Patents by Inventor John W. Drew

John W. Drew 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).

  • Ultrapure hydroxylamine compound solutions and process of making same
    Patent number: 6235162
    Abstract: In one embodiment, the present invention relates to a method of treating a solution containing hydroxylamine, involving subjecting the solution containing hydroxylamine to fractional distillation using a packed column thereby providing a first distillate; and subjecting the first distillate to flashover distillation thereby providing a second distillate containing a hydroxylamine solution. In another embodiment, the present invention relates to an ultrapure solution simply containing hydroxylamine, at least one stabilizer, and water.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: May 22, 2001
    Assignee: Sachem, Inc.
    Inventors: Hossein Sharifian, John W. Drew
  • Offset putter
    Patent number: 4411429
    Abstract: A golf putter is disclosed comprising a shaft, an offset portion and a head. The head is laterally and vertically displaced from the shaft by the offset portion. The head is attached to the offset portion is such a way that when the putter is properly positioned for ball to club alignment, the offset portion is attached to an end portion of the head furthest from the golfer's body. The view presented thereby is of a shaft which appears to pass in a parallel but laterally displaced plane in front of the head. As viewed by the golfer, the golf ball appears to be bracketed by the head, offset portion and the shaft.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: October 25, 1983
    Inventors: John W. Drew, Joe M. Swift