Patents by Inventor Gustav O. Pfeiffer

Gustav O. Pfeiffer 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: 5085914
    Abstract: A durable launderable towel has a thermobonded core of thermoplastic and other fibers. The towel has at least one cover sheet which is preferably formed with apertures and has a limited stretchability. Limited stretchability may be achieved by prestretching and heat setting the cover sheet prior to assembly into a towel. The towel is also densified in a field pattern and is typically densified at the peripheral edge. Embossing is preferably used to form these densified areas. The combination of thermobonding the core, embossing and the use of apertured cover sheets results in a towel having the softness, drape and feel approaching that of cloth. By controlling the embossing on the wiping surface of the towel, a towel with surfaces having different wipe dry characteristics and textures can be produced.
    Type: Grant
    Filed: July 20, 1990
    Date of Patent: February 4, 1992
    Assignee: Weyerhaeuser Company
    Inventors: Lee E. Perdelwitz, Jr., Gustav O. Pfeiffer, Amar N. Neogi, Ronald H. Iff, Haresh R. Mehta
  • Patent number: 5030500
    Abstract: A durable launderable towel has a thermobonded core of thermoplastic and other fibers. The towel has at least one cover sheet which is preferably formed with apertures. The towel is also densified in a field pattern and is typically densified at the peripheral edge. Embossing is preferably used to form these densified areas. The combination of thermobonding the core, embossing and the use of apertured cover sheets results in a towel having the softness, drape and feed approaching that of cloth. By controlling the embossing on the wiping surfaces of the towel, a towel with surfaces having different wipe dry characteristics and textures can be produced.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: July 9, 1991
    Assignee: Weyerhaeuser Company
    Inventors: Lee E. Perdelwitz, Jr., Gustav O. Pfeiffer, Amar N. Neogi, Ron H. Iff, Haresh R. Mehta