Patents by Inventor Donald R. Diehl

Donald R. Diehl 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: 5962211
    Abstract: The invention relates to a photographic element comprising at least one absorber dye and at least one sensitizing dye wherein the peak sensitivity of said absorber dye and said sensitizing dye are similar. This provides improved perceptual red detail in regions of high red density in the negative image.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: October 5, 1999
    Assignee: Eastman Kodak Company
    Inventors: Roupen H. Maronian, Donald R. Diehl, Pamela M. Ferguson
  • Patent number: 5683860
    Abstract: A silver halide light sensitive photographic element comprising a support bearing on one side thereof at least one light-sensitive silver halide emulsion layer, wherein the emulsion layer or a separate hydrophilic colloid layer of the element comprises a soluble absorber dye of the following formula (I): ##STR1## wherein each M is H or a counterion; each R.sup.1 and R.sup.2 independently represents H or a photographically acceptable substituent; m+p equals from 1 to 4; n+q equals from 1 to 4; and each of r and t represents from 0 to 3. In preferred embodiments of the invention, the element comprises at least one red-sensitive silver halide emulsion layer, and a dye of formula (I) is coated on the same side of the support as the red-sensitive emulsion layer.
    Type: Grant
    Filed: December 18, 1996
    Date of Patent: November 4, 1997
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Linda J. Beattie, Gary N. Barber
  • Patent number: 5635343
    Abstract: A substantially inert ultraviolet absorbing compound, and photographic elements containing them, which compound has a peak absorption at less than 400 nm and being of formula (I): ##STR1## wherein: X is O or NR.sub.8, Z represents the atoms necessary to complete a 5-membered or 6-membered heterocyclic ring which includes X and N, and the 3-position of the pyrazolone ring may independently be substituted or unsubstituted;R.sub.5 is alkyl, alkenyl, or arylalkyl any of which may be substituted or unsubstituted, or R.sub.5 may form a ring with a 3-position substituent on the pyrazolone ring or a 4-position substituent on the benzo ring;R.sub.7 is alkyl, alkenyl, aryl, or heterocycle, any of which may be substituted or unsubstituted, or H; andR.sub.8 is alkyl, alkenyl, or arylalkyl any of which may be substituted or unsubstituted, or H.
    Type: Grant
    Filed: August 28, 1995
    Date of Patent: June 3, 1997
    Assignee: Eastman Kodak Company
    Inventors: Donald P. Specht, Donald R. Diehl
  • Patent number: 5470695
    Abstract: Solid particle dispersions of dyes according to the formula: ##STR1## wherein D is selected from the group consisting of ##STR2## are disclosed as filter dyes for photographic elements. In this formula, R.sup.1, R.sup.2, and R.sup.3 are each independently hydrogen, substituted or unsubstituted alkyl, or substituted or unsubstituted alkoxy. At least one of R.sup.1, R.sup.2 and R.sup.3 is substituted or unsubstituted alkoxy, or two of R.sup.1, R.sup.2 and R.sup.3 together consist of --O--L--O-- and form a ring condensed with the phenyl ring to which they are attached wherein L is an alkylene linking group. R.sup.4, R.sup.5, R.sup.6, and R.sup.7 are each independently hydrogen, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl. R is a carboxy or sulfonamido substituent, and L.sup.1, L.sup.2 and L.sup.3 are each independently substituted or unsubstituted methine groups.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: November 28, 1995
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Glenn M. Brown
  • Patent number: 5466813
    Abstract: Imine dyes useful in photographic materials have the formula ##STR1## wherein R.sup.1, E.sup.1, E.sup.2, L.sup.1, L.sup.2, L.sup.3,D and m are defined as in the specification.Solid particle dispersions of dyes of formula (I) that contain at least one base-ionizable functional group such as carboxy, sulfonamido, or sulfamoyl are useful as filter dyes in photographic elements.
