Patents by Inventor David G. Lincoln
David G. Lincoln 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: 6787294Abstract: Disclosed is a photographic element comprising a light sensitive silver halide emulsion layer and, having associated with that layer, a 1H-pyrazo[1,5-b]-1,2,4-triazole dye forming coupler having a fully substituted carbon atom at the 6-position, a chloro group at the 7-position, and, at the 2-position, a propionic ester moiety.Type: GrantFiled: June 24, 2003Date of Patent: September 7, 2004Assignee: Eastman Kodak CompanyInventors: Robert F. Romanet, Susan M. Fischer, David G. Lincoln, Gary M. Russo
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Patent number: 6638701Abstract: Disclosed is a photographic element comprising a a light sensitive silver halide emulsion layer having associated therewith a pyrazolotriazole dye forming coupler having formula I in which is and L1 is linked to the C atom; L1 is a carbon atom of the triazole ring, substituted by one or two alkyl or aryl groups; L2 is a chain of one or two carbon atoms that may be further substituted by alkyl or aryl groups; R1 is selected from the group consisting of alkyl groups containing 1-3 carbon atoms; R2 is selected from the group consisting of hydrogen, alkyl and aryl groups; R3 is a substituted carbonyl, carbamoyl, sulfonyl, or sulfamoyl group; and X is H or a coupling-off group. Such an element provides a red dye forming coupler of improved stability.Type: GrantFiled: December 17, 2002Date of Patent: October 28, 2003Assignee: Eastman Kodak CompanyInventors: Mbiya Kapiamba, David G. Lincoln, James L. Edwards, Gary M. Russo, Gregg P. Bryant
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Patent number: 6521397Abstract: Disclosed is a photographic element comprising a support bearing a light sensitive silver halide emulsion layer having associated therewith a dye forming coupler having a formula I, wherein: Ballast is a group containing at least 6 aliphatic carbon atoms, V represents a chain of three or four atoms, which may be substituted, selected from C, N, O and S sufficient to form an aromatic ring fused to the azole ring and n is 0 or 1, provided that if n is 0, Y and Ballast are directly attached to the 5-membered azole ring, W is an electron withdrawing group selected from the group consisting of —CN, —CONR1R2, —CO2R1, —NO2, and —SO2R1 where R1 and R2 are H or substituents; X is H or a coupling-off group; Y is H or a substituent; Z is an atom or group selected from >N—R, —O—, and —S—.Type: GrantFiled: April 12, 2002Date of Patent: February 18, 2003Assignee: Eastman Kodak CompanyInventors: Mbiya Kapiamba, Donald R. Diehl, James L. Edwards, David G. Lincoln, Gary M. Russo
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Patent number: 6291152Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a bicyclic azole dye-forming coupler, having appended to a ring carbon at a non-coupling position thereof a substituent group represented by the formula: wherein the arrow represents the point of attachment of the substituent group to a non-coupling position of the coupler; R1, R2, R3 and R4 are independently selected hydrogen or substituent groups, provided that any two of R1, R2, R3 and R4 may join to form a ring; Ra and Rb are independently hydrogen or a substituent; each Rc and Rd is an independently selected hydrogen or an alkyl or aryl group, provided that any two of them may join to form a ring and n is 1 to 10; Re is hydrogen or an alkyl or aryl group; each Y is an independently selected substituent group and m is from 0 to 4; and Z is a substituent selected from the group consisting of —C(O)R5, —S(O)2R5, —SOR5, —P(═O)(R6)2 and &Type: GrantFiled: November 7, 2000Date of Patent: September 18, 2001Assignee: Eastman Kodak CompanyInventors: Paul A. Burns, Robert F. Romanet, Susan M. Fischer, David G. Lincoln, Paul P. Spara
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Patent number: 5985533Abstract: The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula II: whereinX is hydrogen or a coupling-off group;R.sup.1, R.sup.2, and R.sup.3 are independently selected alkyl 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;R.sup.a is hydrogen or a substituent;Y is a substituent with at least one Y substituent having a formula selected from the group consisting of --CONR.sup.b R.sup.c, --NHCOR.sup.d, and --SO.sub.2 R.sup.e, wherein R.sup.b, R.sup.c, and R.sup.d are independently selected from the group consisting of H, alkyl, aryl, and heterocyclic groups and R.sup.e is selected from the group consisting of an alkyl group, an aryl group, a heterocyclic group, --NR.sup.g R.sup.h, and --OR.sup.i wherein R.sup.g, R.sup.h, and R.sup.Type: GrantFiled: February 16, 1998Date of Patent: November 16, 1999Assignee: Eastman Kodak CompanyInventors: Robert F. Romanet, Paul A. Burns, Susan M. Fischer, Paul P. Spara, Rajiv P. Balasubramanian, David G. Lincoln, Daniel L. Kapp
