Patents by Inventor Robert L. Dreger

Robert L. Dreger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • On page fragrance sampling device
    Patent number: 4769264
    Abstract: Microencapsulated materials are released by rupturing of an adhesive layer on a substrate containing the capsules. At least two sheets are secured by the adhesive layer containing the microcapsules. At least one of said two sheets has an adhesive on the outer face of said at least one sheet.
    Type: Grant
    Filed: July 15, 1987
    Date of Patent: September 6, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert L. Dreger