    Type: Grant
    Filed: July 20, 1993
    Date of Patent: November 14, 1995
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Margaret J. Helber, Hugh Williamson
  • Patent number: 5464736
    Abstract: A photographic element having a silver halide emulsion sensitized by dye of the formula I: ##STR1## wherein: R.sup.1 represents a substituted or unsubstituted aromatic or heteroaromatic group, a substituted or unsubstituted alkyl or H;R.sup.2 represents a substituted or unsubstituted alkyl, alkenyl, aryl, aralkyl, or H;E.sup.1 represents an electron withdrawing group;Z represents the non-metallic atoms required to complete a substituted or unsubstituted ring system containing at least one 5- or 6-membered heterocyclic nucleus;L.sup.1, L.sup.2, L.sup.5 and L.sup.6 independently represent a substituted or unsubstituted methine;m may be 0, 1, 2 or 3;n may be 0 or 1.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: November 7, 1995
    Assignee: Eastman Kodak Company
    Inventors: Margaret J. Helber, Thomas R. Dobles, Donald R. Diehl, Heidi E. Dankosh, John D. Mee
  • Patent number: 5451494
    Abstract: A photographic element containing a dye of the structure (I) as a filter dye: ##STR1## wherein: G is oxygen, substituted nitrogen, or C(CN).sub.2 ;R.sup.1, R.sup.1 ', R.sup.2, R.sup.2 ' independently represent H or a substituent, or R.sup.1 and R.sup.2, R.sup.1 ' and R.sup.2 ' may form a ring;R.sup.3 is an alky, aryl, alkyloxy, aryloxy, amino, or heterocyclic, any of which may be substituted or unsubstituted;m is 0, 1, 2 or 3;all of the L together define a methine chain, each L representing a methine any of which may be substituted or unsubstituted; andM.sup.+ is a cation.
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: September 19, 1995
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Margaret J. Helber, Pamela M. Ferguson, Anne E. Edwards, Nona V. Spitzner
  • Patent number: 5399690
    Abstract: Solid particle dispersions of dyes according to the formula: ##STR1## wherein D is selected from the group consisting of ##STR2## and ketomethylene nuclei are disclosed as filter dyes for photographic elements.In this formula, E.sup.1 and E.sup.2 are each independently electron withdrawing groups. R.sup.1 and R.sup.6 are each independently R or NHR, where R is aryl. R.sup.2 and R.sup.3 are each independently alkyl or aryl, or represent the carbon atoms necessary to form a fused ring with the phenyl ring to which the N atom is attached. R.sup.4 and R.sup.7 are each independently hydrogen, alkyl or aryl. R.sup.5 is alkyl. Z represents the atoms necessary to complete a 5 or 6 memebered heterocyclic nucleus. M.sup.+ is a cation. L.sup.1 through L.sup.7 are each independently methine groups. m is 0, 1, 2, or 3. n is 0 or 1. p is 0, 1, 2, 3, or 4. q is 0, 1, 2, or 3. At least one of R.sup.1 or D includes an aryl ring substituted with a carboxy or sulfonamido substituent.
    Type: Grant
    Filed: February 10, 1993
    Date of Patent: March 21, 1995
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Glenn M. Brown, Margaret J. Helber
  • Patent number: 5283165
    Abstract: Pyrrolinone dyes, and photographic materials containing them, which dyes have the formula: ##STR1## wherein; E.sup.1 represents an electron withdrawing group;R.sup.1 represents an aryl group of 6 to 14 carbon atoms or an alkyl group of from 1 to 12 carbon atoms;R.sup.2 represents an alkyl or alkylthio group of 1 to 20 carbon atoms, or an alkenyl group of 2 to 20 carbon atoms, or an aryl, aralkyl, heterocyclic or cycloalkyl group any of which have 5 to 14 carbon atoms, or R2 represents a hydroxy, cyano, chloro, nitro or hydrogen;M.sup.+ is a cation;each L represents a methine group;m is 0, 1, 2, or 3; and D is a moiety in conjugation with the oxygen of the pyrollinone ring.The dyes are particularly useful as solid particle filter dye dispersions in photographic elements.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: February 1, 1994
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Margaret J. Helber, Louis J. Rossi
  • Patent number: 5266454
