Patent US5250283A successfully refreshed from Google Patents.
US5250283A
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Organic contrast agent analog and method of making same
Assignee: Molecular Biosystems Inc
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Filing: 1992-03-18
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Granted: 1993-10-05
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Expires: 2012-03-18
Abstract
Abstract An organic contrast agent analog is derived to contain fluorine moieties. A method for making the organic contrast agent analog includes the steps of fluorinating the contrast agent analog for increasing the acidity of the analog to increase the choleretic activity of the analog and to render it less toxic.
Inventors
- 👤 James L. Barnhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:21
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/45; C07C233/53; C07C233/54; A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K49/00; A61K49/04; A61K49/0433; C07C229/00; C07C229/40; C07C229/42; C07C233/16; C07C233/24; C07C233/25; C07C233/34; C07C233/42; C07C233/43; C07C233/46; C07C233/47; C07C235/00; C07C235/02; C07C235/04; C07C235/16; C07C257/00; C07C257/10; C07C257/12; C07C317/00; C07C317/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A modified organic contrast analog, comprising alpha-fluoro-N-trifluoroacetyl-iopanoic acid.
Claim 2
Dependent Claim
8 words
A modified organic contrast analog, comprising alpha-fluoro-N-trifluoroacetyl-iopanoic acid.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-10-04 | 1997-04-05 | 1997-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-04 | 2001-04-05 | 2001-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-04 | 2005-04-05 | 2005-10-05 | $7700.00 | Window Closed / Lapsed |