Patents by Inventor William Lawrence Truett

William Lawrence Truett 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).

  • Compounds formed from two or three antibiotics and their processes of preparation
    Patent number: 6437119
    Abstract: Processes for preparing compounds having two or three antibiotic functionalities using quinolone derivatives, &bgr;-lactams and vancomycin and the like as the starting materials and chloride linking agents; and the novel compounds prepared by these processes, are disclosed.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: August 20, 2002
    Inventor: William Lawrence Truett
  • Antifreeze composition
    Patent number: 3960740
    Abstract: Antifreeze compositions are provided which contain glycol-water concentration indicators. When used in motor vehicle radiators, the indicators in the compositions enable the motorist at a glance to determine when the glycol level has been reduced. The indicators are colored moieties, i.e., dyes, which have at least one substituent which will give a differential solubility at different glycol-water concentrations. Preferred substituents are hydroxy groups and amino groups and the preferred colored moiety is an anthraquinone dye.
    Type: Grant
    Filed: January 4, 1974
    Date of Patent: June 1, 1976
    Assignee: PPG Industries, Inc.
    Inventor: William Lawrence Truett