Patent · US Expired

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

US4835138A · kind A · utility

17Cited by
2References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 18, 1987
Grant dateMay 30, 1989
Priority date—
Expiry dateMay 18, 2007

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S930/27
  • 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.