Patents by Inventor Fatima M. Pontes
Fatima M. Pontes 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: 5932630Abstract: A hot melt ink composition comprised of a triblock copolymer vehicle, and a dye or pigment.Type: GrantFiled: May 2, 1996Date of Patent: August 3, 1999Assignee: Xerox CorporationInventors: Gregory J. Kovacs, Michael K. Georges, Fatima M. Pontes, Stephan V. Drappel
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Patent number: 5817169Abstract: An ink composition comprised of a colorant and a vehicle component, and which vehicle component is comprised of the condensation product of an organic acid and an amino alcohol.Type: GrantFiled: October 31, 1997Date of Patent: October 6, 1998Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Stephan V. Drappel, Daniele C. Boils-Boissier, Fatima M. Pontes
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Patent number: 5760124Abstract: An aqueous ink jet ink composition comprising pigment, water, and an (A.sub.n -B.sub.m) block copolymer wherein n represents the degree of polymerization of A and m represents the degree of polymerization of B, wherein A is styrene, and B is acrylic acid.Type: GrantFiled: June 17, 1996Date of Patent: June 2, 1998Assignee: Xerox CorporationInventors: Nancy A. Listigovers, Fatima M. Pontes, Marcel P. Breton, Gordon K. Hamer
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Patent number: 5747554Abstract: An ink composition comprised of a polyesterified-dye (I) or polyurethane-dye (II) with a viscosity of from about 3 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 165.degree. C. and represented by the formulas ##STR1## wherein A is an organic chromophore, Y is an oxyalkylene or poly(oxyalkylene), R is an arylene or alkylene, n represents the number of repeating segments, and is an integer of from about 2 to about 50, and p represents the number of chains per chromophore and is an integer of from about 1 to about 6.Type: GrantFiled: March 29, 1996Date of Patent: May 5, 1998Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Pontes, Stephan V. Drappel, Daniel A. Foucher, Marcel P. Breton
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Patent number: 5700316Abstract: An ink composition comprised of a colorant and a vehicle of a poly(alkylene oxide)-alkylate (I), a poly(alkylene oxide)-dialkylate (II), a polyoxa-alkanoate ester (III), or a polyoxa-alkanedioate diester (IV), and which ink possesses a viscosity of from about 1 centipoise to about 15 centipoise at a temperature of from about 125.degree. C. to about 165.degree. C., and which vehicle is of the formulas ##STR1## wherein R is alkyl, R' is an alkylene, or arylene, and n is an integer of from about 2 to about 20.Type: GrantFiled: March 29, 1996Date of Patent: December 23, 1997Assignee: Xerox CorporationInventors: Fatima M. Pontes, Guerino G. Sacripante, Stephan V. Drappel, Anthony J. Paine, Gregory J. Kovacs
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Patent number: 5698017Abstract: An ink composition comprised of a colorant and a vehicle component, and which vehicle component is comprised of the condensation product of an organic acid and an amino alcohol.Type: GrantFiled: September 27, 1996Date of Patent: December 16, 1997Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Stephan V. Drappel, Daniele C. Boils-Boissier, Fatima M. Pontes
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Patent number: 5688312Abstract: An ink composition comprised of a colorant and an imide or bisimide with a viscosity of from about 1 centipoise to about 10 centipoise at a temperature of from about 125.degree. C. to about 180.degree. C., and which imide or bisimide is of the Formulas I or II, respectively: ##STR1## wherein R is a hydrocarbon of from about 2 to about 50 carbon atoms; R' is an alkylene hydrocarbon or a polyalkyleneoxide, each with from about 2 to about 30 carbon atoms; and X is an arylene of from 6 to about 24 carbon atoms, or an alkylene of from about 2 to about 10 carbon atoms.Type: GrantFiled: March 29, 1996Date of Patent: November 18, 1997Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Pontes, Stephan V. Drappel, Gregory J. Kovacs, Anthony J. Paine