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Patent number: 5972587Abstract: The invention provides a photographic element comprising a silver halide emulsion layer having associated therewith a dye-forming coupler represented by formula II: ##STR1## wherein X is hydrogen or a coupling-off group;R.sup.1, R.sup.2, and R.sup.3 are independently selected alkyl 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;R.sup.a is hydrogen or a substituent;each Y is an independently selected substituent with at least one Y substituent in the 2-position (relative to oxygen) having the formula --NHSO.sub.2 R.sup.f, wherein R.sup.f is an alkyl or aryl group, and n is from 1 to 5.The element exhibits improved magenta dye light stability.Type: GrantFiled: February 16, 1998Date of Patent: October 26, 1999Assignee: Eastman Kodak CompanyInventors: Robert F. Romanet, Paul A. Burns, Susan M. Fischer, Paul P. Spara, Rajiv P. Balasubramanian, David G. Lincoln
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Patent number: 5624397Abstract: The catheter is formed by a housing having a size and shape which fits readily into the hand of the user. An elongate tube is connected to and extends from the housing. The elongate tube is formed from a flexible polymeric material and constructed of three portions, a proximal portion, a medial portion, and a distal portion. Each of the portions is coaxial with one another and the longitudinal axis of the catheter housing. In addition, each of the portions has substantially the same outer circumference. The proximal and distal portions are formed of a flexible polymeric material which has a higher durometer of hardness than that of the medial portion. A pair of control wires extend longitudinally through the proximal, medial, and distal portions and parallel to the axis of the coaxial portions for selectively bending the portions in response to movement of the control wires.Type: GrantFiled: September 19, 1994Date of Patent: April 29, 1997Inventors: Phillip J. Snoke, David S. Rowley, David G. Lincoln, Kirk W. Charles
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Patent number: 5542924Abstract: The catheter has a housing of such a size as to be readily held in the hand of the user, and a tubular proximal portion connected to and extending from the housing. The proximal portion is formed of a flexible polymeric material. The distal portion is coaxial with and is adjacent to the proximal portion. The distal portion is also formed of a flexible polymeric material and it has substantially the same outer circumference as the proximal portion. The distal portion is more flexible than the medial portion. A pair of control wires extend longitudinally through the proximal and distal portions and parallel to the axis of the coaxial portions for bending the flexible portions in response to movement of the control wires. A control is carried by the housing for controlling the movement of the control wires to thereby bend the flexible portions and remotely manipulate the catheter within a human body.Type: GrantFiled: January 13, 1995Date of Patent: August 6, 1996Assignee: Catheter Imaging SystemsInventors: Phillip J. Snoke, David S. Rowley, David G. Lincoln, Kirk W. Charles
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Patent number: 5531687Abstract: A catheter for use in body vessels or cavities has a housing of such size as to be readily held in the hand of a user and elongate tube means having one end connected to the housing and extending outwardly therefrom and being formed of material of such a stiffness so as to maintain the elongate tube means in straight condition in the absence of an external force applied thereto, an outer end portion of the elongate tube means being flexible. Guide wires are connected to the housing by the inner ends thereof and extend outwardly therefrom through the elongate tube means. The outer ends of the guide wires are connected to the flexible outer end portion of the elongate tube means. Guide wire control means is carried by the housing and cooperates with the inner end portions of the guide wires for controlling the angular attitude of the flexible outer end portion of the elongate tube means.Type: GrantFiled: December 30, 1994Date of Patent: July 2, 1996Assignee: Catheter Imaging SystemsInventors: Phillip J. Snoke, David S. Rowley, David G. Lincoln, Kirk W. Charles
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Patent number: 5437636Abstract: A catheter for use in body vessels or cavities has a housing of such size as to be readily held in the hand of a user and elongate tube means having one end connected to the housing and extending outwardly therefrom and being formed of material of such a stiffness so as to maintain the elongate tube means in straight condition in the absence of an external force applied thereto, an outer end portion of the elongate tube means being flexible. Guide wires are connected to the housing by the inner ends thereof and extend outwardly therefrom through the elongate tube means. The outer ends of the guide wires are connected to the flexible outer end portion of the elongate tube means. Guide wire control means is carried by the housing and cooperates with the inner end portions of the guide wires for controlling the angular attitude of the flexible outer end portion of the elongate tube means.Type: GrantFiled: July 22, 1994Date of Patent: August 1, 1995Assignee: Catheter Imaging SystemsInventors: Phillip J. Snoke, David S. Rowley, David G. Lincoln, Kirk W. Charles
