Patents by Inventor Paul C. Keiswetter

Paul C. Keiswetter 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).

  • Publication number: 20040166298
    Abstract: A plastic masking film comprises at least two layers, an outer layer having sufficient surface energy to ensure the adherence of paint, and an inner layer providing cling to a surface. The outer layer comprises a corona-treated thermoplastic material having a surface with a surface energy greater than 50 dynes/cm. at the time of manufacture and which remains at a minimum of 35 dynes/cm. until use. The thermoplastic material of the outer layer comprises one or a combination of members selected from the group consisting of ethylene vinyl acetate, polyvinyl alcohol, polyvinyl acetate, ethylene vinyl alcohol, and high density polyethylene. The inner layer comprises high density polyethylene. Desirably, the film also includes a central core layer formed of one or a combination of polyolefins, preferably low-density polyethylene or linear low-density polyethylene, compatible with the inner and outer layers.
    Type: Application
    Filed: February 23, 2004
    Publication date: August 26, 2004
    Inventors: Graham M. Chapman, Adam K. Lowry, Paul C. Keiswetter, James K. Craig
  • Patent number: 4884839
    Abstract: A temporary vehicle seat cover is adapted for installation after the manufacture of the seat, and before it is mounted in the vehicle, to protect the seat upholstery until the vehicle reaches the purchaser. It is then easily removed without leaving fragments of the seat cover entrapped between the seat and its support structure.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: December 5, 1989
    Inventor: Paul C. Keiswetter
  • Patent number: 4676376
    Abstract: A temporary protective cover for an automobile seat or the like which comprises an elongated strip of film with a pocket or cap at the upper end that fits over the upper end of the set, with the remaining portion of the film extending downwardly over the front surface of the seat. The film is a co-extruded film formed of two different thermoplastic materials having different cling properties, such that a sticky side of the film faces inwardly against the seat and a slippery side faces outwardly. High density polyethylene forms one surface and low density or linear low density polyethylene forms the other surface. A seat cover thus formed clings to the seat and prevents dislodging of the seat cover even though the seat cover may be subjected to a sideways displacement force when a person or other object slides across the exterior surface of the seat cover.
    Type: Grant
    Filed: October 4, 1985
    Date of Patent: June 30, 1987
    Assignee: Petoskey Plastics, Inc.
    Inventor: Paul C. Keiswetter