Paul K Burns

US Patent:

48617016, Aug 29, 1989

Filed:

Oct 5, 1987

Appl. No.:

7/105062

Inventors:

Paul A. Burns - Rochester NY
Terry R. Taber - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 732

US Classification:

430543

Abstract:

Photographic compounds capable of releasing a photographically useful group are more effective in photographic materials when the photographic compounds comprise at least two differing timing groups in sequence between a carrier moiety and the photographically useful group. The two timing groups in sequence enable improved timing and control of release of the photographically useful group.

US Patent:

59725745, Oct 26, 1999

Filed:

Jan 15, 1997

Appl. No.:

8/784171

Inventors:

Susan M. Fischer - Rochester NY
Robert F. Romanet - Rochester NY
Daniel L. Kapp - Rochester NY
Paul A. Burns - Rochester NY
Paul P. Spara - Rochester NY
Rakesh Jain - Penfield NY
William R. Schleigh - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 746

US Classification:

430387

Abstract:

Disclosed is a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by Formula I: ##STR1## wherein R" represents the group ##STR2## in which R. sup. 1, R. sup. 2, and R. sup. 3 independently selected all groups, provided that any two of R. sup. 1, R. sup. 2, and R. sup. 3 may join to form a ring; R. sup. 4 is hydrogen or a substituent, provided that R. sup. 3 and R. sup. 4 may join to form a ring when R. sup. 4 is a substituent; and W is a specified substituent having the formula: ##STR3## and wherein the remaining substituents are as described in the specification. The use of the coupler of Formula I lends improved manufacturability and dye light stability to the element.

US Patent:

55344011, Jul 9, 1996

Filed:

Mar 1, 1995

Appl. No.:

8/396836

Inventors:

J. R. Vargas - Webster NY
John W. Harder - Rochester NY
Phillip D. Knight - Fairport NY
Paul A. Burns - Rochester NY
Lynda D. Weber - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 108
G03C 726
G03C 732

US Classification:

430558

Abstract:

There are described reversal photographic elements containing magenta dye-forming couplers that yield dye images that particularly lend themselves to retouching. The photographic element comprises a pyrazoloazole magenta dye forming coupler having a cleavable ballast group joined to the remainder of the molecule by one or two electrophilic cleavage groups which can be removed with a specialized processing composition after reversal processing.

US Patent:

52926311, Mar 8, 1994

Filed:

Jun 3, 1992

Appl. No.:

7/892851

Inventors:

Stephen A. Hershey - Rochester NY
J. Ramon Vargas - Rochester NY
Paul A. Burns - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 1035
G03C 106

US Classification:

430567

Abstract:

Monocyclic and polycyclic azoles having the following formula enhance the covering power of a developed silver image formed from a radiographic element comprising a radiation sensitive tabular grain silver bromide, silver bromochloride or silver bromoiodide emulsion layer containing grains having a mean equivalent circular diameter of at least 0. 3. mu. m and a grain population wherein at least 50 percent of the total grain population projected area is accounted for by tabular grains having a tabularity of greater than 8, as determined by the relationship: ##EQU1## wherein T is tabularity; ECD is the mean effective circular diameter in. mu. m of the tabular grains; and t is the mean thickness in. mu. m of the tabular grains. The azoles have the formula: ##STR1## wherein Z is --N. dbd. or --C(R. sup. 5). dbd. where R. sup.

US Patent:

50064487, Apr 9, 1991

Filed:

Jun 15, 1989

Appl. No.:

7/366730

Inventors:

Richard P. Szajewski - Rochester NY
Paul A. Burns - Rochester NY
Jerrold N. Poslusny - Rochester NY
Norma B. Platt - Ontario NY
Timothy D. Norden - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 108
G03C 146

US Classification:

430505

Abstract:

A photographic recording material is disclosed which contains a compound capable of releasing a development inhibitor moiety during photographic processing which enhances development inhibition and reduces interlayer interimage effects without adversely affecting photographic properties.

US Patent:

61908495, Feb 20, 2001

Filed:

Jul 21, 1999

Appl. No.:

9/358500

Inventors:

Paul A. Burns - Rochester NY
Louis E. Friedrich - Rochester NY
Stephen P. Singer - Spencerport NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 108
G03C 726
G03C 732

US Classification:

430544

Abstract:

The invention provides a color photographic element comprising: a) a first light sensitive silver halide emulsion layer containing a tetrazole compound of Formula I: ##STR1## wherein when R. sub. 1 is hydrogen, then R. sub. 2 is an alkyl, aryl, alkoxy , aryloxy, alkylthio or arylthio, sulfoxyl, sulfonyl, sulfamoyl, --O--CO--, --O--SO. sub. 2 --, a heterocyclic group, a carbonyl group or an amino group or when R. sub. 2 is a thiol (--SH) group, then R. sub. 1 is an alkyl, aryl or heterocyclic group provided further that the ClogP for the compound of Formula I is at least 2. 0 and less than 7. 8; and b) a second light sensitive silver halide emulsion layer, having a spectral sensitivity different from that of the first light sensitive silver halide emulsion layer, containing a compound of Formula II: COUP--(TIME). sub. j --INH II wherein: 1) COUP is a coupler parent group capable of forming a dye upon reaction with an oxidized developer; 2) TIME is a timing group bonded to the coupling position of COUP and j is 0 or 1; and 3) INH is a mild silver development inhibitor fragment. The invention provides improved color reproduction.

US Patent:

52503992, Oct 5, 1993

Filed:

Jun 28, 1991

Appl. No.:

7/723080

Inventors:

Richard P. Szajewski - Rochester NY
Jerrold N. Poslusny - Rochester NY
David A. Steele - Webster NY
Paul A. Burns - Rochester NY
Ronald E. Leone - Rochester NY
William J. Begley - Webster NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 732

US Classification:

430382

Abstract:

A photographic coupler (A) capable, upon oxidative coupling, of forming a dye that can be washed out of a photographic element containing the coupler upon processing, comprises, in the coupling position, a coupling-off group that comprises, in sequence, a releasable ballasted carbamate timing group and a releasable benzotriazole, triazole or tetrazole development inhibitor group. Such a coupler is useful in photographic silver halide materials and processes to provide improved images.

US Patent:

50213253, Jun 4, 1991

Filed:

Dec 19, 1989

Appl. No.:

7/452997

Inventors:

Paul A. Burns - Rochester NY
John W. Harder - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 738

US Classification:

430387

Abstract:

A pyrazolotriazole dye-forming coupler containing on a carbon atom in a non-coupling position a ballast group derived from and bonded through a carboxylic acid portion of an unsubstituted or substituted amino acid provides useful magenta dye images in a photographic material and process and enables simplification of manufacture of the coupler. Such couplers are useful in photographic silver halide materials and processes.