US2709697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallized dyes derived from hydroquinone mono-ethers
Assignee: Wyeth Holdings LLC
•
Filing: 1949-06-17
•
Granted: 1955-05-31
•
Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
- 👤 Seruto Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:47
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A METAL COMPLEX OF A MONOAZO DYESTUFF OF THE STRUCTURE
Claim 2
Dependent Claim
10 words
A METAL COMPLEX OF A MONOAZO DYESTUFF OF THE STRUCTURE
References Cited (Backward Citations)
GB191100073A
Cited
US1011770A
Cited
US1867083A
Cited
US1947945A
Cited
US2008602A
Cited
US2191040A
Cited
US2495244A
Cited
US2599147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-30 | 1958-11-29 | 1959-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-30 | 1962-11-29 | 1963-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-30 | 1966-11-29 | 1967-05-31 | $7700.00 | Window Closed / Lapsed |