×

Large intestinal dissociative hard capsules

  • US 5,283,064 A
  • Filed: 06/04/1991
  • Issued: 02/01/1994
  • Est. Priority Date: 06/04/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A large intestinal dissociative hard capsule for oral administration comprising a capsule consisting essentially of chitosan, the viscosity at 20°

  • C. of a solution obtained by dissolving the chitosan in an aqueous 1% by weight acetic acid solution at a concentration of 1% by weight being not higher than 100 cps and the degree of deacetylation of the chitosan being from 60 mol % to 98 mol %, having a coated layer of a polymer soluble in a liquid having pH of at least 5 on the surface of the capsule.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×