Patents by Inventor Peter Stahala

Peter Stahala 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).

  • Process and composition of sulfur dyes
    Patent number: 6302925
    Abstract: A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to said fibrous substrate in the presence of a suitable reducing agent. Further, it has been surprising to find that these reduction stable direct dyes can be processed without a sulfur dye present. This results in a process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing a reduction stable direct dye; and applying said reduction stable direct dye to said fibrous substrate in the presence of a suitable reducing agent.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: October 16, 2001
    Assignee: Clariant Finance (BVI) Limited
    Inventors: J. Michael Hipp, Mark S. Carlough, William T. Sherrill, Peter Stahala
  • Process and composition of sulfur dyes
    Patent number: 6287349
    Abstract: A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to said fibrous substrate in the presence of a suitable reducing agent. Further, it has been surprising to find that these reduction stable direct dyes can be processed without a sulfur dye present. This results in a process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing a reduction stable direct dye; and applying said reduction stable direct dye to said fibrous substrate in the presence of a suitable reducing agent.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: September 11, 2001
    Assignee: Clariant Finance (BVI) Limited
    Inventors: J. Michael Hipp, Mark S. Carlough, William T. Sherrill, Peter Stahala
  • PROCESS AND COMPOSITION OF SULFUR DYES
    Publication number: 20010009045
    Abstract: A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to said fibrous substrate in the presence of a suitable reducing agent. Further, it has been surprising to find that these reduction stable direct dyes can be processed without a sulfur dye present. This results in a process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing a reduction stable direct dye; and applying said reduction stable direct dye to said fibrous substrate in the presence of a suitable reducing agent.
    Type: Application
    Filed: November 22, 1999
    Publication date: July 26, 2001
    Inventors: J. MICHAEL HIPP, MARK S. CARLOUGH, WILLIAM T. SHERRILL, PETER STAHALA
  • Process and composition of sulfur dyes
    Patent number: 6019800
    Abstract: A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to said fibrous substrate in the presence of a suitable reducing agent. Further, it has been surprising to find that these reduction stable direct dyes can be processed without a sulfur dye present. This results in a process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing a reduction stable direct dye; and applying said reduction stable direct dye to said fibrous substrate in the presence of a suitable reducing agent.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: February 1, 2000
    Assignee: Clariant Finance (BVI) Limited
    Inventors: J. Michael Hipp, Mark S. Carlough, William T. Sherrill, Peter Stahala