Patents Represented by Attorney Robert A. Gerlach
  • Patent number: 5536627
    Abstract: A photographic element comprising a support having a front side and a back side, an image forming layer on the front side of the support, a protective overcoat on the front side of the Support further removed from the support than the image forming layer, the protective overcoat comprising process surviving matte particles in a hydrophilic binder, the matte particles having a Rockwell hardness of less than M90, the back side of the support having a protective overcoat layer, the protective overcoat layer being the layer furthest removed from the back side of the support and comprising a hydrophobic material having a Delta haze less than 30%.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: July 16, 1996
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Alfred B. Fant, Dennis E. Smith
  • Patent number: 5532118
    Abstract: An imaging element comprising a light-sensitive imaging layer and a polyester film support having coated thereon greater than 0.17 gm/m.sup.2 of a layer of a self-crosslinking polyurethane derived from an isocyanate terminated prepolymer extended with an aliphatic polyamine and end-capped with N-methylol hydrazide groups, the prepolymer being derived from (a) a diisocyanate, and (b) a polyester polyol and having pendant water dispersing, carboxylic salt groups on the polymer chain.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 2, 1996
    Assignee: Eastman Kodak Company
    Inventors: Charles L. Bauer, Mary A. Krenceski, John J. Fitzgerald
  • Patent number: 5529737
    Abstract: A method of making a cellulose triacetate photographic film base which includes delivering a dope solution of from 15 to 35 wt % of cellulose triacetate in dichloromethane based on the total weight of the solution under a pressure of from 7 atmospheres to 50 atmospheres and a temperature of from 41.degree. C. to 63.degree. C. to a surface maintained at atmospheric pressure; the surface being maintained at a temperature below the boiling point of dichloromethane.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: June 25, 1996
    Assignee: Eastman Kodak Company
    Inventors: Eric E. Arrington, Randall J. Kehl
  • Patent number: 5529891
    Abstract: An imaging element having a support, at least one light-sensitive layer and a protective layer containing a binder and lubricating particles, said lubricating particles having a volume of at least 0.085 .pi.t.sup.3 where t is the dry thickness of the protective layer.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: June 25, 1996
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Alfred B. Fant, Kurt M. Schroeder, Gary W. Visconte
  • Patent number: 5525445
    Abstract: A recording element having at least one layer comprising a crosslinked polymer having polymeric backbone moieties and crosslinking moieties, the polymeric backbone moieties containing tertiary nitrogen atoms, the crosslinking moieties connecting polymeric backbone moieties at the teritary nitrogen atoms by conversion of the tertiary nitrogen atoms to quaternary amine, the crosslinking moiety having the structure ##STR1## where R' is independently alkyl or aryl and m is an integer of from 1 to 10.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: June 11, 1996
    Assignee: Eastman Kodak Company
    Inventors: Catherine A. Falkner, John J. Fitzgerald, Dennis J. Savage, Paul D. Yacobucci
  • Patent number: 5520954
    Abstract: A method of making a transparent magnetic recording layer which comprises forming a concentrated aqueous magnetic dispersion (A) of from 10 to 50 percent by weight ferromagnetic particles having a specific surface area of at least 30 m.sup.2 /gm and from 0.5 to 20 percent by weight of a dispersing agent; adding the concentrated aqueous magnetic dispersion (A) to a viscosity increasing hydrophilic polymer in water (B) such that the concentration of the hydrophilic cobinder is from 0.5 to 3 percent by weight based on the total weight of (A) and (B); diluting the resulting dispersion (A) plus (B) with water to give a dispersion (C) having a concentration of from 0.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: May 28, 1996
    Assignee: Eastman Kodak Company
    Inventors: George L. Oltean, Robert O. James, Brian S. White, David B. Bailey
  • Patent number: 5514528
    Abstract: A photographic element comprising a polyester support and at least one light-sensitive layer on one side of the polyester support, an antistatic layer on the other side of the support, the antistatic layer including a conductive metal oxide in a hydrophilic binder, the antistatic layer being overcoated with a layer containing a cellulose ester binder, and a solvent cast subbing layer disposed between the antistatic layer and the polyester support.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: May 7, 1996
