Patents by Inventor Kevin W. Williams

Kevin W. 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: 6410202
    Abstract: An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and an infrared radiation sensitive dye having multiple quaternary ammonium groups. The heat-sensitive polymer and IR dye can be formulated in water or water-miscible solvents to provide highly thermal sensitive imaging compositions. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered “switchable” in response to heat, and provides a lithographic image without wet processing.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: June 25, 2002
    Assignee: Eastman Kodak Company
    Inventors: James C. Fleming, Jeffrey W. Leon, David A. Stegman, Kevin W. Williams
  • Patent number: 6376163
    Abstract: A UV or visible-light sensitive photobleachable dye composition substantially free of polymerizable monomer comprising a photobleachable dye and an N-oxyazinium compound, a photographic element containing such a photobleachable composition, and a method for bleaching a photographic element.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: April 23, 2002
    Assignee: Eastman Kodak Company
    Inventors: Ramanuj Goswami, Samir Y. Farid, Robert J. Perry, Paul A. Zielinski, Ian R. Gould, Kevin W. Williams
  • Patent number: 6361916
    Abstract: A composition that is useful in a wide variety of applications comprises a latex having water as a continuous phase and, as the dispersed phase, hydrophobic polymer particles having associated therewith both a dye and a stabilizer for the dye. In a particularly preferred embodiment, the dye is an infrared absorbing dye. The composition can be used as an inkjet ink, as a coating composition to form an infrared sensitive optical recording layer or for other purposes.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: March 26, 2002
    Assignee: Eastman Kodak Company
    Inventors: Huijuan D. Chen, Tien-Teh Chen, Kevin W. Williams
  • Publication number: 20010031340
    Abstract: This invention comprises a transferable support comprising a substantially flat sheet having on a surface thereof encoded data in the form of dot code or two-dimensional bar code wherein the data is capable of being read by a sensor. The invention also comprises object having affixed to a surface thereof a support comprising a substantially flat sheet having on a surface thereof encoded data in the form of dot code or two-dimensional bar code wherein the data is capable of being read by an sensor.
    Type: Application
    Filed: December 31, 1998
    Publication date: October 18, 2001
    Inventors: KEVIN W. WILLIAMS, HUIJUAN D. CHEN, W. S. GAUGH
  • Patent number: 6248886
    Abstract: Infrared radiation-sensitive heterocyclic oxonol compounds have been found that are represented by Structure DYE as follows: wherein R is a secondary or tertiary amine, R1 and R2 are independently heterocyclic or carbocyclic aromatic groups, and M+ is a monovalent cation, provided that at least one of R, R1 and R2 contains at least one heterocyclic group. These compounds have a &lgr;max above 700 nm and are can be used in a number of photosensitive or heat-sensitive imaging materials.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: June 19, 2001
    Assignee: Eastman Kodak Company
    Inventors: Kevin W. Williams, Shiying Zheng, Thap DoMinh
  • Patent number: 6248893
    Abstract: Infrared radiation-sensitive compounds have been found that are represented by Structure DYE as follows: wherein R is a secondary or tertiary amine that contains no heterocyclic group, R1 and R2 are independently carbocyclic aromatic groups, and M+ is a monovalent cation. These compounds have a &lgr;max above 700 nm and are can be used in a number of photosensitive or heat-sensitive imaging materials.
