Patents by Inventor David Hoke
David Hoke 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: 6172260Abstract: Disclosed is a carbamyl chloride of an aminoarylcarbonyl compound having the structural formula I: wherein R is an alkyl, alkenyl, or aryl group; A is an aryl (including heteroaryl) ring group; each R′ is independently an alkyl group which may form a ring with Z or Z′; p is 0, 1, 2, or 3; each Z, Z′, and Y is independently hydrogen or a substituent; and n is 0, 1, or 2.Type: GrantFiled: December 31, 1998Date of Patent: January 9, 2001Assignee: Eastman Kodak CompanyInventors: Chang-Kyu Kim, Jared B. Mooberry, David Hoke, James J. Seifert
-
Patent number: 6132944Abstract: Disclosed is a photographic element containing a light sensitive silver halide emulsion layer having associated therewith a coupler represented by Formula I: ##STR1## wherein COUP is a coupler parent group capable of reacting with an oxidized developer to form a first dye and is bonded at a coupling position to the group ##STR2## wherein X is a or NSO.sub.2 R; R is an alkyl or aryl group; and DYE is a releasable second dye that is after release the same color as the first dye and is linked to OC.dbd.X by a moiety of the DYE having Formula (IA): ##STR3## wherein R.sup.2 is a substituent; provided there is contained in the coupler of Formula I at least one group of Formula IB:--L.sub.m --Sol IBwherein L is a divalent linking group and m is 0 or 1; and Sol is a group containing an acidic hydrogen selected from the group consisting of --ArOH, --NHSO.sub.2 R.sup.1 and --SO.sub.2 NHR.sup.1, in which AR is an aromatic group and each R.sup.Type: GrantFiled: November 4, 1999Date of Patent: October 17, 2000Assignee: Eastman Kodak CompanyInventors: Jared B. Mooberry, Steven M. Bonser, Kevin P. Dockery, David Hoke, Chang-Kyu Kim, James J. Seifert, David T. Southby, Zheng Z. Wu
-
Patent number: 6124503Abstract: A method of making an alkylaminoarylcarbonyl compound having Formula I: ##STR1## wherein R is an alkyl group;A is an aryl (including heteroaryl) ring;each R' is independently an alkyl group which may form a ring with Z or Z';p is 0, 1, 2, or 3;each Z, Z', and Y is independently hydrogen or a substituent; andn is 0, 1, or 2;comprising:(a) blocking the carbonyl function of an aminoarylcarbonyl compound via condensation with an active methylene compound(b) alkylating this blocked amniocarbonyl compound via reductive alkylation with an alkyl or aryl (including heteroaryl) carbonyl compound, and(c) deblocking of the blocked alkylaminoarylcarbonyl compound via base hydrolysis to regenerate the carbonyl function and give the desired alkylaminocarbonyl compound.Type: GrantFiled: December 31, 1998Date of Patent: September 26, 2000Assignee: Eastman Kodak CompanyInventors: Chang-Kyu Kim, Jared B. Mooberry, David Hoke, James J. Seifert
-
Patent number: 6120981Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a dye-foaming coupler compound and a sulfonamido compound (a) bearing on the sulfur atom of the sulfonamido group an alkyl group and (b) bearing on the nitrogen atom of the sulfonamido group both a hydrogen atom that exhibits a pKa value of less than 9 and a second substituent that is either (1) an aryl group containing one or more electron withdrawing substituents for which the sum of the Hammett's values (.SIGMA..sigma..sub.p) is greater than 0.5, or (2) a heteroaryl group.Type: GrantFiled: December 31, 1998Date of Patent: September 19, 2000Assignee: Eastman Kodak CompanyInventors: David Hoke, Jared B. Mooberry, Kathleen M. Yahn, Kevin P. Dockery, David T. Southby
-
Patent number: 5985532Abstract: The invention provides a photographic element comprising a light sensitive silver halide emulsion layer having associated therewith a dye-forming coupler having formula I: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl, aryl, and heterocyclic groups;R.sub.2 is selected from the group consisting of hydrogen, alkyl, aryl, and heterocyclic groups;W is C(O) or S(O).sub.2 ;R.sub.3 is selected from the group consisting of alkyl, alkoxy, aryl, aryloxy, and amino groups;each R.sub.4 is independently selected from the group consisting of alkyl, alkoxy, aryl, aryloxy, and alkylamino groups, and n is an integer from 1 to 4;Y is a substituent; andX is H or a coupling-off group;provided that the number of carbon atoms contained in R.sub.1, R.sub.2, R.sub.3 and R.sub.4 combined is at least 18 and provided further that any two or more of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be joined to form a ring.Type: GrantFiled: October 4, 1996Date of Patent: November 16, 1999Assignee: Eastman Kodak CompanyInventors: Judith A. Bose, Louis E. Friedrich, David Hoke, Joan C. Potenza, Robert F. Romanet, Stephen P. Singer, Ronald R. Valente