    Assignee: Eastman Kodak Company
    Inventors: Janglin Chen, John F. DeCory
  • Patent number: 5503968
    Abstract: A method of making resin coated photographic paper which comprises providing a paper base, subjecting the paper base to a flame treatment and a corona discharge treatment, providing a polyolefin melt curtain, treating the polyolefin resin melt curtain with a mixture of ozone and air and bringing the paper base in contact with the polyolefin melt curtain to provide a uniform layer of polyolefin resin on the paper base.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: April 2, 1996
    Assignee: Eastman Kodak Company
    Inventor: Jong S. Lee
  • Patent number: 5498512
    Abstract: A photographic element having a light-sensitive layer and a transparent magnetic recording layer, the transparent magnetic recording layer comprising ferromagnetic particles having a ferromagnetic core and a shell of tin oxide or metal antimonate in a binder.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: March 12, 1996
    Assignee: Eastman Kodak Company
    Inventors: Robert O. James, Lawrence A. Rowley, George L. Oltean
  • Patent number: 5492960
    Abstract: A method of making polymeric particles of at least 1.0 micrometer which comprises forming at atmospheric conditions droplets of an ethylenically unsaturated monomer the monomer being liquid at standard conditions of 0.degree. C. and one atmosphere pressure, together with from about 0.01 to about 5 percent by weight, based on the weight of the monomer, of a nonreactive compound in an aqueous medium, the nonreactive compound having a solubility in water less than that of the ethylenically unsaturated monomer, the aqueous medium containing a surfactant or organic hydrophilic colloid, the monomer droplets being formed by using only sufficient energy to achieve a size of 1.0 micrometer or larger, and polymerizing the ethylenically unsaturated monomer.
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: February 20, 1996
    Assignee: Eastman Kodak Company
    Inventors: John L. Muehlbauer, Dennis E. Smith, Thomas H. Whitesides
  • Patent number: 5491051
    Abstract: A photographic element comprising a support having provided thereon a light-sensitive layer and a transparent magnetic recording layer, the magnetic recording layer comprising a transparent polymeric binder, ferro-magnetic particles and abrasive particles, the magnetic particles having a surface area greater than 30 m.sup.2 /gm and a coverage of from about 1.times.10.sup.-11 mg/.mu.m.sup.3 to about 1.times.10.sup.-10 mg/.mu.m.sup.3, the abrasive particles having a median diameter of from about 0.2 to about 0.4 .mu.m, specific surface area greater than 5 m.sup.2 /gm, a Mohs hardness of at least 6 and being present in the transparent magnetic layer in an amount of at least about 30% by weight based on the weight of the magnetic particles present.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: February 13, 1996
    Assignee: Eastman Kodak Company
    Inventors: John F. DeCory, Robert O. James, Kenneth L. Tingler, Ronald M. Wexler
  • Patent number: 5472833
    Abstract: A process for making a photographic film support comprising applying a film forming coating composition containing an antistat agent to a first clear transparent polymeric film to form an antistat layer on the polymeric film and overcoating the free surface of the antistat layer with a second polymeric film having the same chemical composition as the first polymeric film.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: December 5, 1995
    Assignee: Eastman Kodak Company
    Inventors: Charles T. Havens, John E. Rieth, Alfred B. Fant, Raymond T. Jones
  • Patent number: 5466723
    Abstract: A radiation curable adhesive composition which comprises from 15 to 85 percent by weight of beta-carboxyethyl acrylate and from 85 to 15 percent by weight of 2-phenoxyethyl acrylate based on the total weight of the composition.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: November 14, 1995
    Assignee: Eastman Kodak Company
    Inventor: Billy R. Dotson
  • Patent number: 5455153
    Abstract: Clad fibrous vanadium pentoxide, antistat layers containing clad fibrous vanadium pentoxide and imaging elements containing such antistat layers.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: October 3, 1995
    Assignee: Eastman Kodak Company
    Inventor: Sylvia A. Gardner
  • Patent number: 5455320
