALT, SOLUBLE IN NON-POLAR SOLVENTS, COMPRISING A DYE SALT PRODUCED BY MELTING TOGETHER AT ABOUT 100*-250*F. UNTIL A CLEAR HEXANESOLUBLE PRODUCT IS OBTAINED (A) FROM ABOUT 1.25 TO ABOUT 10 MOLES AND SUFFICIENT TO COMPLETELY REACT WITH THE DYE OF A HALIDE OF THE FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |