Patents by Inventor Leon Mermelstein

Leon Mermelstein 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: 5000319
    Abstract: Translucent or transparent plastic storage pages which include a plurality of parallel laterally-extending top loading pouches for accommodating film negatives. The top sheet of each page has a series of parallel cuts respectively disposed below the top boundary of each of the pouches and coinciding in position with sprocket holes on the film, forming upper and lower flaps. Thus, when the negatives are in place in the pouches, the slit for the pouch closes over the negative strip locking it into place against the row of sprocket holes, and preventing the strip (no matter what the length) from falling out when kept flat or hanging. Beading the page at the slit (or cut) opens the pouch for easy retrieval. Negative strips of any length from 1 to 5 frames can be stored in the pouch.
    Type: Grant
    Filed: March 26, 1990
    Date of Patent: March 19, 1991
    Inventor: Leon Mermelstein
  • Patent number: 4193218
    Abstract: Translucent plastic pages of an improved design for the filing of color film slides, wherein the storage trays are slightly indented to remove the slide emulsion from direct contact with the plastic. In accordance with a further feature, the translucent storage pages are formed from archival material, and are designed alternatively to be suspended in a file cabinet by means of a hanging bar which affixes to the page, and includes an indexing tab; or to be stored in a conventional ring binder, without the hanging bar.
    Type: Grant
    Filed: April 13, 1978
    Date of Patent: March 18, 1980
    Assignee: Franklin Distributors Corporation
    Inventor: Leon Mermelstein