    Abstract: A method of making polymeric particles by forming a suspension of ethylenically unsaturated monomer droplets in water, the water containing a particulate suspension agent, the monomer droplets containing a nonreactive hydrophobic compound where the water solubility of the nonreactive compound is less than that of the monomer and polymerizing the monomer droplets.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: October 3, 1995
    Assignee: Eastman Kodak Company
    Inventors: John L. Muehlbauer, Dennis E. Smith, Thomas H. Whitesides
  • Patent number: 5451495
    Abstract: A recording element having at least one layer comprising a crosslinked polymer having polymeric backbone moieties and crosslinking moieties, the polymeric backbone moieties containing tertiary nitrogen atoms, the crosslinking moieties connecting polymeric backbone moieties at the teritary nitrogen atoms by conversion of the tertiary nitrogen atoms to quaternary amine, the crosslinking moiety having the structure ##STR1## where R' is independently alkyl or aryl and m is an integer of from 1 to 10.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: September 19, 1995
    Assignee: Eastman Kodak Company
    Inventors: Catherine A. Falkner, John J. Fitzgerald, Dennis J. Savage, Paul D. Yacobucci
  • Patent number: 5447832
    Abstract: An imaging element comprising a support, at least one light-sensitive layer and at least one coalesced layer of film-forming colloidal polymeric particles and non-film-forming colloidal polymeric particles.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: September 5, 1995
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Charles C. Anderson
  • Patent number: 5436120
    Abstract: A photographic element comprising a support having provided thereon a light-sensitive layer, a transparent magnetic recording layer, and a transparent reinforced filler layer coated over the transparent magnetic recording layer, the transparent magnetic recording layer comprising a transparent polymeric binder and ferro-magnetic particles, the magnetic particles having a surface area greater than 30 m.sup.2 /gm and a coverage of from about 1.times.10.sup.-11 mg/.mu.m.sup.3 to about 3.times.10.sup.-10 mg/.mu.m.sup.3, the transparent reinforced filler layer comprising a transparent polymeric binder and filler particles, the filler particles having a median diameter of less than 0.15 .mu.m, a Mobs hardness of at least 6 and being present in an amount of from about 20 to about 300 percent by weight based on the weight of the polymeric binder.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: July 25, 1995
    Assignee: Eastman Kodak Company
    Inventors: Ronald M. Wexler, James R. Owen, Lawrence A. Rowley
  • Patent number: 5434037
    Abstract: A photographic element comprising a support having provided thereon a light-sensitive layer, a transparent magnetic recording layer, and a transparent abrasive layer coated over the transparent magentic recording layer, the transparent magnetic recording layer comprising a transparent polymeric binder and ferro-magnetic particles having a surface area greater than 30 m.sup.2 /gm and a coverage of from about 1.times.10.sup.-11 mg/.mu.m.sup.3 to about 3.times.10.sup.-10 mg/.mu.m.sup.3, the abrasive layer comprising a transparent polymeric binder and abrasive particles having a median diameter of from about 0.2 to about 0.4 .mu.m, a specific surface area greater than 5 m.sup.2 /gm, a Mobs hardness of at least 6 and being present in an amount of at least about 5.times.10.sup.-12 mg/.mu.m.sup.3.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: July 18, 1995
    Assignee: Eastman Kodak Company
    Inventors: Ronald M. Wexler, Robert O. James, Lawrence A. Rowley
  • Patent number: 5432050
    Abstract: A photographic element comprising a support having provided thereon a light-sensitive layer and a transparent magnetic recording layer, the magnetic recording layer comprising a transparent polymeric binder, ferro-magnetic particles and reinforcing filler particles, the magnetic particles having a surface area greater than 30 m.sup.2 /gm and a coverage of from about 1.times.10.sup.-11 mg/.mu.m.sup.3 to about 1.times.10.sup.-10 mg/.mu.m.sup.3, the filler particles having a median diameter less than 0.15 .mu.m, a Mohs hardness of at least 6 and being present in the transparent magnetic layer in an amount of about 20% to about 300% by weight based on the weight of the polymeric binder present.
    Type: Grant
    Filed: February 8, 1994
    Date of Patent: July 11, 1995
    Assignee: Eastman Kodak Company
    Inventors: Robert O. James, Lawrence A. Rowley, Joseph A. Verdone, Ronald M. Wexler