Patents by Inventor Donald Singleton, Jr.
Donald Singleton, Jr. 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).
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Patent number: 6007974Abstract: This invention relates to a photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further containing an image modifying coupler which upon reaction with oxidized color developing agent during processing forms a dye, said image modifying coupler represented by the formula ##STR1## wherein COUP is a photographic coupler moiety;T.sup.1 is a timing or linking group;R.sup.1 and R.sup.2 are independently selected from a halide atom, or an aliphatic, carbocyclic, heterocyclic, carbamoyl, sulfamoyl, carbonamido, sulfonamido, acyl, sulfo, nitro, cyano, amino, alkoxy, alkoxyalkyl, aryloxy, aryloxyalkyl, thioalkoxy, thioalkoxyalkyl, thioaryloxy, or thioaryloxyalkyl group; andn is selected from 0, 1 or 2. More particularly this invention relates to a photographic element containing the above image modifying coupler wherein n is 0 and R.sup.1 and R.sup.2 are independently represented by the formula:**--(Z).sub.m -(X).sub.t -R.sup.Type: GrantFiled: February 6, 1998Date of Patent: December 28, 1999Assignee: Eastman Kodak CompanyInventors: William J. Begley, Frank D. Coms, Teh-Hsuan Chen, Donald Singleton, Jr.
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Patent number: 5962656Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formulaCOUP--T.sup.1 --T.sup.2 --(T.sup.3).sub.b --PUGwhereinCOUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 and T3 are timing or linking groups;T.sup.2 is an indazole timing or linking group which, after release from T.sup.1, functions by electron transfer down a conjugated chain to release T.sup.3 or PUG, and which is represented by the formula: ##STR1## wherein ** denotes the point of attachment to T.sup.1 and *** denotes the point of attachment to T.sup.3 or PUG;R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring;V is independently a substituent group as further defined;q is 0, 1, 2, 3 or 4;b is 0 or 1; andPUG is a photographically useful group.Type: GrantFiled: June 10, 1997Date of Patent: October 5, 1999Assignee: Eastman Kodak CompanyInventors: William James Begley, Teh Hsuan Chen, Donald Singleton, Jr., Frank Dino Coms
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Patent number: 5912110Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formula ##STR1## wherein COUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated chain, or by nucleophilic displacement reaction, to release from HETERO;HETERO is a heterocyclic group containing at least two heteroatoms independently selected from oxygen, nitrogen, or sulfur, wherein one of the heteroatoms is directly attached to T.sup.1 ;R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring; andPUG is a photographically useful group.Type: GrantFiled: June 10, 1997Date of Patent: June 15, 1999Assignee: Eastman Kodak CompanyInventors: William James Begley, Teh Hsuan Chen, Frank Dino Coms, Donald Singleton, Jr.
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Patent number: 5834604Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further comprising a photographic coupler represented by the formulaCOUP--(T.sup.1).sub.b --T.sup.2 --(T.sup.3).sub.c --PUGwherein the substituents are as defined in the specification.Type: GrantFiled: September 4, 1997Date of Patent: November 10, 1998Assignee: Eastman Kodak CompanyInventors: William James Begley, Frank Dino Coms, Teh-Hsuan Chen, Donald Singleton, Jr.
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Patent number: 5719017Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the element further comprising a photographic coupler represented by the formulaCOUP--(T.sup.1).sub.b --T.sup.2 --(T.sup.3).sub.c --PUGwhereinthe substituents are as defined herein the specification.Type: GrantFiled: October 17, 1996Date of Patent: February 17, 1998Assignee: Eastman Kodak CompanyInventors: William James Begley, Frank Dino Coms, Teh-Hsuan Chen, Donald Singleton, Jr.
