US3475339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersion of photochromic mercuric complexes of diaryl thiocarbazones and dyeing procedure employing same
Assignee: Wyeth Holdings LLC
•
Filing: 1965-08-17
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Granted: 1969-10-28
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Expires: 1985-08-17
Abstract
No abstract record available.
Inventors
- 👤 Walter Henry Foster Jr
- 👤 John Mark Dowd Jr
- 👤 Ralph Arthur Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:07
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/725; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735783A
Cited
US2921407A
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US2976259A
Cited
US3004896A
Cited
US3275595A
Cited
US3361706A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |