Patents by Inventor Wallace A. Erickson

Wallace A. Erickson 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).

  • Dental filling materials
    Patent number: 4163004
    Abstract: An improved filler for use with a polymerizable monomer in preparing direct dental filling materials is produced by treating a finely divided inorganic filler with a tetra (alkenyloxy) titanium di(dialkyl) phosphite.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: July 31, 1979
    Assignee: Wallace A. Erickson & Company
    Inventors: Wallace A. Erickson, Byoung I. Suh
  • Whistle-cap device
    Patent number: 4121375
    Abstract: A whistle-cap device adapted for attachment to a container having a head and threaded section extending from said head. The device includes threads adapted to mate with the threaded section of the container and a whistle portion which is inoperative when the device is assembled on a container.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: October 24, 1978
    Assignee: Wallace A. Erickson & Company
    Inventors: Wallace A. Erickson, Dorothea C. Erickson
  • Child's toothbrush having a whistle
    Patent number: 4001909
    Abstract: A combined toothbrush whistle having a bristle portion and a shaft with a cover adapted to fit over the slide relative to the shaft. The cover has an opening in the cover wall for producing musical notes and a sheath located at one end of the cover for covering the bristle portion.
    Type: Grant
    Filed: February 2, 1976
    Date of Patent: January 11, 1977
    Assignee: Wallace A. Erickson Company
    Inventors: Wallace A. Erickson, David K. Erickson