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Patent number: 5686234Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formulaCOUP--T.sup.1 --T.sup.2 --(T.sup.3).sub.b --PUGwhereinCOUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated or unconjugated chain, or by nucleophilic displacement reaction, to release T.sup.2, T.sup.2 being an indazole timing or linking group which, after release from T.sup.1, functions by electron transfer down a conjugated chain to release T.sup.3 or PUG, and which is represented by the formula: ##STR1## wherein ** denotes the point of attachment to T.sup.1 and *** denotes the point of attachment to T.sup.3 or PUG;R.sup.1 and R.sup.Type: GrantFiled: January 24, 1996Date of Patent: November 11, 1997Assignee: Eastman Kodak CompanyInventors: William James Begley, Teh Hsuan Chen, Donald Singleton, Jr., Frank Dino Coms
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Patent number: 5670301Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formula ##STR1## wherein COUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated chain, or by nucleophilic displacement reaction, to release from HETERO;HETERO is a heterocyclic group containing at least two heteroatoms independently selected from oxygen, nitrogen, or sulfur, wherein one of the heteroatoms is directly attached to T.sup.1 ;R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring; andPUG is a photographically useful group.Type: GrantFiled: January 24, 1996Date of Patent: September 23, 1997Assignee: Eastman Kodak CompanyInventors: William James Begley, Teh Hsuan Chen, Frank Dino Coms, Donald Singleton, Jr.
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Patent number: 5358828Abstract: A color photographic element is disclosed comprising a support bearing at least one photographic silver halide emulsion layer, an image dye-forming coupler, and a coupler (A) capable of forming a compound that is washed out of the photographic element upon processing and capable of releasing a bleach accelerator group, wherein the coupler (A) is represented by the formula:(SOL).sub.x --COUP--(R.sup.1).sub.y --(R.sup.2).sub.Type: GrantFiled: June 29, 1992Date of Patent: October 25, 1994Assignee: Eastman Kodak CompanyInventors: William J. Begley, Stephen P. Singer, David T. Southby, Donald Singleton, Jr.
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Patent number: 5318879Abstract: A color photographic element is disclosed comprising a support bearing at least one photographic silver halide emulsion layer, an image dye-forming coupler, and a coupler (A) capable of forming a compound that is washed out of the photographic element upon processing and capable of releasing a bleach accelerator group, wherein the coupler (A) is represented by the formula:(SOL).sub.x --COUP--(R.sup.1).sub.y --(R.sup.2).sub.z --BLEACH.Type: GrantFiled: June 29, 1992Date of Patent: June 7, 1994Assignee: Eastman Kodak CompanyInventors: William J. Begley, Stephen P. Singer, David T. Southby, Donald Singleton, Jr.
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Patent number: 5286859Abstract: A method of forming a photographic coupler (A) having the formula:(SOL).sub.x --COUP--(R.sup.1).sub.y --(R.sup.2).sub.z --BLEACHcomprising:(a) providing a coupler (B) having a coupling-off group represented by the formula: ##STR1## (b) reacting said coupling-off group of coupler (B) with phosgene to provide a chloroformate coupling-off group of coupler (B)(c) reacting said chloroformate coupling-off group of coupler (B) in the presence of a strong base selected from the group consisting of triethylamine, N,N-diisopropylethylamine, and tetramethylguanine with:R.sup.14 --R.sup.13 --SHto provide the R.sup.2 group and the BLEACH group of the coupler (A).Type: GrantFiled: June 29, 1992Date of Patent: February 15, 1994Assignee: Eastman Kodak CompanyInventors: William J. Begley, Donald Singleton, Jr.
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Patent number: 5264583Abstract: A method of forming a washout photographic coupler comprising a coupler moiety (COUP) containing a substituted or unsubstituted ballasted releasing group (A) selected from aryloxy, thioaryloxy, heterocyclicoxy, and thioheterocyclicoxy releasing groups having attached thereto a phenoxy timing group containing a photographically useful group (PUG), the releasing group capable of intramolecular displacement to release the timing group, the method comprising:(a) providing a coupler moiety (COUP) having the releasing group (A) in a coupling off position, the releasing group (A) having a 2 position containing a carbamyl chloride;(b) reacting the carbamyl chloride with a phenoxy timing group having an amine blocked with a carbamate group, the reacting being carried out in the presence of a base to form a first product;(c) removing the carbamate group using an acid to provide a coupler moiety (COUP) having a releasing group (A) and phenoxy timing group having an amine group; and(d) reacting the amine group to form aType: GrantFiled: June 24, 1992Date of Patent: November 23, 1993Assignee: Eastman Kodak CompanyInventors: William J. Begley, Donald Singleton, Jr.