Patents by Inventor Tsann T. Lu

Tsann T. Lu 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).

  • Patent number: 4831756
    Abstract: This invention relates to an album with a replaceable front cover and in particular to one which mainly includes a thin iron sheeting placing at the each of the shallow edge of the front cover, a suitable number of raised projection and magnetic units as the back of a transparent cover in responding position to the edge of the shallow edge thereby urging the transparent cover firmly on to the shallow edge by means of the attraction between the magnetic unit and the thin iron sheet, and the fixing power of the raised projection and the magnetic units.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: May 23, 1989
    Inventors: Feng M. Huang, Tsann T. Lu
  • Patent number: 4830404
    Abstract: This invention relates to a screen-like photo album constituted by linking adjacent edges of each page in sequence to form a belt-like structure, placing its first page and last page inside with respect to a hard front cover and hard back cover, and edging the top and the bottom edges of each but the first and last pages by metal clips to form a double duty photo album which will be in the form of a file when closed or in the form of a screen when the linked pages of the photo album are opened.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: May 16, 1989
    Inventor: Tsann T. Lu
  • Patent number: 4822195
    Abstract: This invention relates to a multi-purpose album and in particular to one including a front cover, a back cover, a number of pages and a supporting stand. The front cover and the back cover are constituted by a flap and a slide plate, which flap has a rectangular recess at the central position for receiving a transparent plastic sheet and three raised edges. The slide plate may be inserted into the front cover and has a hinged portion which may overlap thereon. The hinged portion has two holes and two self-attaching pads. The pages are provided with two holes for receiving two sets of screws and nuts designed to bind the pages, the front cover and the back cover together.
    Type: Grant
    Filed: June 4, 1987
    Date of Patent: April 18, 1989
    Inventor: Tsann T. Lu