Patents by Inventor Sandra L. Schelm

Sandra L. Schelm 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: 4775523
    Abstract: A dentifrice sachet wherein the sachet which envelops the dentifrice is a plastic laminate material having a modified acrylonitrile methyl acrylate copolymer inner surface. The sachet is subject to reduced delamination when in contact with a paste or gel dentifrice.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: October 4, 1988
    Assignee: Colgate-Palmolive Company
    Inventors: Dorinda A. Sparacio, Steven W. Fisher, Sandra L. Schelm
  • Patent number: 4716034
    Abstract: Dental cream in contact with a polyolefin resin surface of a package such as a laminate tube, a mechanical dispenser or a flexible sachet. The dental cream contains as at least the major portion of which is a dentally acceptable water-insoluble polishing material alpha-alumina trihydrate, a liquid vehicle and a gelling agent and an agent to reduce pH containing phosphate ion. The liquid vehicle contains water, glycerine and sorbitol and, as an additive to prevent syneresis due to contact between the dental cream and the polyolefin resin, polyethylene glycol of average molecular weight or about 200-1000.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: December 29, 1987
    Assignee: Colgate-Palmolive Company
    Inventor: Sandra L. Schelm
  • Patent number: 4716036
    Abstract: Dental cream stabilized for contact with a polyolefin resin surface of a package such as a laminate tube, a mechanical dispenser or a flexible sachet. The dental cream contains as at least the major dentally acceptable water-insoluble polishing material alpha-alumina trihydrate, a liquid vehicle and a gelling agent and an agent to reduce pH containing phosphate ion. The liquid vehicle contains water, glycerine and sorbitol and a vegetable oil as in additive to reduce syneresis due to contact between the dental cream and the polyolefin resin.
    Type: Grant
    Filed: January 22, 1986
    Date of Patent: December 29, 1987
    Assignee: Colgate-Palmolive Company
    Inventor: Sandra L. Schelm