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US2434173A
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Process for dyeing wool with azo dye chrome complexes and chromic salts
Assignee: Wyeth Holdings LLC
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Filing: 1942-03-13
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Granted: 1948-01-06
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Expires: 1962-03-13
Abstract
No abstract record available.
Inventors
- 👤 Mackenzie Neil Mitchill
- 👤 Nestler Max Emerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:11
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/02; D06P1/10; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1854077A
Cited
US2000794A
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US1259499A
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CH86851A
Cited
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Cited
US1828737A
Cited
DE575112C
Cited
US2171828A
Cited
US2134453A
Cited
US2173410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |