Patents by Inventor Raymond E. Ahlgren

Raymond E. Ahlgren 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).

  • Process for opalizing glass
    Patent number: 4050947
    Abstract: This invention relates to the use of AlF.sub.3 as an opacifying agent in an opal glass making batch which contains 40 wt. percent or more of container and sheet glass cullett. The batch consists essentially, in weight percent, of 40-85% cullett, 0-25% Na.sub.2 B.sub.4 O.sub.7.5H.sub.2 O, 0-12% CaMg(CO.sub.3).sub.2, 3-19% SiO.sub.2, and an amount of Alf.sub.3, which is 10-30% of the weight of the cullett.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: September 27, 1977
    Assignee: Bullseye Glass Co.
    Inventors: Raymond E. Ahlgren, Danial W. Schwoerer, Boyce H. Lundstrom