CA Patent

CA2248784A1 — Oxazolone derivatives and their use

Assigned to Takeda Pharmaceutical Co Ltd · Expires 1997-12-31 · 28y expired

What this patent protects

An anti-Helicobacter pylori agent comprising a compound represented by formula (I) wherein A represents an aromatic ring group which may be substituted; R1 and R2, whether identical or not, each represents a hydrogen atom or a hydrocarbon group which may be substituted; R3 and R4…

USPTO Abstract

An anti-Helicobacter pylori agent comprising a compound represented by formula (I) wherein A represents an aromatic ring group which may be substituted; R1 and R2, whether identical or not, each represents a hydrogen atom or a hydrocarbon group which may be substituted; R3 and R4, whether identical or not, each represents a hydrogen atom, a hydrocarbon group which may be substituted, an acyl group, a carbamoyl group which may be substituted, or a carboxyl group which may be esterified; or a salt thereof.

Drugs covered by this patent

Patent Metadata

Patent number
CA2248784A1
Jurisdiction
CA
Classification
—
Expires
1997-12-31
Drug substance claim
No
Drug product claim
No
Assignee
Takeda Pharmaceutical Co Ltd
Source
FDA Orange Book + USPTO grounding via Google Patents

Bibliographic data sourced from FDA Orange Book + USPTO public records. Plain-English summary generated by AI grounded in source text. Patent term extensions (PTR, SPC, pediatric) may shift the effective expiry. Not legal advice.

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