Patents by Inventor Margaret S. Keller

Margaret S. Keller 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: 4601725
    Abstract: Fugitive colorants having the general formula:A--N.dbd.N--B--[(C)H].sub.nwherein A is thiophene or a thiophene derivative, N is nitrogen, B is a nitrogen containing organic dyestuff coupling component, C is a polymer chain bound to nitrogen in the dyestuff coupling component; said polymer chain being selected from polyethylene oxide, polypropylene oxide, polybutylene oxide and copolymers of polyethylene oxide, polypropylene oxide, and/or polybutylene oxide, said polymer chain having about x repeating monomeric units, n is an integer from 1 to 6 and the product of n times x is from about 50 to about 250. A coloration process is also disclosed and claimed.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: July 22, 1986
    Assignee: Milliken Research Corporation
    Inventors: Margaret S. Keller, Edward W. Kluger
  • Patent number: 4400320
    Abstract: Fugitive tints are provided which are characterized by the formula: ##STR1## where R is selected from meta-toluidene, meta-amino phenol, aniline or dimethoxy aniline A is selected from N, O, S, or CO.sub.2 ; the alkylene group of the alkyleneoxy constituent contains from 2 to about 4 carbon atoms; n is an integer of from 2 to about 300; m is 1 when A is O, S, or CO.sub.2, and 2 when A is N; x is an integer of from 1 to about 5; and the product of n times m times x (n.multidot.m.multidot.x) is from 2 to about 400. Also provided is a process for preparing alkyleneoxy fugitive tints.
    Type: Grant
    Filed: July 13, 1981
    Date of Patent: August 23, 1983
    Assignee: Milliken Research Corporation
    Inventors: Margaret S. Keller, Ralph N. Brendle