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: 5555889
    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: February 4, 1994
    Date of Patent: September 17, 1996
    Assignee: Cedars-Sinai Medical Center
    Inventors: Hrayr S. Karagueuzian, George A. Diamond, Steven S. Khan, Timothy A. Denton, Steven Evans
  • Patent number: 5547728
    Abstract: An optical recording element having a transparent substrate and on the surface of said substrate, a recording layer and a light reflecting layer wherein recording layer comprises a mixture of a metallized formazan dye and cyanine dye and the unrecorded layer is such that the real part of the refractive index (N) at 780 nm is not less than 1.8 and the imaginary part (k) is not greater than 0.2.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: August 20, 1996
    Assignee: Eastman Kodak Company
    Inventors: Michael P. Cunningham, Steven Evans
  • Patent number: 5512532
    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 substituted with a reactive primary or secondary aliphatic or primary aromatic amino group, and(b) a dye-receiving element comprising a support having thereon a 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 dye image-receiving layer, the dye image-receiving layer comprising a polymer containing a plurality of .beta.-diketone, .beta.-ketoester or .beta.-ketoamide functional groups.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: April 30, 1996
    Assignee: Eastman Kodak Company
    Inventors: David B. Bailey, Wayne A. Bowman, Steven Evans, Kristine B. Lawrence, John M. Noonan
  • Patent number: 5510314
    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 substituted with a reactive primary or secondary aliphatic amino group, and(b) a dye-receiving element comprising a support having thereon a 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 dye image-receiving layer, the dye image-receiving layer comprising a polymer containing a plurality of functional groups:R.sup.2 --CO--X--R.sup.3wherein:R.sup.2 represents alkyl, aryl, alkoxy or aryloxy;X represents oxygen or sulfur; andR.sup.3 represents aryl or hetaryl;with the proviso that R.sup.2 or R.sup.2 and R.sup.3 are directly attached to the polymer chain.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: April 23, 1996
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Kristine B. Lawrence, Ellen J. Pyszczek
  • Patent number: 5503956
    Abstract: A black laser dye-ablative recording element comprising a support having thereon a dye layer comprising a mixture of at least one cyan, magenta and yellow dye dispersed in a polymeric binder, said dye layer having an infrared-absorbing material associated therewith, said cyan dye having the formula: ##STR1## wherein: R.sup.1, R.sup.2, R.sup.3, X, Y, J and m are as defined.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: April 2, 1996
    Assignee: Eastman Kodak Company
    Inventors: Linda Kaszczuk, Steven Evans, Richard W. Topel, Jr.
  • Patent number: 5451485
    Abstract: A dye-ablative recording element comprising a support having thereon an interlayer containing an inorganic hydrate salt, the interlayer being overcoated with a dye layer comprising an image dye dispersed in a polymeric binder, and the dye layer having an infrared-absorbing material associated therewith.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: September 19, 1995
    Assignee: Eastman Kodak Company
    Inventors: Linda Kaszczuk, Lee W. Tutt, Richard W. Topel, Jr., Steven Evans
  • Patent number: 5369081
    Abstract: A dye donor element for thermal dye transfer comprising a support having thereon a dye in a polymeric binder, the dye being a 4-nitro-pyrazol-5-yl-azoaniline magenta dye, such as one having the formula: ##STR1##
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: November 29, 1994
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Max A. Weaver, Helmut Weber
  • Patent number: 5369080
