US3196080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Visual and radiographic contrast media and method of use
Assignee: Individual
•
Filing: 1963-02-06
•
Granted: 1965-07-20
•
Expires: 1983-02-06
Abstract
No abstract record available.
Inventors
- 👤 Nicholas G Demy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:35
CPC Classifications
A; A61; A61K; A61K49/00; A61K49/04; A61K49/0433; A61K49/0447
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A RADIOGRAPHIC CONTRACT MEDIUM CONSISTING ESSENTIALLY OF I-(1,4-PHENYLENE)-CH(-CH3)-CH2-(CH2)6-O-O-O-CH2-CH3 HAVING ABOUT 1% BY WEIGHT OF A COLORING AGENT DISSOLVED THEREIN, SAID COLORING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF: 1-4 BIS (P-TOLUNO) ANTHRAQUINONE; 1-HYDROXY-4-P-TOLUINO ANTHRAQUINONE; AND A METALLIC SALT OF ALKANNIN, C16H10O5.
Claim 2
Dependent Claim
42 words
A RADIOGRAPHIC CONTRACT MEDIUM CONSISTING ESSENTIALLY OF I-(1,4-PHENYLENE)-CH(-CH3)-CH2-(CH2)6-O-O-O-CH2-CH3 HAVING ABOUT 1% BY WEIGHT OF A COLORING AGENT DISSOLVED THEREIN, SAID COLORING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF: 1-4 BIS (P-TOLUNO) ANTHRAQUINONE; 1-HYDROXY-4-P-TOLUINO ANTHRAQUINONE; AND A METALLIC SALT OF ALKANNIN, C16H10O5.
References Cited (Backward Citations)
US2307187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |