Upgrade to enjoy subscriber-only features like email alerts and data export. See the Plans and Pricing

Serving leading biopharmaceutical companies globally:

Federal Trade Commission
Daiichi Sankyo
US Army
Express Scripts

Generated: October 23, 2017

DrugPatentWatch Database Preview

Details for Patent: 4,364,921

« Back to Dashboard

Summary for Patent: 4,364,921

Title: Novel triiodinated isophthalic acid diamides as nonionic X-ray contrast media
Abstract:New triiodinated isophthalic acid diamides of the formula ##STR1## wherein the amide residues --CO--N.R.sub.1 R.sub.2 and --CO--N.R.sub.3 R.sub.4 are different from each other and R.sub.1 is hydrogen or C.sub.1-6 alkyl, R.sub.2 is mono- or polyhydroxyalkyl, R.sub.3 is hydrogen or C.sub.1-6 alkyl, R.sub.4 is mono- or polyhydroxylalkyl, R.sub.5 is C.sub.1-6 alkyl or mono- or polyhydroxy-C.sub.1-6 -alkyl or C.sub.1-3 -alkoxy-C.sub.1-3 -alkyl, and R.sub.6 is hydrogen, C.sub.1-6 alkyl or mono- or polyhydroxyalkyl provide superior nonionic X-ray contrast media.
Inventor(s): Speck; Ulrich (Berlin, DE), Blaszkiewicz; Peter (Berlin, DE), Seidelmann; Dieter (Berlin, DE), Klieger; Erich (Berlin, DE)
Assignee: Schering, Aktiengesellschaft (Berlin & Bergkamen, DE)
Application Number:06/127,613
Patent Claim Types:
see list of patent claims
Compound; Composition; Use;

No matches for this query

Foreign Priority and PCT Information for Patent: 4,364,921

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany2909439Mar 08, 1979

International Patent Family for Patent: 4,364,921

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Spain489337► Subscribe
European Patent Office0015867► Subscribe
Egypt14530► Subscribe
Denmark159772► Subscribe
Denmark91880► Subscribe
Germany3060434► Subscribe
Germany2909439► Subscribe
Czechoslovakia226408► Subscribe
Australia5627280► Subscribe
Canada1130316► Subscribe
This preview shows a limited data set
Subscribe for full access, or try a Trial

The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

Export unavailable in trial.
Subscribe for complete access.

For more information try a trial or see the database preview and plans and pricing

Serving leading biopharmaceutical companies globally:

Fish and Richardson
Johnson and Johnson
Express Scripts

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

Copyright 2002-2017 thinkBiotech LLC
ISSN: 2162-2639

Secure SSL Encrypted
Privacy and Cookies
Terms & Conditions

Follow DrugPatentWatch:

Google Plus