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Serving leading biopharmaceutical companies globally:

Citi
US Department of Justice
Dow
Chinese Patent Office
Colorcon
QuintilesIMS
Baxter
McKinsey
UBS
AstraZeneca

Generated: January 16, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,923,892

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Summary for Patent: 4,923,892
Title: Tricyclic aromatic compounds
Abstract:The present invention relates to compounds of formula I ##STR1## or a salt, ester or amide thereof; wherein R.sup.1 is --CH.sub.2 --CH.sub.2 --, CH.sub.2 --O-- or --O--CH.sub.2 --; R.sup.2 and R.sup.3 are the same or different and are each hydrogen, C.sub.1-4 alkyl or taken together with the nitrogen comprise a nitrogen-containing heterocyclic ring having four to six ring members; R.sup.4 is a single bond or a C.sub.1-7 bivalent aliphatic hydrocarbon group and may be joined to the aromatic ring system at the 2,3,8 or 9 positions; n is 0 to 3, and their use as antihistamine and antiasthma agents.
Inventor(s): Lever, Jr.; O. William (Skillman, NJ), Leighton; Harry J. (Chapel Hill, NC)
Assignee: Burroughs Wellcome Co. (Research Triangle Park, NC)
Application Number:07/356,884
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation; Compound; Dosage form;

Drugs Protected by US Patent 4,923,892

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted
Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Patent Submitted

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Foreign Priority and PCT Information for Patent: 4,923,892

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom8520662Aug 17, 1985

International Patents Family Members for US Patent 4,923,892

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria 125535 ➤ Subscribe
Austria 51867 ➤ Subscribe
Austria 97401 ➤ Subscribe
Germany 3650357 ➤ Subscribe
Germany 3670290 ➤ Subscribe
Germany 3689311 ➤ Subscribe
European Patent Office 0214779 ➤ Subscribe
European Patent Office 0316022 ➤ Subscribe
European Patent Office 0351887 ➤ Subscribe
Spain 2001519 ➤ Subscribe
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving leading biopharmaceutical companies globally:

US Army
Cerilliant
Citi
Harvard Business School
Argus Health
Chinese Patent Office
Express Scripts
Federal Trade Commission
Boehringer Ingelheim

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.

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