    Type: Grant
    Filed: June 8, 2000
    Date of Patent: June 19, 2001
    Assignee: Eastman Kodak Company
    Inventors: Kevin W. Williams, Shiying Zheng, Thap DoMinh
  • Patent number: 6245255
    Abstract: A dispersion comprises a solvent having dispersed therein a liquid-crystal forming dye of structural Formula I, II or III: wherein the substituent are as defined in the specification. The dispersion is particularly useful in imaging and photographic elements.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: June 12, 2001
    Assignee: Eastman Kodak Company
    Inventors: Margaret J. Helber, William J. Harrison, Kevin W. Williams, Steven W. Kortum
  • Patent number: 6165671
    Abstract: A laser donor element comprising a transparent support having thereon the following layers in the order recited:a) a hydrophilic layer;b) a propellant layer comprising a gas-producing polymer being capable of forming a gas upon heating by the laser and an infrared-absorbing material, the propellant layer having been coated using a polar solvent having an E.sub.t value of between about 0.3 and 1.0; andc) a colorant transfer layer comprising a colorant dispersed in a binder.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: December 26, 2000
    Assignee: Eastman Kodak Company
    Inventors: Charles H. Weidner, Kevin W. Williams
  • Patent number: 6159657
    Abstract: An imaging member, such as a negative-working printing plate or on-press cylinder, can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and an infrared radiation sensitive dye having multiple sulfo groups. The heat-sensitive polymer and IR dye can be formulated in water or water-miscible solvents to provide highly thermal sensitive imaging compositions. In the imaging member, the polymer reacts to provide increased hydrophobicity in areas exposed to energy that provides or generates heat. For example, heat can be supplied by laser irradiation in the IR region of the electromagnetic spectrum. The heat-sensitive polymer is considered "switchable" in response to heat, and provides a lithographic image without wet processing.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: December 12, 2000
    Assignee: Eastman Kodak Company
    Inventors: James C. Fleming, Jeffrey W. Leon, David A. Stegman, Kevin W. Williams
  • Patent number: 6093510
    Abstract: A dispersion comprises a solvent having dispersed therein a liquid-crystal forming dye of structural Formula I, II or III: ##STR1## wherein the substituent are as defined in the specification. The dispersion is particularly useful in imaging and photographic elements.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: July 25, 2000
    Assignee: Eastman Kodak Company
    Inventors: Margaret J. Helber, William J. Harrison, Kevin W. Williams, Steven W. Kortum
  • Patent number: 5578425
    Abstract: An element for cleaning processing solutions contained in a radiographic film processor is disclosed. The element is comprised of a transparent film support and hydrophilic colloid layers coated on opposite sides of the film support. An infrared opacifying dye is contained within the element capable of reducing specular transmission through the element before, during and after processing to less than 50 percent, measured at a wavelength within the spectral region of from 850 to 1100 nm. A processing solution soluble colorant can be contained in one or more of the hydrophilic colloid layers.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: November 26, 1996
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Kevin W. Williams
  • Patent number: 5516628
    Abstract: A photographic element with a silver halide emulsion having a maximum sensitivity in the visible region at less than 480 nm and being sensitized by a dye of formula (I): ##STR1## wherein: X.sub.1 and X.sub.2 each independently represent S, Se or O; R.sub.1 and R.sub.2 are, independently, an alkyl group; Z represents an aromatic group or heteroaromatic group that is directly appended to the benzene ring shown or is attached through a linking group provided that the atoms of the linking group are sp.sup.2 hybridized, or Z can be a fused aromatic ring group; the benzene rings shown can be further substituted or unsubstituted, and; A' is one or more ions as needed to balance the charge on the molecule.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: May 14, 1996
    Assignee: Eastman Kodak Company
    Inventors: Richard L. Parton, David A. Stegman, Kevin W. Williams, Vishwakarma L. Chand
  • Patent number: 4754454
    Abstract: This circuit facilitates the synchronization of two copies of digital control units. These digital control units control a number of digital spans. One copy of this circuit is active at any one particular time. This one copy drives all the remaining circuitry of the digital span interface for both copies of the digital control unit. The other copy of this circuit is typically in the ready-standby mode. It is not actively driving the remainder of the circuitry within its own copy. When one copy of the digital control unit is brought on-line, a framing operation must be performed to determine the proper framing bit for both copies. Circuitry in the cross-copy data path monitors an attempt to synchronize the two digital control unit copies. The data which is sent cross-copy is modified so that all data bits are at logic 1, except for a bit which the active copy believes is the proper S-bit or framing bit.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: June 28, 1988
    Assignee: GTE Communication Systems Corporation
    Inventors: Robert E. Renner, Kevin W. Williams