Patents by Inventor Steven Evans

Steven Evans 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: 6280026
    Abstract: An ink jet printing process for improving the dye density and fixability of an ink jet image comprising: a) providing an ink jet recording element comprising a support having thereon an image-recording layer comprising a mixture of an anionic, water-dispersible polyester ionomer and a hydrophilic polymer; and b) applying droplets of a liquid ink on the image-recording layer in an image-wise manner, the ink comprising water, humectant and a water-soluble cationic or basic dye.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: August 28, 2001
    Assignee: Eastman Kodak Company
    Inventors: Kristine B. Lawrence, Csaba A. Kovacs, Susan L. Dawson, Steven Evans, Teh-Ming Kung
  • Patent number: 6280027
    Abstract: An ink jet printing process for improving the dye density and fixability of an ink jet image comprising: a) providing an ink jet recording element comprising a support having thereon an image-recording layer comprising a mixture of an anionic, water-dispersible polyurethane and a hydrophilic polymer; and b) applying droplets of a liquid ink on the image-recording layer in an image-wise manner, the ink comprising water, humectant and a water-soluble cationic or basic dye.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: August 28, 2001
    Assignee: Eastman Kodak Company
    Inventors: Kristine B. Lawrence, Paul D. Yacobucci, Csaba A. Kovacs, Steven Evans
  • Patent number: 6208364
    Abstract: A process of forming a diffusion resistant lenticular element: a) contacting at least one dye-donor element having a support having thereon a dye layer having an image dye in a binder having an infrared-absorbing material associated therewith, the image dye comprising a nonionic dye capable of being converted to a cationic dye with an acid, with a lenticular element having a support with a lenticular array thereon on the opposite side thereof; b) imagewise-heating the dye-donor element with a laser; c) transferring a dye image to the support of the lenticular element; d) contacting the dye image with an acidic mordanting layer; and e) heating the lenticular element to cause the nonionic dye to convert to a cationic dye which is mordanted in the acidic mordanting layer.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: March 27, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lee W. Tutt, Christine M. Vargas, Steven Evans
  • Patent number: 6183548
    Abstract: A color ink jet ink set for color printing comprising: (a) a yellow ink comprising a carrier and Direct Yellow 107, Direct Yellow 132 or Direct Yellow 86; (b) a magenta ink comprising a carrier and a water soluble, transition metal complex of an 8-heterocyclylazo-5-hydroxyquinoline dye; and (c) a cyan ink comprising a carrier and a sulfonated copper phthalocyanine dye.
    Type: Grant
    Filed: August 31, 1999
    Date of Patent: February 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: David Erdtmann, Steven Evans, Helmut Weber
  • Patent number: 6174356
    Abstract: An ink jet ink composition comprising water, a humectant and a water-soluble azoindole dye.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: January 16, 2001
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Helmut Weber, Ellen M. Pyszczek
  • Patent number: 6143061
    Abstract: An ink jet ink composition comprising water, a humectant, and a delocalized cationic azo dye derived from the quatemization of a heterocyclic azoaminothiazole dye.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: November 7, 2000
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Csaba A. Kovacs, Ellen M. Pyszczek, Helmut Weber
  • Patent number: 6136079
    Abstract: An ink jet ink composition comprising water, a humectant and a water-soluble monomethine oxonol dye.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: October 24, 2000
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Helmut Weber
  • Patent number: 6136080
    Abstract: An ink jet ink composition comprising water, a humectant, and a cationic azo dye derived from the quaternization of a pyrazoleazoindole dye.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: October 24, 2000
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Csaba A. Kovacs, Helmut Weber
  • Patent number: 6136081
    Abstract: An aqueous ink Jet ink composition comprising a humectant in an amount of up to about 70% by weight of the composition, and from about 0.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: October 24, 2000
    Assignee: Eastman Kodak Company
    Inventors: Raymond P. Scaringe, Steven Evans, Richard C. VanHanehem
  • Patent number: 6132501
    Abstract: An aqueous ink jet ink composition comprising a humectant in an amount of up to about 70% by weight of the composition, and from about 0.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: October 17, 2000
    Assignee: Eastman Kodak Company
    Inventors: Raymond P. Scaringe, Steven Evans, Richard C. VanHanehem
  • Patent number: 6094593
    Abstract: A method for detecting a heart disorder comprises examination of a phase-plane plot (PPP) of a patient electrocardiogram (EKG). The PPP's degree of deterministic chaos may be measured by a processor. Analysis of the PPP may indicate a propensity for fibrillation that is, indicate both the risk of fibrillation and its actual onset (cases where risk is 100 percent). A second method for detecting a heart disorder comprises examination of a frequency-domain transform (such as an FFT) of a patient EKG. An automatic defibrillating device may comprise means for delivering a variable shock, the size of which is determined at least in part by the FFT's peak energy. A method for detecting drug toxicity comprises examination of a parameter time constant for an action-potential duration (APD) restitution curve which is constructed for the patient.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: July 25, 2000
    Assignee: Cedars-Sinai Medical Center
    Inventors: Hrayr S. Karagueuzian, George A. Diamond, Steven S. Khan, Timothy A. Denton, Steven Evans
  • Patent number: 6001161
    Abstract: An ink jet ink composition comprising water, a humectant, and a polyvalent transition metal complex of 8-heterocyclylazo-5-hydroxyquinoline.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: December 14, 1999
