Patents by Inventor Robert A. Bredeweg

Robert A. Bredeweg 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).

  • Eradication of bis-chloromethyl ether and 1,1,1,2-tetrachloroethane from chloroacetyl chloride
    Patent number: 4117007
    Abstract: Bis-chloromethyl ether (CME) and 1,1,1,2-tetrachloroethane (TCE) impurities are efficiently eradicated from chloroacetyl chloride (CAC) by a process comprising contacting the CAC, containing about 100 to about 250 ppm CME and about 1 weight percent, based on the weight of the CAC, of TCE, with a catalytic amount of ferric and/or aluminum cations at a temperature at least about 50.degree. C. This process does not require hydrochloric acid and yields CAC containing less than detectable (<0.5 ppm CME, <0.05 wt. % TCE) amounts of the impurities.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: September 26, 1978
    Assignee: The Dow Chemical Company
    Inventors: Robert A. Bredeweg, Yog R. Dhingra
  • Hook attachment boss for a garment hanger
    Patent number: D284427
    Type: Grant
    Filed: April 12, 1985
    Date of Patent: July 1, 1986
    Assignee: John Thomas Batts, Inc.
    Inventor: Robert A. Bredeweg