    Abstract: A cyan dye-donor element for thermal dye transfer imaging comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, wherein the dye comprises a mixture of at least two different cyan dyes, each of the dyes comprising a 2-carbamoyl-4-[N-(p-substituted aminoaryl)imino]-1,4-naphthoquinone, with the proviso that at least one dye is present at a concentration of at least 10 wt.% and that same dye also contains an alkyl group substituted with a group capable of intermolecular hydrogen bonding.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: November 29, 1994
    Assignee: Eastman Kodak Company
    Inventors: Kristine B. Lawrence, Steven Evans
  • Patent number: 5340789
    Abstract: A cyan dye-donor element for thermal dye transfer imaging comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, wherein the dye comprises a mixture of at least three different 2-carbamoyl-4-[N-(p-aminoaryl)-imino]-1,4-naphthoquinone dyes, each of the dyes having the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each individually represents a substituted or unsubstituted alkyl group of from 1 to about 6 carbon atoms, a substituted or unsubstituted cycloalkyl group of from about 5 to about 7 carbon atoms, a substituted or unsubstituted aryl group of from about 5 to about 10 carbon atoms or an allyl group;R.sup.2 and R.sup.3 may be combined together to form a 5- or 6-membered ring;R.sup.2 and/or R.sup.3 may be combined with one or two of X to form a 5- or 6-membered ring;R.sup.4 and X each individually represents hydrogen, a substituted or unsubstituted alkyl group of from about 1 to about 6 carbon atoms, halogen, --NHCOR.sup.1 or --NHSO.sub.2 R.sup.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: August 23, 1994
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Noel R. Vanier
  • Patent number: 5340790
    Abstract: A cyan dye-donor element for thermal dye transfer imaging comprising a support having thereon a dye layer comprising a dye dispersed in a polymeric binder, wherein the dye comprises a mixture of at least two different 2-carbamoyl-4-[N-(p-aminoaryl)-imino]-1,4-naphthoquinone dyes, each of the dyes having the formula: ##STR1## with the proviso that at least 50% of the dye mixture is a dye having the formula: ##STR2## and with the further proviso that at least one of the other dyes in the mixture has the formula: ##STR3##
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: August 23, 1994
    Assignee: Eastman Kodak Company
    Inventors: Raymond P. Scaringe, Steven Evans, William H. Simpson, Richard C. Vanhanehem
  • Patent number: 5294471
    Abstract: There is disclosed a recordable optical element that includes a metallized dye. The element has a transparent substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer. The improvement is that the dye is a metal complex of a metallized formazan dye. The dyes that are used in the element are very light stable.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: March 15, 1994
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Csaba A. Kovacs
  • Patent number: 5274749
    Abstract: A method of interpreting a problem statement and providing goals for solving the problem includes storing in electronic memory a plurality of goal statements, each indicating the educational purpose of a subject matter area;forming in electronic memory a semantic network by storing a plurality of key words associated with each of the goal statements; the goal statement address of each of said key words, a list of any synonyms for each of said key words, a list of any terms generic to each of said key words, and a list of any terms which are a species of said key words, each key word being given a specific address location, each of said key words, synonyms, generic and species terms being thereby interlinked to one another and to each goal statement associated therewith and for each goal statement, each key word thereof being linked to the corresponding key word in memory and to its synonyms, generic and species terms.
    Type: Grant
    Filed: October 8, 1991
    Date of Patent: December 28, 1993
    Assignee: Health Care Expert Systems, Inc.
