Patents by Inventor Robert J. Krieger

Robert J. Krieger 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: 11912003
    Abstract: Multilayer films and adhesive tapes that include such films, wherein the multilayer films include plasticized polyvinyl chloride and optionally one or more fillers.
    Type: Grant
    Filed: November 14, 2022
    Date of Patent: February 27, 2024
    Assignee: 3M Innovative Properties Company
    Inventors: Christopher J. Rother, Jose P. De Souza, Robert B. Rosner, Jacob D. Young, Jeffrey O. Emslander, Gregg A. Patnode, Ann R. Fornof, Rafael Garcia-Ramirez, Jay M. Krieger
  • Patent number: 4581745
    Abstract: Electric arc apparatus and an associated method are provided. Pairs of aligned cooperating coils are positioned on opposed sides of a crucible. In a preferred embodiment, three such pairs which overlap each other are employed so as to sequentially generate magnetic fields so as to provide a uniform magnetic field which will rotate the arc between the electrode and the crucible interior in a first direction. The arc rotation may be reversed. It is preferred that the maximum magnetic field created by each pair of coils be out of time phase with respect to the other coil's magnetic field. This apparatus and the associated method serve to resist undesired irregularities in the ingot exterior surface which irregularities would require subsequent treatment and result in loss of metal.
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: April 8, 1986
    Assignee: Timet
    Inventors: David R. Mathews, Robert J. Krieger