Patents by Inventor Eugene Turkenkopf

Eugene Turkenkopf 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).

  • Method and apparatus for forming expansible envelope
    Patent number: 4008650
    Abstract: An improved method and apparatus for taking a precut one-piece unitary blank and forming it into an expansible container and the like.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: February 22, 1977
    Inventors: Seymour B. Alter, Eugene Turkenkopf
  • Expansible envelope
    Patent number: 3955749
    Abstract: An expansible envelope container, folder, bag and the like formed from a one-piece unitary blank is provided. The envelope includes a front panel and rear panel separated by a bottom panel. Each of the front and rear panels has a flap extending outwardly from its left and right side edges. Each of these flaps includes an adhesive and an adhesive-free zone. The front and rear panel right side flaps are secured to each other and similarly the front and rear panel left side flaps are secured to each other. An integral blank for forming the envelope container, folder, bag and the like is also disclosed.
    Type: Grant
    Filed: June 28, 1974
    Date of Patent: May 11, 1976
    Inventor: Eugene Turkenkopf