Patents by Inventor William M. Swift

William M. Swift 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: 6092541
    Abstract: A compact kitchenware washing station providing a variety of functions wherein three sink members are adjacently positioned and aligned adjacent to an automatic dishwashing apparatus. For an automatic operation, two of the sinks can be covered to support dishwashing racks with dishes. When a manual operation is desired, the covers are removed and the sink members utilized to provide a wash, rinse, and sanitizing operation. The kitchenware washing station is compact in design so that it can be utilized in even the smallest type of food service operation.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: July 25, 2000
    Assignee: S. C. Johnson Commercial Markets, Inc.
    Inventors: David R. Crane, William M. Swift, Sr.
  • Patent number: 5697307
    Abstract: A process for treating organic waste materials without venting gaseous emissions to the atmosphere which includes oxidizing the organic waste materials at an elevated temperature not less than about 500.degree. C. with a gas having an oxygen content in the range of from about 20% to about 70% to produce an oxidation product containing CO.sub.2 gas. The gas is then filtered to remove particulates, and then contacted with an aqueous absorbent solution of alkali metal carbonates or alkanolamines to absorb a portion of the CO.sub.2 gas from the particulate-free oxidation product. The CO.sub.2 absorbent is thereafter separated for further processing. A process and system are also disclosed in which the waste materials are contacted with a reactive medium such as lime and product treatment as described.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: December 16, 1997
    Assignee: The University of Chicago
    Inventors: Paul A. Nelson, William M. Swift
  • Patent number: 5335609
    Abstract: A process and system for treating organic waste materials without venting gaseous emissions to the atmosphere. A fluidized bed including lime particles is operated at a temperature of at least 500.degree. C. by blowing gas having 20%/70% oxygen upwardly through the bed particles at a rate sufficient to fluidize same. A toxic organic waste material is fed into the fluidized bed where the organic waste material reacts with the lime forming CaCO.sub.3. The off gases are filtered and cooled to condense water which is separated. A portion of the calcium carbonate formed during operation of the fluidized bed is replaced with lime particles. The off gases from the fluidized bed after drying are recirculated until the toxic organic waste material in the bed is destroyed.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: August 9, 1994
    Assignee: University of Chicago
    Inventors: Paul A. Nelson, William M. Swift