US3565570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
20 to 50% aqueous concentrate of trimethyl quaternary ammonium methylene copper phthalocyanine
Assignee: Honeywell International Inc
•
Filing: 1968-03-22
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Granted: 1971-02-23
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Expires: 1988-03-22
Abstract
Abstract CONCENTRATED, FLUID, AQUEOUS SOLUTIONS OF TRIMETHYL AMMONIUM SALTS OF POLYMETHYLENE COPPER PHTHALOCYANINE OF PARTICULAR UTILITY IN THE DYEING OF PAPER AND CHARACTERIZED BY A HIGH DEGREE OF WATER SOLUBILITY AND SUITABLE VISCOSITY PROPERTIES.
Inventors
- 👤 Chi K Dien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:08
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/32; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |