Patents by Inventor Edward Kwan

Edward Kwan 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).

  • Lamination of vegetable matter
    Patent number: 5433803
    Abstract: Flowers or leaves are dried for 3-7 days under controlled atmospheric conditions, and under pressure, between absorbent sheets. The dried material is placed on a backing sheet and covered by a layer of laminating plastic. By the application of pressure, heat and vacuum, the air between the laminating and backing sheets is removed, the laminating sheet moulds around the dried material and is laminated to the backing sheet.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: July 18, 1995
    Assignee: Paul N. Van Draanen
    Inventors: Edward Kwan, John P. Le Sands