    Abstract: Solid particle dispersions of dyes according to the formula: ##STR1## wherein D is selected from the group consisting of ##STR2## are disclosed as filter dyes for photographic elements. In this formula, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each independently hydrogen, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl. R is a carboxy or sulfonamido substituent. L.sup.1 through L.sup.5 are each independently substituted or unsubstituted methine groups, and m is 0 or 1. The dyes of the invention are particularly useful as filter dyes for light in the ultraviolet and short blue wavelength regions of the spectrum.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: November 30, 1993
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Glenn M. Brown
  • Patent number: 5260179
    Abstract: Imine dyes useful in photographic materials have the formula ##STR1## wherein D is selected from ##STR2## and wherein E.sup.1, E.sup.2, E.sup.3, and E.sup.4 each individually represents strongly electron-withdrawing groups; R.sup.1 and R.sup.6 each individually represents an alkyl group of 1 to about 8 carbon atoms, or an aralkyl or cycloalkyl group of 5 to about 10 carbon atoms, or an aryl group of 6 to about 14 carbon atoms; R.sup.2, R.sup.3, and R.sup.11 each individually represents an alkyl group of 1 to about 8 carbon atoms, or an alkenyl group of 2 to about 8 carbon atoms, or an aryl, aralkyl, or cycloalkyl group of 5 to about 14 carbon atoms; or R.sup.2 and R.sup.3 individually represent the non-metallic atoms necessary to form a 5- or 6-membered fused ring with the phenyl ring to which the nitrogen is attached, or together represent the non-metallic atoms required to form a 5- or 6-membered ring with each other; R.sup.4, R.sup.7, R.sup.8, R.sup.9, and R.sup.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: November 9, 1993
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Margaret J. Helber, Hugh Williamson
  • Patent number: 5213956
    Abstract: Solid particle dispersions of dyes according to the formula: ##STR1## wherein D is selected from the group consisting of ##STR2## and ketomethylene nuclei are disclosed as filter dyes for photographic elements.In this formula, E.sup.1 and E.sup.2 are each independently electron withdrawing groups R.sup.1 and R.sup.6 are each independently R or NHR, where R is substituted or unsubstituted aryl. R.sup.2 and R.sup.3 are each independently substituted or unsubstituted alkyl or substituted or unsubstituted aryl, or represent the carbon atoms necessary to form a fused ring with the phenyl ring to which the N atom is attached. R.sup.4 and R.sup.7 are each independently hydrogen, substituted or unsubstituted alkyl or substituted or unsubstituted aryl. R.sup.5 is substituted or unsubstituted alkyl Z represents the atoms necessary to complete a substituted or unsubstituted 5 or 6 membered heterocyclic nucleus. M.sup.+ is a cation. L.sup.1 through L.sup.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: May 25, 1993
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Glenn M. Brown, Margaret J. Helber
  • 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: 5098820
    Abstract: Solid particle dispersions of dyes according to the formula: ##STR1## are disclosed as filter dyes for photograhic elements. In this formula,m is 0 or 1.R.sub.1 and R.sub.2 are each independently substituted or unsubstituted alkyl or substituted or unsubstituted aryl, or together with R.sub.3 and R.sub.4 form a heterocyclic ring.R.sub.3 and R.sub.4 are each H or together with R.sub.1 and R.sub.2 form a heterocyclic ring.A is a ketomethylene residue.X represents a carboxyphenyl or sulfonamidophenyl, or a carboxy or sulfonamido substituent that is appended to an aryl ring that is part of A.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: March 24, 1992
    Assignee: Eastman Kodak Company
    Inventors: Michael J. McManus, Donald R. Diehl, Glenn M. Brown
  • Patent number: 5055387
    Abstract: Sensitizing dyes for photographic materials are disclosed. The dyes have the formula: ##STR1## R.sub.2 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl, andR.sub.1 and R.sub.3 are each independently substituted or unsubstituted alkyl, at least one of R.sub.1 and R.sub.3 having at least about 5 carbon atoms.