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Patent number: 5667568Abstract: An ink composition comprised of a colorant and a bisamide with a viscosity of from about 1 centipoise to about 20 centipoise at a temperature of from about 125.degree. C. to about 185.degree. C., and which bisamide is of the formula ##STR1## wherein R is an alkyl of from about 2 to about 30 carbon atoms or aryl; R' is an alkylene with from about 2 to about 30 carbon atoms, or R' is a polyalkyleneoxide with from about 2 to about 30 carbon atoms.Type: GrantFiled: March 29, 1996Date of Patent: September 16, 1997Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Fatima M. Pontes, Stephan V. Drappel, Anthony J. Paine, Gregory J. Kovacs
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Patent number: 5462828Abstract: A toner composition includes a styrene/n-butyl acrylate copolymer resin having a number average molecular weight of less than about 5,000, a weight average molecular weight of from about 10,000 to about 40,000 and a molecular weight distribution of greater than 6 and provides excellent gloss and high fix properties at a low fusing temperature.Type: GrantFiled: June 22, 1994Date of Patent: October 31, 1995Assignee: Xerox CorporationInventors: Karen A. Moffat, Fatima M. Pontes, Anthony J. Paine, Brian McAneney, Paul Puri
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Patent number: 5444140Abstract: Simultaneous control of the molecular weight and the molecular weight distribution in the production of toner resins can be accomplished by using a starve fed emulsion polymerization process, which includes: selecting a desired molecular weight and molecular weight distribution of the polymer resin; determining a starve fed fraction to achieve the desired molecular weight and molecular weight distribution; and charging a reaction vessel with a chain transfer agent and a first monomer emulsion, and polymerizing monomer in the first monomer emulsion while simultaneously adding to the reaction vessel additional monomer, in the form of a second monomer emulsion, and additional chain transfer agent. The resins thus produced may be used in dry toners, liquid developers and inks suitable, for example, for ink jet applications.Type: GrantFiled: June 22, 1994Date of Patent: August 22, 1995Assignee: Xerox CorporationInventors: Anthony J. Paine, Fatima M. Pontes, Karen A. Moffat
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Patent number: 5156675Abstract: Fast drying ink compositions contain a colorant, a dye, water and a cosolvent. Some of the ink compositions dry in less than about 1 second and have a viscosity of between about 1.6 and about 2.5 centipoise and a specified surface tension. Some of the ink compositions contain specified cosolvents, preferably a mixture of diethylene glycol monobutyl ether and glycerol.Type: GrantFiled: May 16, 1991Date of Patent: October 20, 1992Assignee: Xerox CorporationInventors: Marcel P. Breton, Fatima M. Pontes, Kerstin M. Henseleit, Barbel Helbrecht, Melvin D. Croucher, Raymond W. Wong
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Patent number: 5129948Abstract: An ink composition, preferably for ink jet printing, contains a liquid carrier, a colorant, and a polyalkyleneimine/alkylene oxide block copolymer, preferably polyethyleneimine/propylene oxide/ethylene oxide block copolymer, and/or a primary or secondary polyoxyalkylene amine.Type: GrantFiled: May 16, 1991Date of Patent: July 14, 1992Assignee: Xerox CorporationInventors: Marcel P. Breton, Melvin D. Croucher, Kerstin M. Henseleit, Barbel Helbrecht, Fatima M. Pontes
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Patent number: 5100469Abstract: An ink composition which is especially useful for ink jet printing contains a colorant, a liquid carrier and at least one additive selected from the group consisting of meso-erythritol, RC(CH.sub.2 OH).sub.3 and salts thereof, wherein R is a member selected from the group consisting of NH.sub.2 and alkyl.Type: GrantFiled: May 16, 1991Date of Patent: March 31, 1992Assignee: Xerox CorporationInventors: Fatima M. Pontes, Marcel P. Breton, Raymond W. Wong, Kerstin Henseleit, Melvin D. Croucher