Patents Examined by P. S. Ryan
  • Prolonged activity nicotine patch
    Patent number: 4943435
    Abstract: A transdermal patch for delivering nicotine for prolonged periods of 12-24 hours. The patch includes a rate-controlling membrane or monolith to keep the nicotine flux within useful and safe limits. The patch is typically replaced once a day, and can be used for smoking cessation therapy or in other situations where systemic nicotine delivery is indicated.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: July 24, 1990
    Assignee: Pharmetrix Corporation
    Inventors: Richard W. Baker, Frank Kochinke, Carl Huang