-
Patent number: 5981760Abstract: There are described intermediates for the preparation of known pyrazoloazole photographic magenta dye forming couplers and processes for making and using these intermediates. The intermediates are low molecular weight compounds represented by the structure: ##STR1## wherein: R, X, R.sup.1 and Y are defined herein. The process for making these intermediates involves diazotizing a 5-amino-1H-pyrazole to produce a 5-diazo-1H-pyrazole, then condensing the diazotized product with an active methine or methylene compound having a pKa of 14 or less to produce a substituted hydrazone and then subjecting the hydrazone to cyclization and reduction, in either order.Type: GrantFiled: January 27, 1997Date of Patent: November 9, 1999Assignee: Eastman Kodak CompanyInventors: Chang Kyu Kim, Joan Christine Potenza, Francesco DeBellis, David Hoke, Robert Fogg Romanet
-
Patent number: 5834166Abstract: The invention provides a photographic element which comprises a light-sensitive silver halide emulsion layer having associated therewith a cyan dye-forming coupler having the formula: ##STR1## wherein: each R.sub.1 independently represents an alkyl or aryl group;R.sub.2 represents a linear or branched alkyl group of 1 to 20 carbon atoms;R.sub.3 is selected from the group consisting of an alkyl group, an aryl group, a perfluoroalkyl group, or an arylamino group; andZ represents a hydrogen atom or a group capable of being split off by oxidized color developer.The element of the invention exhibits improved cyan dye light stability.Type: GrantFiled: October 31, 1996Date of Patent: November 10, 1998Assignee: Eastman Kodak CompanyInventors: Philip T.S. Lau, Stanley W. Cowan, David Hoke
-
Patent number: 5830632Abstract: Photographic element are described comprising a support bearing a photographic silver halide emulsion layer having associated therewith a micro-precipitated dispersion of a high dye-yield coupler having the formula:COUP--(T).sub.m --L--DYEwhere COUP is the coupler moiety of the coupler capable of reacting at the coupling position with oxidized color developer to form a first dye, T is one or more timing groups with m=0, 1 or 2, L is a linking group selected from the group consisting of --OC(O)--, --OC(S)--, --SC(O)--, --SC(S)--, or --OC(.dbd.NSO.sub.2 R)--, where R is a substituted or unsubstituted alkyl or aryl group, and DYE is a second dye or precursor thereof comprising an electrically neutral chromophore. The invention also provides a photographic coupler dispersion, a photographic silver halide emulsion, and a process for forming an image in a photographic element in accordance with the invention.Type: GrantFiled: October 31, 1996Date of Patent: November 3, 1998Assignee: Eastman Kodak CompanyInventors: Krishnan Chari, David Thomas Southby, David Hoke
-
Patent number: 5811228Abstract: The invention provides a multilayer color negative photographic element comprising a support, at least one light-sensitive silver halide emulsion layer sensitive to each of the blue, green and red regions of the visible spectrum, a magnetic recording layer, and a permanent density correction dye, wherein:the spectral absorbance maximum of the density correction dye is in the range of 450-485 nm;the ratio of the absorbance of the density correction dye at 480 nm relative to 420 nm is between 1.2 and 3.5;the ratio of the absorbance of the density correction dye at 440 nm relative to 420 nm is between 1.25 and 2.5;the ratio of the absorbance of the density correction dye at 510 nm relative to 480 nm is less than 0.6; andthe density correction dye is uncharged and is free of carboxyl and sulfonate groups.The element exhibits improved color balance permitting it to be satisfactorily processed together with conventional photographic elements to produce viewable color images.Type: GrantFiled: January 11, 1996Date of Patent: September 22, 1998Assignee: Eastman Kodak CompanyInventors: Paul Barrett Merkel, Melvin Michael Kestner, David Hoke
-