    Inventor: Steven Evans
  • Patent number: 5264320
    Abstract: A black dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of at least one cyan, magenta and yellow dyes dispersed in a polymeric binder, at least one of the cyan dyes having the formula: ##STR1## and at least one of the yellow dyes having the formula: ##STR2## and at least one of the magenta dyes having the formula:
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: November 23, 1993
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Derek D. Chapman
  • Patent number: 5215957
    Abstract: A thermally-transferred color filter array element comprising a support having thereon a polymeric dye image-receiving layer containing a thermally-transferred image comprising a repeating pattern of colorants of a benz-cd-indole merocyanine blue dye having the formula: ##STR1## wherein: R represents hydrogen; a substituted or unsubstituted alkyl group having from 1 to about 8 carbon atoms; a substituted or unsubstituted alkenyl group having from about 2 to about 8 carbon atoms; or a substituted or unsubstituted aralkyl group having from about 7 to about 12 carbon atoms; andZ represents the atoms necessary to complete a 5- or 6-membered carbocyclic or heterocyclic ring.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: June 1, 1993
    Assignee: Eastman Kodak Company
    Inventors: Leslie Shuttleworth, Helmut Weber, Steven Evans
  • Patent number: 5177052
    Abstract: A cyan dye-donor element for thermal dye transfer comprising a yellow dye and a mixture of cyan dyes dispersed in a polymeric binder, at least one of the cyan dyes having the formula: ##STR1##
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: January 5, 1993
    Assignee: Eastman Kodak Company
    Inventors: Joseph H. Ambro, Derek D. Chapman, Steven Evans
  • Patent number: 5162292
    Abstract: A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer comprising a lubricating material, with or without a binder, the lubricating material comprising an an organic phosphonic acid or a salt thereof having the formula: ##STR1## wherein: R.sup.1 represents a substituted or unsubstituted alkylene group or perfluoroalkylene group;R.sup.2 represents an alkyl group, a perfluoroalkyl group, an alkyl- or aryl-terminated polyoxyalkylene group or an aryl group; with the proviso that the total number of carbon atoms in R.sup.1 and R.sup.2 are at least nine;J represents an optional linking group selected from the group consisting of ##STR2## and n is 0 or 1.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: November 10, 1992
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, Gary W. Allen, Noel R. Vanier
  • Patent number: 5155088
    Abstract: A dye-donor element for thermal dye transfer comprises a support having thereon a dye dispersed in a polymeric binder, the dye having the formula: ##STR1## wherein R.sup.1 and R.sup.4 each independently represents a substituted or unsubstituted alkyl group having from 1 to 6 carbon atoms, a substituted or unsubstituted cycloalkyl group having from 5 to 7 carbon atoms, a substituted or unsubstituted aryl group having from 6 to about 10 carbon atoms, a substituted or unsubstituted hetaryl group having from 5 to about 10 carbon atoms or an allyl group;R.sup.2 represents R.sup.1 or hydrogen;or R.sup.1 and R.sup.2 may be taken together to represent the atoms necessary to complete a 5- to 7-membered ring;or one or both of R.sup.1 and R.sup.2 can be combined with one or two of R.sup.3 to form one or two 5- to 7-membered rings;R.sup.3 and R.sup.5 each independently represents R.sup.1, halogen, an alkoxy group, an acylamido group, a cyano group, an alkylthio group or an arylthio group;or one or two of R.sup.
    Type: Grant
    Filed: April 30, 1991
    Date of Patent: October 13, 1992
    Assignee: Eastman Kodak Company
    Inventors: Steven Evans, William H. Moore, Max A. Weaver
  • Patent number: 5134115
    Abstract: A dye-donor element for thermal dye transfer comprises a suppport having thereon a dye dispersed in a polymeric binder, the dye comprising a cyan azamethine dye having the formula: ##STR1##
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: July 28, 1992
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Steven Evans
  • Patent number: 5134116
    Abstract: A black dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of at least one cyan, magenta and yellow dyes dispersed in a polymeric binder, at least one of the cyan dyes having the formula: ##STR1## and at least one of the yellow dyes having the formula: ##STR2## and at least one of the magenta dyes having the formula: ##STR3##
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: July 28, 1992
    Assignee: Eastman Kodak Company
    Inventors: Derek D. Chapman, Steven Evans
  • Patent number: 5132273
    Abstract: A black dye-donor element for thermal dye transfer comprising a support having thereon a dye layer comprising a mixture of at least one cyan, magenta and yellow dyes dispersed in a polymeric binder, at least one of the cyan dyes having the formula: ##STR1## and at least one of the yellow dyes having the formula: ##STR2## and at least one of the magenta dyes having the formula: ##STR3##
    Type: Grant
    Filed: September 11, 1991
    Date of Patent: July 21, 1992
    Assignee: Eastman Kodak Company
    Inventors: Derek D. Chapman, Steven Evans