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Helmut Weber
  • Patent number: 5997622
    Abstract: An ink jet printing method, comprising the steps of:A) providing an ink jet printer that is responsive to digital data signals;B) loading the printer with ink-receptive substrates;C) loading the printer with an ink jet ink composition comprising a carrier and a polyvalent transition metal complex of an 8-heterocyclylazo-5-hydroxyquinoline; andD) printing on an ink-receptive substrate using the ink jet ink in response to the digital data signals.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: December 7, 1999
    Assignee: Eastman Kodak Company
    Inventors: Helmut Weber, Steven Evans
  • Patent number: 5945374
    Abstract: A thermal dye transfer assemblage comprising:(a) a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, the dye being:I) an electrically neutral, deprotonated, delocalized cationic dye precursor;II) a pendant basic dye of the formula D-(L-E).sub.m wherein D represents the residue of a dye, L represents a covalent linking group, E represents a moiety with basic properties and m is an integer of 1-3; orIII) a cationic dye precursor having the following structure: ##STR1## (b) a dye-receiving element comprising a support having thereon a polymeric dye image-receiving layer, the dye-receiving element being in a superposed relationship with the dye-donor element so that the dye layer is in contact with the polymeric dye image-receiving layer, the polymeric dye image-receiving layer comprising an acidic salt formed from the reaction of a weak, nitrogen-containing base with a strong protic acid dissolved or dispersed in a polymeric binder.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: August 31, 1999
    Assignee: Eastman Kodak Company
    Inventors: Elizabeth G. Burns, Steven Evans, Kristine B. Lawrence, Richard C. VanHanehem
  • Patent number: 5932518
    Abstract: A dye-donor element comprising a support having on one side thereof a dye layer comprising a dye precursor dispersed in a polymeric binder, the dye precursor having the following structure: ##STR1## and the support having on the other side thereof a slipping layer.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: August 3, 1999
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Ellen M. Pyszczek, Helmut Weber
  • Patent number: 5870563
    Abstract: Computers are linked together to form a network. Messages are sent over the links between the computers in compressed, segmented form, the size of the segments being appropriate to the transmission characteristics of the link. A message previously received or transmitted by a computer is stored in compressed and segmented form. If it is desired to forward or re-transmit this message, the segment size of the stored form is compared against the optimum segment size for the link over which the message is to be sent. If there is a close match, then the stored segmented, compressed message is retrieved for direct transmittal, without having to resegment or recompress the message.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: February 9, 1999
    Assignee: International Business Machines Corporation
    Inventors: Michael Ian Roper, Lawrence Steven Evans, Graham Derek Wallis
  • Patent number: 5804531
    Abstract: A thermal dye transfer assemblage comprising:(a) a dye-donor element comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, the dye being:I) an electrically neutral, deprotonated, delocalized cationic dye precursor;II) a pendant basic dye of the formula D-(L-E).sub.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: September 8, 1998
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Teh-Ming Kung, Kristine B. Lawrence, Richard C. VanHanehem
  • Patent number: 5795844
    Abstract: A multicolor dye-donor element for thermal dye transfer capable of producing improved color gamut comprising a support having thereon a set of sequential repeating dye patches of yellow, magenta and cyan image dyes dispersed in a polymeric binder, the element also having at least one additional dye patch comprising a dye dispersed in a polymeric binder, the dye of each such additional dye patch which, when transferred to a dye image-receiving layer before or after transfer of the original yellow, magenta and cyan image dyes, has a hue measured at its maximum density which is outside the color gamut defined by the hues of the original transferred yellow, magenta and cyan image dyes by more than 5 CIELAB .DELTA.E.sub.c units.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: August 18, 1998
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Daniel J. Harrison, Elizabeth McInerney, Kevin E. Spaulding, Helmut Weber
  • Patent number: 5789342
    Abstract: A thermal dye transfer assemblage comprising:(I) a dye-donor element comprising a support having thereon sequentially repeating dye layer patches of a dye dispersed in a polymeric binder, at least one of the dye patches containinga) a deprotonated cationic dye which is capable of being reprotonated to a cationic dye having a N--H group which is part of a conjugated system, and at least one other of the dye patches containingb) a pendant basic-substituted dye having the formula:A-(L-B).sub.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: August 4, 1998
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Robert A. Guistina, Kristine B. Lawrence, Helmut Weber
  • Patent number: 5750323
    Abstract: Solid particle dispersions of compounds useful in imaging elements can be made with substantially improved stability to particle growth by dispersing the compound of interest in the presence of a relatively small amount of a second compound that is structurally similar to the compound of interest. This second compound is combined with the compound of interest prior to dispersing the compound of interest, i.e., prior to milling in the case of milled dispersions, and prior to precipitation in the case of pH or solvent precipitated dispersions. While being distinct, the second compound has a similar chemical structure to the main compound.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: May 12, 1998
    Assignee: Eastman Kodak Company
    Inventors: Raymond Peter Scaringe, David Darrell Miller, Mary Christine Brick, Leslie Shuttleworth, Margaret Jones Helber, Steven Evans