US4730066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complex for enhancing magnetic resonance imaging
Assignee: Mallinckrodt Inc
•
Filing: 1986-05-06
•
Granted: 1988-03-08
•
Expires: 2006-05-06
Abstract
Abstract Complexes of iron(II), iron(III), manganese(II), manganese(III), gadolinium(III) or chromium(III) and a compound of the formula: ##STR1## wherein m=2, 3, 4, or 5, are useful for enhancing magnetic resonance images of body organs and tissues, such as magnetic resonance images of the hepatobiliary system. An illustrative complex of this type is monosodium [ethylenediamine-di(o-hydroxyphenylaceto)]iron(III) hydrate.
Inventors
- 👤 David H. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:55
CPC Classifications
A; A61; A61K; A61K49/00; A61K49/06; Y; Y10; Y10T; Y10T436/00; Y10T436/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A complex for use in enhancing magnetic resonance images of body organs and tissues, said complex comprising a central metal ion selected from the group consisting of manganese(II), manganese(III), gadolinium(III) and chromium(III) and a compound of the formula: ##STR4## wherein m=2, 3, 4 or 5.
Claim 2
Dependent Claim
45 words
A complex for use in enhancing magnetic resonance images of body organs and tissues, said complex comprising a central metal ion selected from the group consisting of manganese(II), manganese(III), gadolinium(III) and chromium(III) and a compound of the formula: ##STR4## wherein m=2, 3, 4 or 5.
References Cited (Backward Citations)
US4472509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |