GB Patent

GB320749A

Expires 2013-06-11 · 13y expired

What this patent protects

320,749. Boehringer, A., (trading as Boehringer Sohn, C. H.), and Schopf, C. Oct. 6, 1928. The monoacetyl derivatives of dihydrocodeinone, which possesses therapeutic properties, is prepared by treating dihydrocodeinone with an acetylating agent, preferably acetic anhydride in ex…

USPTO Abstract

320,749. Boehringer, A., (trading as Boehringer Sohn, C. H.), and Schopf, C. Oct. 6, 1928. The monoacetyl derivatives of dihydrocodeinone, which possesses therapeutic properties, is prepared by treating dihydrocodeinone with an acetylating agent, preferably acetic anhydride in excess. An example is given.

Drugs covered by this patent

chembl-chembl112 (ACETAMINOPHEN)

Patent Metadata

Patent number: GB320749A
Jurisdiction: GB
Classification: —
Expires: 2013-06-11
Drug substance claim: No
Drug product claim: No
Assignee: —
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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