    Type: Grant
    Filed: March 13, 1990
    Date of Patent: October 8, 1991
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Michael C. Malec
  • Patent number: 4994356
    Abstract: Solid particle dispersions of dyes according to the formula: ##STR1## are disclosed as filter dyes for photographic elements. In this formula, n is 0 or 1.R.sub.1 is CO.sub.2 H or NHSO.sub.2 R.sub.2 where R.sub.2 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl.R.sub.3 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl.Z represents the atoms necessary to complete a substituted or unsubstituted heterocyclic nucleus.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: February 19, 1991
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Glenn M. Brown
  • Patent number: 4988611
    Abstract: A photographic element is disclosed for handling under a first radiation source and imagewise exposure to a second radiation source having a solid particle dispersion filter dye layer that absorbs radiation emitted to which the element is sensitive emitted by the first source.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: January 29, 1991
    Assignee: Eastman Kodak Company
    Inventors: Richard B. Anderson, Ronda E. Factor, Anthony Adin, Donald R. Diehl
  • Patent number: 4950586
    Abstract: Solid particle dispersions of dyes according to the formula: ##STR1## are useful as filter dyes in photographic elements. In this formula, n is 0 or 1. R.sub.1 and R.sub.2 are each independently substituted or unsubstituted alkyl or substituted or unsubstituted aryl, or taken together with R.sub.6, R.sub.7, N and the atoms to which they are attached, represent the atoms necessary to complete a julolydyl ring.R.sub.3 is H, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl.R.sub.4 and R.sub.5 each independently represents H, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, secondary or tertiary amino, CO.sub.2 H, or NHSO.sub.2 R.sub.8, with the proviso that at least one of R.sub.4 and R.sub.5 or a substituted on an aryl ring in R.sub.4 and R.sub.5 is CO.sub.2 H or NHSO.sub.2 R.sub.8. R.sub.8 is substituted or unsubstituted alkyl or substituted or unsubstituted aryl.R.sub.6 and R.sub.7 independently represents H, or R.sub.7 taken together with R.sub.2, or R.sub.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: August 21, 1990
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Ronda E. Factor
  • Patent number: 4948718
    Abstract: Solid particle dispersions of dyes according to the formula: ##STR1## are useful as filter dyes in photographic elements. In this formula, R.sub.1 and R.sub.2 are each independently substituted or unsubstituted alkyl or substituted or unsubstituted aryl, or together represent the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered ring.R.sub.3 and R.sub.4 each independently represents H, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, CO.sub.2 H, or NHSO.sub.2 R.sub.6. R.sub.5 is H, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, carboxylate, or substituted or unsubstituted acyl, R.sub.6 and R.sub.7 are each independently substituted or unsubstituted alkyl or substituted or unsubstituted aryl, and n is 1 or 2. R.sub.8 is either substituted or unsubstituted alkyl, or is part of a double bond between the ring carbon atoms to which R.sub.1 and R.sub.2 are attached.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: August 14, 1990
    Assignee: Eastman Kodak Company
    Inventors: Ronda E. Factor, Donald R. Diehl
  • Patent number: 4948717
    Abstract: Dyes having the structure ##STR1## A represents a substituted or unsubstituted nucleus selected from the group consisting of rhodanines, hydantoins, 2-thiohydantions, 4-thiohydantoins, 2,4-oxazolidindiones, 2-thio-2,4-oxazolidindiones, isoxazolinones, barbiturics, 2-thiobarbiturics, and indandiones, said nucleus having a carboxyphenyl substituent or sulfonamidophenyl substituent,R represents hydrogen, alkyl of 1 to 4 carbon atoms, or benzyl,R.sup.1 and R.sup.2 each independently represents alkyl or aryl, or taken together with R.sup.5, R.sup.6, N, and the carbon atoms to which they are attached represent the atoms needed to complete a julolydyl ring,R.sup.3 represents H, alkyl, or aryl,R.sup.5 and R.sup.6 each independently represents H, or R.sup.5 taken together with R.sup.1, or R.sup.6 taken together with R.sup.2, each may represent the atoms necessary to complete a carbocyclic ring, andm is 0 or 1are disclosed. The dyes are useful as filter dyes in photographic filter layers.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: August 14, 1990
    Assignee: Eastman Kodak Company
    Inventors: Donald R. Diehl, Ronda E. Factor