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Serving hundreds of leading biopharmaceutical companies globally:

Julphar
Federal Trade Commission
Teva
Chubb
Mallinckrodt
Deloitte
Farmers Insurance
McKesson
UBS

Generated: May 24, 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 Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 4,923,892
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

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Serving hundreds of leading biopharmaceutical companies globally:

Merck
Fish and Richardson
McKesson
US Army
AstraZeneca
Julphar
Fuji
Medtronic
Daiichi Sankyo

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