Patents by Inventor James W. Fitzhenry

James W. Fitzhenry 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).

  • Papermaking process using enzyme-treated sludge, and products
    Patent number: 7125471
    Abstract: Enzyme-treated papermaking sludges are provided, as are methods of making the enzyme-treated sludge. Papermaking processes that incorporate the enzyme-treated papermaking sludges into papermaking pulp are also provided as are paper and paperboard products made from the resultant pulp.
    Type: Grant
    Filed: November 29, 2001
    Date of Patent: October 24, 2006
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Walter B. Hill, Jr., Brian G. Hart, Lowell F. Lott, Robert J. Turnbull, James W. Fitzhenry, Daniel E. Glover, Philip M. Hoekstra
  • Papermaking process using enzyme-treated sludge, and products
    Publication number: 20030102095
    Abstract: Enzyme-treated papermaking sludges are provided, as are methods of making the enzyme-treated sludge. Papermaking processes that incorporate the enzyme-treated papermaking sludges into papermaking pulp are also provided as are paper and paperboard products made from the resultant pulp.
    Type: Application
    Filed: November 29, 2001
    Publication date: June 5, 2003
    Inventors: Walter B. Hill, Brian G. Hart, Lowell F. Lott, Robert J. Turnbull, James W. Fitzhenry, Daniel E. Glover, Philip M. Hoekstra
  • Methods to control organic contaminants in fibers
    Patent number: 6471826
    Abstract: Methods to control organic contaminants in fibers are described. One method involves contacting the fibers with a composition containing at least one esterase or lipase or both for a sufficient time and in a sufficient amount to control the organic contaminants present in the fibers. Preferably, the fibers are recycled fibers originating from a variety of sources such as old corrugated containers, old newsprint, mixed office waste, and the like. Resulting paper products formed from the processed fibers are also described as well as methods to make them.
    Type: Grant
    Filed: June 15, 2001
    Date of Patent: October 29, 2002
    Assignee: Buckman Laboratories International, Inc.
    Inventors: Daniel E. Glover, Percy Jaquess, James W. Fitzhenry
  • Methods to control organic contaminants in fibers
    Publication number: 20020059998
    Abstract: Methods to control organic contaminants in fibers are described. One method involves contacting the fibers with a composition containing at least one esterase or lipase or both for a sufficient time and in a sufficient amount to control the organic contaminants present in the fibers. Preferably, the fibers are recycled fibers originating from a variety of sources such as old corrugated containers, old newsprint, mixed office waste, and the like. Resulting paper products formed from the processed fibers are also described as well as methods to make them.
    Type: Application
    Filed: June 15, 2001
    Publication date: May 23, 2002
    Inventors: Daniel E. Glover, Percy Jaquess, James W. Fitzhenry