Patent · US Expired

Choline esters as absorption-enhancing agents for drug delivery through mucous membranes of the nasal, buccal, sublingual and vaginal cavities

US4963556A · kind A · utility

18Cited by
1References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateApr 20, 1989
Grant dateOct 16, 1990
Priority date—
Expiry dateApr 20, 2009

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61K47/186
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

Choline esters are used as drug absorption enhancing agents for drugs which are poorly absorbed from the nasal, oral, and vaginal cavities.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.