US2734895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cochj
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:51
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A COMPLEX COBALT COMPOUND CONTAINING TWO MONOAZO DYESTUFFS SO BOUND IN COMPLEX UNION WITH A COBALT ATOM THAT THE PROPORTION OF THE NUMBER OF COBALT ATOMS BOUND IN COMPLEX UNION TO THE NUMBER OF MONOAZO DYESTUFF MOLECULES IS SMALLER THAN 1:1, IN WHICH COMPLEX COMPOUND BOTH MONOAZO DYESTUFFS PRESENT ARE 0:0''-DIHYDROXY-MONOAZO DYESTUFFS FREE FROM SULFONIC ACID AND CARBOXYLIC ACID GROUPS AND AT LEAST ONE OF THEM CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
70 words
A COMPLEX COBALT COMPOUND CONTAINING TWO MONOAZO DYESTUFFS SO BOUND IN COMPLEX UNION WITH A COBALT ATOM THAT THE PROPORTION OF THE NUMBER OF COBALT ATOMS BOUND IN COMPLEX UNION TO THE NUMBER OF MONOAZO DYESTUFF MOLECULES IS SMALLER THAN 1:1, IN WHICH COMPLEX COMPOUND BOTH MONOAZO DYESTUFFS PRESENT ARE 0:0''-DIHYDROXY-MONOAZO DYESTUFFS FREE FROM SULFONIC ACID AND CARBOXYLIC ACID GROUPS AND AT LEAST ONE OF THEM CORRESPONDS TO THE FORMULA
References Cited (Backward Citations)
US2305095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |