US2776956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soinhi
Assignee: —
•
Filing: —
•
Granted: 1957-01-08
•
Expires: 1974-01-08
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:41
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16; C09B45/18; C09B45/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A COMPLEX COBALT COMPOUND WHICH COMPRISES A COBALT ATOM BOUND IN COMPLEX UNION WITH TWO MONOAZO DYESTUFF MOLECULES OF WHICH ONE IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ORTHO:ORTHO''-DIHYDROXYAND AN ORTHO-HYDROXY-ORTHO''-AMINOMONOAZO DYESTUFF FREE FROM SULFONIC ACID AND CARBOXYLIC ACID GROUPS AND THE OTHER CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
50 words
A COMPLEX COBALT COMPOUND WHICH COMPRISES A COBALT ATOM BOUND IN COMPLEX UNION WITH TWO MONOAZO DYESTUFF MOLECULES OF WHICH ONE IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ORTHO:ORTHO''-DIHYDROXYAND AN ORTHO-HYDROXY-ORTHO''-AMINOMONOAZO DYESTUFF FREE FROM SULFONIC ACID AND CARBOXYLIC ACID GROUPS AND THE OTHER CORRESPONDS TO THE FORMULA
References Cited (Backward Citations)
US2674515A
Cited
US2565898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |