Patents by Inventor James E. Sealey, II

James E. Sealey, II 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).

  • Lyocell fibers, and compositions for making the same
    Patent number: 6471727
    Abstract: The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization (D.P.). Further, the present invention provides processes for making compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization. The present invention also provides lyocell fibers containing a high proportion of hemicellulose. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: October 29, 2002
    Assignee: Weyerhaeuser Company
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Lyocell fibers produced from kraft pulp having low average degree of polymerization values
    Patent number: 6444314
    Abstract: The present invention is directed to lyocell fibers having a high hemicellulose content of at least 5%, a low lignin content as measured by a kappa number less than 2.0 and including cellulose that has a low average degree of polymerization (D.P.) in the range of 200 to 1100. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: September 3, 2002
    Assignee: Weyerhaeuser
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Lyocell film made from cellulose having low degree of polymerization values
    Patent number: 6440547
    Abstract: The present invention provides lyocell films, having a high hemicellulose content of at least 5%, a low copper number of less than 2, and including cellulose that has a low average degree of polymerization (D.P.) in the range of about 200 to 1100.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: August 27, 2002
    Assignee: Weyerhaeuser
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Lyocell fiber made from alkaline pulp having low average degree of polymerization values
    Patent number: 6440523
    Abstract: The present invention provides lyocell fibers made from compositions having a high hemicellulose content of at least 5% by weight, a low kappa number of less than 2.0 and including cellulose that has a low average degree of polymerization (D.P.) value of about 200 to 1,100, and a narrow molecular weight distribution ( R) of less than 2.8.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: August 27, 2002
    Assignee: Weyerhaeuser
    Inventors: James E. Sealey, II, W. Harvey Persinger, Jr., Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi
  • Alkaline pulp having low average degree of polymerization values and method of producing the same
    Patent number: 6331354
    Abstract: The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low copper number and including cellulose that has a low average degree of polymerization (D.P.) and a narrow molecular weight distribution. Further, the present invention provides processes for making compositions, useful for making lyocell fibers, having a high hemicellulose content, a low copper number and including cellulose that has a low average degree of polymerization and a narrow molecular weight distribution. The present invention also provides lyocell fibers containing a high proportion of hemicellulose.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: December 18, 2001
    Assignee: Weyerhaeuser Company
    Inventors: James E. Sealey, II, W. Harvey Persinger, Jr., Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi
  • Lyocell fibers, and compositions for making the same
    Publication number: 20010028955
    Abstract: The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization (D.P.). Further, the present invention provides processes for making compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization. The present invention also provides lyocell fibers containing a high proportion of hemicellulose. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.
    Type: Application
    Filed: January 23, 2001
    Publication date: October 11, 2001
    Applicant: Weyerhaeuser Company
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey II, Richard A. Jewell
  • Lyocell fibers, and compositions for making same
    Patent number: 6210801
    Abstract: The present invention provides compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization (D.P.). Further, the present invention provides processes for making compositions, useful for making lyocell fibers, having a high hemicellulose content, a low lignin content and including cellulose that has a low average degree of polymerization. The present invention also provides lyocell fibers containing a high proportion of hemicellulose. Further, the lyocell fibers of the present invention have enhanced dye-binding properties and a reduced tendency to fibrillate.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: April 3, 2001
    Assignee: Weyerhaeuser Company
    Inventors: Mengkui Luo, Vincent A. Roscelli, Amar N. Neogi, James E. Sealey, II, Richard A. Jewell
  • Cellulose derivatives with a low degree of substitution
    Patent number: 5523398
    Abstract: The invention is directed to the formation of cellulose derivatives using homogenous phase reaction conditions. Cellulose is dissolved using DMAc/LiCl and a reagent system is added to promote the acylation of an appropriate acid anhydride or free carboxylic acid. One reagent system includes N,N-dicyclohexylcarbodiimide (DCC) and 4-pyrrolidinopyridine (PP). Another reagent system includes p-toluene sulfonyl chloride (TsCl) and pyridine (Py).
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: June 4, 1996
    Assignees: The Center for Innovative Technology, Virginia Polytechnic Institute and State University, Virginia Tech Intellectual Properties
    Inventors: Wolfgang G. Glasser, Gamini Samaranayake, James E. Sealey, II