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Patent number: 5399164Abstract: The catheter has a housing of such a size as to be readily held in the hand of the user, and a tubular proximal portion connected to and extending from the housing. The proximal portion is formed of a flexible polymeric material. The distal portion is coaxial with and is adjacent to the proximal portion. The distal portion is also formed of a flexible polymeric material and it has substantially the same outer circumference as the proximal portion. The distal portion is more flexible than the medial portion. A pair of control wires extend longitudinally through the proximal and distal portions and parallel to the axis of the coaxial portions for bending the flexible portions in response to movement of the control wires. A control is carried by the housing for controlling the movement of the control wires to thereby bend the flexible portions and remotely manipulate the catheter within a human body.Type: GrantFiled: November 2, 1992Date of Patent: March 21, 1995Assignee: Catheter Imaging SystemsInventors: Phillip J. Snoke, David S. Rowley, David G. Lincoln, Kirk W. Charles
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Patent number: 5342299Abstract: A catheter for use in body vessels or cavities has a housing of such size as to be readily held in the hand of a user and elongate tube means having one end connected to the housing and extending outwardly therefrom and being formed of material of such a stiffness so as to maintain the elongate tube means in straight condition in the absence of an external force applied thereto, an outer end portion of the elongate tube means being flexible. Guide wires are connected to the housing by the inner ends thereof and extend outwardly therefrom through the elongate tube means. The outer ends of the guide wires are connected to the flexible outer end portion of the elongate tube means. Guide wire control means is carried by the housing and cooperates with the inner end portions of the guide wires for controlling the angular attitude of the flexible outer end portion of the elongate tube means.Type: GrantFiled: July 6, 1992Date of Patent: August 30, 1994Assignee: Catheter Imaging SystemsInventors: Phillip J. Snoke, David S. Rowley, David G. Lincoln, Kirk W. Charles
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Patent number: 5191080Abstract: A multi-step process for the preparation of tetraazaindenes provides new, intermediate compounds and methods for their formation. A first method or step (1) of the process comprises reacting Meldrum's acid (cyclic dimethylmethylene malonate) or a related compound with an orthoester to form a first intermediate. Another method or step (2) of the invention comprises reacting the first intermediate with a triazole to form a second intermediate. A third method or step (3) comprises reacting the second intermediate with a base to form a tetraazaindene salt from which the tetraazaindene can then be formed. Other methods of the invention comprise sequential combinations of the three new methods above described.Type: GrantFiled: January 21, 1992Date of Patent: March 2, 1993Assignee: Eastman Kodak CompanyInventors: David G. Lincoln, Mark J. Robbins
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Patent number: 5103016Abstract: A multi-step process for the preparation of tetraazaindenes provides new, intermediate compounds and methods for their formation. A first method or step (1) of the process comprises reacting Meldrum's acid (cyclic dimethylmethylene malonate) or a related compound with an orthoester to form a first intermediate. Another method or step (2) of the invention comprises reacting the first intermediate with a triazole to form a second intermediate. A third method or step (3) comprises reacting the second intermediate with a base to form a tetraazaindene salt from which the tetraazaindene can then be formed. Other methods of the invention comprise sequential combinations of the three new methods above described.Type: GrantFiled: April 1, 1991Date of Patent: April 7, 1992Assignee: Eastman Kodak CompanyInventors: David G. Lincoln, Mark J. Robbins
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Patent number: 5061799Abstract: A multi-step process for the preparation of tetraazaindenes provides new, intermediate compounds and methods for their formation. A first method or step (1) of the process comprises reacting Meldrum's acid (cyclic dimethylmethylene malonate) or a related compound with an orthoester to form a first intermediate. Another method or step (2) of the invention comprises reacting the first intermediate with a triazole to form a second intermediate. A third method or step (3) comprises reacting the second intermediate with a base to form a tetraazaindene salt from which the tetraazaindene can then be formed. Other methods of the invention comprise sequential combinations of the three new methods above described.Type: GrantFiled: June 25, 1990Date of Patent: October 29, 1991Assignee: Eastman Kodak CompanyInventors: David G. Lincoln, Mark J. Robbins
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Patent number: D343678Type: GrantFiled: June 19, 1992Date of Patent: January 25, 1994Assignee: Catheter Imaging SystemsInventors: Phillip J. Snoke, David S. Rowley, David G. Lincoln