Patents by Inventor Ned Tulgar

Ned Tulgar 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: 6395040
    Abstract: A method for producing leather generally including the steps of: (a) providing wet blue, full grain skins, (b) applying a liquid chrome solution to the skins while at a pH of 3.5 or lower, (c) raising the pH level of the skins to at least approximately 6.0 or above, (d) retaining the skins with a vegetable tanning agent, (e) introducing the skins to a dye bath, (f) introducing lubricants into the dye bath, (g) fixing the dyestuff and lubricants in the skins while reducing the pH level to the range of 3.3-3.8, (g) introducing the skins to a second dye bath, (h) fixing the dyestuff while reducing the pH level to a range of 3.0-3.5, (i) introducing the skins to a float containing a waterproofing agent, (j) fixing the waterproofing agent while reducing the pH level to approximately 3.0, (k) capping the skins to remove emulsifiers, and (1) introducing the skins to a bath containing flame resistant agents.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: May 28, 2002
    Assignee: Wolverine World Wide, Inc.
    Inventor: Ned Tulgar