Patent number: 5725999Abstract: The invention provides a multilayer color negative photographic element comprising a support, at least one light-sensitive silver halide layer sensitive to each of the blue, green and red regions of the visible spectrum, a magnetic recording layer and a yellow or orange-yellow methine density correction dye of structure I, ##STR1## wherein R.sub.1 is hydrogen or an alkyl group;R.sub.2 is an alkyl group or an aryl group;R.sub.3 is hydrogen, a halogen atom, an alkyl group, an alkoxy group or an aryloxy group;R.sub.4 is hydrogen or an alkyl group;R.sub.5 is hydrogen or an alkyl group;R.sub.6 is hydrogen or an alkyl group;X is oxygen or sulfur;each R.sub.7 is independently a substituent selected from the group consisting of a halogen atom, and alkyl, aryl, alkoxy, aryloxy, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, acyl, sulfamoyl, sulfonyl, sulfoxyl, alkylthio, arylthio and cyano groups;R.sub.1 and R.sub.2 or R.sub.2 and R.sub.3 may join to form a ring.Type: GrantFiled: December 19, 1995Date of Patent: March 10, 1998Assignee: Eastman Kodak CompanyInventors: Paul Barrett Merkel, Melvin Michael Kestner, David Hoke, Jeffrey Walter Schmoeger
-
Patent number: 5681691Abstract: The invention provides a photographic element comprising a light sensitive silver halide emulsion layer having associated therewith a dye-forming coupler having formula I: ##STR1## wherein R.sub.1 is selected from the group consisting of alkyl, aryl, and heterocyclic groups;R.sub.2 is selected from the group consisting of hydrogen, alkyl, aryl, and heterocyclic groups;W is C(O) or S(O).sub.2 ;R.sub.3 is selected from the group consisting of alkyl and aryl groups having a calculated logP of at least 9;Y is a substituent; andX is H or a coupling-off group.Type: GrantFiled: October 4, 1996Date of Patent: October 28, 1997Assignee: Eastman Kodak CompanyInventors: Judith A. Bose, Louis E. Friedrich, David Hoke, Joan C. Potenza, Robert F. Romanet, Stephen P. Singer, Ronald R. Valente
-
Patent number: 5565572Abstract: There are described intermediates for the preparation of known pyrazoloazole photographic magenta dye forming couplers and processes for making and using these intermediates. The intermediates are low molecular weight compounds represented by the structure: ##STR1## wherein: R, X, R.sup.1 and Y are defined herein.The process for making these intermediates involves diazotizing a 5-amino-1H-pyrazole to produce a 5-diazo-1H-pyrazole, then condensing the diazotized product with an active methine or methylene compound having a pKa of 14 or less to produce a substituted hydrazone and then subjecting the hydrazone to cyclization and reduction, in either order.Type: GrantFiled: June 7, 1995Date of Patent: October 15, 1996Assignee: Eastman Kodak CompanyInventors: Joan C. Potenza, Chang K. Kim, David Hoke, Robert F. Romanet
-
Patent number: 5457210Abstract: There are described intermediates for the preparation of known pyrazoloazole photographic magenta dye forming couplers and processes for making and using these intermediates. The intermediates are low molecular weight compounds represented by the structure: ##STR1## wherein: R, X, R.sup.1 and Y are defined herein.The process for making these intermediates involves diazotizing a 5-amino-1H-pyrazole to produce a 5-diazo-1H-pyrazole, then condensing the diazotized product with an active methine or methylene compound having a pKa of 14 or less to produce a substituted hydrazone and then subjecting the hydrazone to cyclization and reduction, in either order.Type: GrantFiled: April 22, 1994Date of Patent: October 10, 1995Assignee: Eastman Kodak CompanyInventors: Chang K. Kim, Joan C. Potenza, Francesco DeBellis, David Hoke, Robert F. Romanet
-
Patent number: 5457004Abstract: The invention provides a photographic element comprising a substrate bearing a photographic silver halide emulsion layer having associated therewith a high dye-yield coupler having the formula: ##STR1## wherein: COUP is a photographic coupler residue capable of coupling with oxidized color developer to form a first dye;T is a timing group;m is an integer from 0 to 2;L is a linking group selected from the group consisting of --OC(.dbd.O)--, --OC(.dbd.S)--, --SC(.dbd.O)--, --SC(.dbd.S)--, and --OC(.dbd.NSO.sub.2 R) where R is substituted or unsubstituted alkyl or aryl; andDYE is a releasable second dye or dye precursor having a particular formula including a methine dye chromophore.Type: GrantFiled: May 27, 1994Date of Patent: October 10, 1995Assignee: Eastman Kodak CompanyInventors: Jared B. Mooberry, James J. Seifert, David Hoke, Zheng Z. Wu, David T. Southby, Frank D. Coms
