Patents by Inventor Donald J. Williams

Donald J. Williams 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: 5707722
    Abstract: A phase separated composition suitable for coating onto an ink-jet recording sheet comprising,a) at least one nonionic fluorocarbon surfactant having a hydrophilic portion and a hydrophobic portion,b) at least one polymer selected from the group consisting of hydroxycellulose and substituted hydroxycellulose polymers, andc) at least one phase separation additivesuch composition being crosslinkable when subjected to temperatures of at least about 90.degree. C., such composition forming a microporous coating.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: January 13, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mohammed Iqbal, Armin J. Paff, Donald J. Williams
  • Patent number: 5688603
    Abstract: A non-crosslinked composition suitable for coating onto an ink-jet recording sheet comprising.a) at least one nonionic fluorocarbon surfactant,b) at least one alkanolamine metal chelate wherein said metal is selected from the group consisting of titanium, zirconium and aluminum, andc) at least one polymer selected from the group consisting of hydroxycellulose and substituted hydroxycellulose polymers,such composition being crosslinkable when subjected to temperatures of at least about 90.degree. C.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: November 18, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mohammed Iqbal, Armin J. Paff, Donald J. Williams, Omar Farooq, David W. Tweeten
  • Patent number: 5567507
    Abstract: An ink-receptive sheet comprising a substrate bearing on at least one major surface an ink-receptive coating comprising at least two layers, a thin upper layer and a thick base layer, wherein said upper layer comprises a high viscosity binder selected from the group consisting of methylcellulose, hydroxypropyl methylcellulose, and blends thereof.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: October 22, 1996
    Assignee: Minnesota Mining And Manufacturing Company
    Inventors: Armin J. Paff, Alan G. Miller, Donald J. Williams
  • Patent number: 5298309
    Abstract: An electrographic article comprising a polymeric film having at least one polymeric receptor layer coated on at least one side thereof, said receptor layer having an equivalent or lower storage elasticity modulus than a toner resin used for forming images on said article.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: March 29, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Joseph C. Carls, Alan J. Herbert, Donald J. Williams
  • Patent number: 5208093
    Abstract: An electrographic article comprising a polymeric film having at least one polymeric receptor layer coated on at least one side thereof, said receptor layer having an equivalent or lower storage elasticity modulus than a toner resin used for forming images on said article.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: May 4, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Joseph C. Carls, Alan J. Herbert, Donald J. Williams
  • Patent number: 5200254
    Abstract: A receptor sheet manifold for thermal mass transfer imaging comprising a polymeric image receptor sheet comprising a transparent film substrate having an image receptive layer coated on at least one surface thereof which comprises at least about 90% imaging polymer, from about 1% to about 5% perfluoroalkylsulfonamidopolyether antistatic agent, and from about 0.2% to about 5% silica particles, and attached thereto is an opaque backing sheet having a contact surface touching the attached receptor sheet, and an opposing surface having a coating comprising from about 75% to about 94% of a binder resin capable of adhering thereto, from about 1% to about 10% antistatic agent and from about 5% to about 15% of a particulate, such that the opposing surface has a Bekk smoothness of about 450 to about 550 Bekk seconds.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: April 6, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert M. Henry, David N. Anderson, Feng M. Lin, Manisha Sarkar, Donald J. Williams
  • Patent number: 5175045
    Abstract: A receptor sheet for thermal mass transfer imaging comprising a polymeric image-receptive layer comprising a polymer having a melt transition onset no higehr than the melting point of a compatible doner sheet wax, and having a melt viscosity at the melt temperature of said donor sheet wax of at least 1.times.10.sup.4 poise.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: December 29, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert M. Henry, Mohammed Iqbal, Donald J. Williams, Patricia J. A. Brandt
  • Patent number: 4713280
    Abstract: Transparent sheet capable of receiving oil-based inks from impact ink transfer printers that use fabric ribbons.The sheet of this invention is non-tacky, and comprises a backing bearing on at least one major surface thereof an ink-receptive layer, capable of receiving oil-based ink from a fabric ribbon, said layer comprising a polymeric material having a Hansen dispersion parameter from about 10 to about 20 J.sup.1/2 /cm.sup.3/2, a Hansen dipole parameter of less than about 6 J.sup.1/2 /cm.sup.3/2, and a Hansen hydrogen bonding parameter from about 8 to about 20 J.sup.1/2 /cm.sup.3/2. The ink-receptive layer can also contain particulate material.
    Type: Grant
    Filed: July 29, 1986
    Date of Patent: December 15, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Donald J. Williams
  • Patent number: 4686549
    Abstract: Receptor sheet suitable for thermal mass transfer printing. The receptor sheet comprises a polymeric backing bearing on at least one major surface thereof a wax-compatible, image receptive layer having a softening temperature in the range of about 30.degree. C. to about 90.degree. C., the surface of said image receptive layer having a higher critical surface tension than the donor material of the donor sheet from which pigmented wax is transferred to the receptor sheet to form images thereon. A preferred receptor sheet comprises a backing made of polyethylene terephthalate and an image receptive layer formed from a blend of a wax and a copolymer of ethylene and vinyl acetate.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: August 11, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald J. Williams, Marvin R. Kammin
  • Patent number: 4480003
    Abstract: Transparency film for use in a plain paper electrostatic copier. The transparency film comprises (a) a flexible, transparent, heat resistant, polymeric film base, (b) an image receiving layer carried upon a first major surface of the film base, and (c) a layer of electrically conductive material carried on a second major surface of the film base. Where necessary a primer coat is interposed between the image receiving layer and the film base and/or between the layer of electrically conductive material and the film base. A protective coating is preferably applied over the layer of conductive material. This film can be used in either powder-toned or liquid-toned plain paper copiers for making transparencies.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: October 30, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Donald W. Edwards, Terrance J. Russell, Donald J. Williams