Patents by Inventor Terry W. Pearl

Terry W. Pearl 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).

  • Methods for removing silver from spent photoprocessing solution
    Patent number: 5695645
    Abstract: Spent solutions from photographic processors are fed into a conduit (18) to which subsequently are added precipitating agents from a first source (22) and flocculating agents from a second source (28); so that, well grown or ripened clumps of flocculated solids are formed along the conduit before being emptied into a gravity collecting vessel and shipping container (38) from which clarified liquids are displaced by a mass (50) of accumulated flocculated solids, typically through a filter (58, 142, 150, 158, 162, 166, 220)for removal of any unsettled fines. Many of the clumps of flocculated solids become enlarged enough to individually extend across and substantially fill a cross-sectional area of the conduit. As a result, the enlarged clumps substantially block passage of and strain from the solution remaining fine particles which then adhere to the clumps.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: December 9, 1997
    Assignee: Eastman Kodak Company
    Inventors: Thomas W. Bober, Terry W. Pearl, Dominick Vacco, David C. Yeaw
  • Apparatus for removing silver from spent photoprocessing solution
    Patent number: 5688401
    Abstract: Spent solutions from photographic processors are fed into a conduit (18) to which subsequently are added precipitating agents from a first source (22) and flocculating agents from a second source (28); so that, well grown or ripened clumps of flocculated solids are formed along the conduit before being emptied into a gravity collecting vessel and shipping container (38) from which clarified liquids are displaced by a mass (50) of accumulated flocculated solids, typically through a filter (58, 142, 150, 158, 162, 166, 220) for removal of any unsettled fines. Many of the clumps of flocculated solids become enlarged enough to individually extend across and substantially fill a cross-sectional area of the conduit. As a result, the enlarged clumps substantially block passage of and strain from the solution remaining fine particles which then adhere to the clumps.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: November 18, 1997
    Assignee: Eastman Kodak Company
    Inventors: Thomas W. Bober, Terry W. Pearl, Dominick Vacco, David C. Yeaw
  • Apparatus for removing a component from solution
    Patent number: 5549820
    Abstract: Spent solution from photographic processors are fed into a conduit (18) to which subsequently are added precipitating agents from a first source (22) and flocculating agents from a second source (28); so that, well grown or ripened clumps of flocculated solids are formed along the conduit before being emptied into a gravity collecting vessel and shipping container (38) from which clarified liquids are displaced by a mass (50) of accumulated flocculated solids, typically through a filter (58, 142, 150, 158, 162, 166, 220) for removal of any unsettled fines.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: August 27, 1996
    Assignee: Eastman Kodak Company
    Inventors: Thomas W. Bober, Terry W. Pearl, Dominick Vacco, David C. Yeaw