-
Patent number: 5447819Abstract: The invention provides a photographic element comprising a support bearing a photographic silver halide emulsion layer having associated therewith a high dye-yield coupler having the formula:COUP--(T).sub.m --L--DYEwhere COUP is the parent group of the coupler capable of reacting at the coupling position with oxidized color developer to form a first dye, T is one or more timing groups with m=1 or 2, L is a linking group selected from the group consisting of --OC(O)--, --OC(S)--, --SC(O)--, --SC(S)--, or --OC(.dbd.N SO.sub.2 R)--, where R is substituted or unsubstituted alkyl or aryl, and DYE is a second dye or precursor thereof, wherein there is present at least one T group that contains a substituent having the formula:--(LINK).sub.p --A--B--(C--D).sub.nwherein:LINK is an alkylene group capable of linking the above group to the group T, where p=0 or 1;A is a member selected from the group consisting of --NHCO--, --N(R')C(O)N(R--)--, --CONH--, --NR'SO.sub.2 --, --SO.sub.2 NR'--, and --OPO.sub.Type: GrantFiled: May 27, 1994Date of Patent: September 5, 1995Assignee: Eastman Kodak CompanyInventors: Jared B. Mooberry, James J. Seifert, David Hoke, Zheng Z. Wu, David T. Southby, Frank D. Coms
-
Patent number: 5441856Abstract: A photographic element, and a method of making such an element, comprising a cyan dummy dye present in the element prior to exposure and development. The particular cyan dummy dye has a high extinction coefficient, low density losses in seasoned bleach, while maintaining the desired hue and resisting density losses on cold storage. The dye has the formula:wherein: ##STR1## n is 1, 2 or 3; each R.sub.1 is an electron-withdrawing group which may be the same or different when n is 2 or 3;R.sub.2 is an alkyl group having from one to about 20 carbon atoms, a cycloalkyl group having from 3 to 8 carbon atoms in the ring, or an aryl group;R.sub.3 is any of the groups which R.sub.2 may be or is hydrogen;R.sub.4 is selected from the group consisting of alkylsulfonyl, arylsulfonyl, alkylsulfoxyl, arylsulfoxyl, sulfamoyl, alkylsulfonate, carbamoyl, alkoxycarbonyl and acyl groups;R.sub.5 is an alkyl group;R.sub.6 is hydrogen, or an alkyl group; andR.sub.7 is hydrogen or an alkyl group.Type: GrantFiled: December 17, 1993Date of Patent: August 15, 1995Assignee: Eastman Kodak CompanyInventors: Paul B. Merkel, David Hoke
-
Patent number: 5256529Abstract: A magenta dye-forming pyrazolotriazole coupler solubilized by one or two sulfonamido groups results in a coupler having increased coupling activity, low fog and good dispersability. The couplers are useful in photographic elements and react with oxidized silver halide to form dyes, and/or to release photographically useful groups.Type: GrantFiled: July 27, 1992Date of Patent: October 26, 1993Assignee: Eastman Kodak CompanyInventors: Robert F. Romanet, Hans G. Ling, David Hoke
-
Patent number: 5045442Abstract: Photographic materials contain cyan dye forming couplers having good ethyl acetate solubility. The coupler contains a coupling off group with an asymmetric carbon atom. Manufacture of the material is simplified and in some instances the activity of the coupler is increased.Type: GrantFiled: September 27, 1990Date of Patent: September 3, 1991Assignee: Eastman Kodak CompanyInventor: David Hoke
-
Patent number: 5008180Abstract: A photographic rocording material is disclosed which contains a phenolic cyan dye-forming coupler which has a sulfone or a modified sulfone group in the 5- position ballast moiety and a substituted acylamino group in the 2- position of the phenolic ring.Type: GrantFiled: February 2, 1990Date of Patent: April 16, 1991Assignee: Eastman Kodak CompanyInventors: Paul B. Merkel, David Hoke
-
Patent number: 4923791Abstract: A photographic recording material is disclosed which contains a phenolic cyan dye-forming coupler which has a carbonamido group or a ureido substituted group in the 2-position of the phenolic ring, and a ballast containing acylamino group in the 5-position of the ring. The ballast moiety comprises a sulfoxide, an amide, an ester, or a ketone group or a phosphine oxide group.Type: GrantFiled: April 7, 1989Date of Patent: May 8, 1990Assignee: Eastman Kodak CompanyInventors: Paul B. Merkel, David Hoke