The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2009
Filed:
Sep. 24, 2004
Applicants:
Kwok-yin Wong, Hong Kong, CN;
Chi Huang, Wuhan, CN;
Cheuk-sang Kwok, Toronto, CA;
Victor Snieckus, Kingston, Ontario, CA;
Inventors:
Kwok-Yin Wong, Hong Kong, CN;
Chi Huang, Wuhan, CN;
Cheuk-Sang Kwok, Toronto, CA;
Victor Snieckus, Kingston, Ontario, CA;
Assignees:
The Hong Kong Polytechnic University, Hong Kong Sar, CN;
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B 47/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Metal chelates are useful for improving the contrast of X-ray, ultrasound, radionuclide and magnetic resonance (MR) images. However, the metal complexes must be stable and inert so that toxicity resulting from dissociation in the body can be minimized. This invention provides 16-member ring metal chelates that can provide a charge balanced metal complex having improved stability, especially for gadolinium(III) and samarium (III).