Patents by Inventor James Crigger

James Crigger 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: 4650707
    Abstract: There is disclosed a temperature indication strip having a top sheet secured to a bottom sheet. The top sheet contains designated areas of a particular background color which is imprinted thereon using a high temperature ink. The top sheet is transparent, and when the background areas are imprinted on the top sheet, a reference numeral is formed in each area. Secured to the bottom sheet and position beneath the transparent reference numeral of the top sheet is a coated member. The member consists of a sheet of paper which is of the same color as the background color on the top sheet and which is coated with a temperature sensitive varnish or lacquer. The lacquer is such that it will evaporate at a given temperature. Upon evaporation of the lacquer, the paper sheet effectively causes the numeral to disappear, and hence the entire area assumes the color of the background. In this manner the numeral blends into the area indicating to the user that the temperature indicative of the area has been reached.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: March 17, 1987
    Assignee: Thermotech D.L.C., Inc.
    Inventor: James Crigger