Patents by Inventor Trevor J. Wear
Trevor J. Wear 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: 8398226Abstract: An inkjet printing system comprising a plurality of static inkjet printing units each comprising at least one inkjet printing head; an ink-receiving element comprising a poorly-absorbing or impermeable substrate; an aqueous inkjet composition which comprises a polymeric compound comprising discrete particles responsive to an external stimulus, and a functional material, which may be incorporated as part of the polymeric particles, the composition having a first rheological state and a different second rheological state in response to a stimulated change in conditions, the first state being associated with a first lower viscosity of the composition, wherein the particles have a first lower volume, and the second state being associated with a second higher viscosity of the composition, wherein the particles have a second higher volume, and of drying the aqueous ink composition only positioned downstream of the plurality of the printing units.Type: GrantFiled: June 3, 2009Date of Patent: March 19, 2013Assignee: Eastman Kodak CompanyInventors: John M. Higgins, Danuta Gibson, Andrew M. Howe, Andrew Clarke, Stephanie V. Desrousseaux, Trevor J. Wear
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Patent number: 8318853Abstract: A thermally-responsive dispersant for an aqueous dispersion of positively- or negatively-charged or chargeable solid or liquid particulates, comprises a compound having an anchoring moiety linked to a thermally-responsive polymeric stabilizing moiety, other than a polyalkylene oxide, the polymeric moiety having a lower affinity for the surface than the anchoring group below the thermal transition temperature, the particulates being positively-charged or chargeable when the anchoring moiety contains an acid and/or hydroxy group and has a net acidity or neutrality and the particulates being negatively-charged or chargeable when the anchoring moiety has a basic group and has a net basicity, wherein the dispersion exhibits a change in sign from negative to positive and an increase in magnitude of a rheological property (viscosity at low shear and/or complex modulus at low amplitude oscillatory shear), on increasing the temperature from below to above the thermal transition temperature.Type: GrantFiled: June 19, 2008Date of Patent: November 27, 2012Assignee: Eastman Kodak CompanyInventors: Andrew M. Howe, Trevor J. Wear, Alan R. Pitt, Ian M. Newington, John H. Hone
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Patent number: 8202926Abstract: The invention provides a dispersant for an aqueous dispersion of negatively charged or chargeable solid particulates which comprises a compound having an anchoring moiety linked to a polymeric hydrophilic moiety, the anchoring moiety containing at least one basic group and having an overall basicity and the polymeric moiety having a lower affinity for the particulate surface than the anchoring moiety. The invention also provides a coating composition containing the dispersant, an inkjet recording element containing the dispersant and methods of coating or reducing viscosity using the dispersant.Type: GrantFiled: December 19, 2006Date of Patent: June 19, 2012Assignee: Eastman Kodak CompanyInventors: Alan R. Pitt, Trevor J. Wear, John H. Hone, Andrew M. Howe, Ian M. Newington
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Patent number: 8153716Abstract: The invention provides a dispersant for an aqueous dispersion of positively charged or chargeable solid particulates which comprises a compound having an anchoring moiety linked to a polymeric hydrophilic moiety, the anchoring moiety containing at least one acid and/or hydroxy group and having an overall acidity or neutrality and the polymeric moiety having a lower affinity for the particulate surface than the anchoring moiety. The anchoring moiety preferably contains at least two acid groups, preferably carboxylic acid groups, attached either in a [1,1], [1,2] or [1,3] relationship and is linked to the polymeric moiety, which is preferably derived from acrylamide or methacrylamide monomer units, preferably by a sulfur atom. The dispersant can reduce the viscosity of an aqueous dispersion of positively charged or chargeable solid particulates and can reduce the tendency of the resulting dispersion to form a gel or a yield stress material.Type: GrantFiled: December 22, 2005Date of Patent: April 10, 2012Assignee: Eastman Kodak CompanyInventors: Alan R. Pitt, Trevor J. Wear, John H. Hone, Andrew M. Howe
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Patent number: 8063132Abstract: The invention provides a coating composition containing boehmite particles and a dispersant which comprises a compound having an anchoring moiety linked to a polymeric hydrophilic moiety, the anchoring moiety containing at least one acid and/or hydroxy group and having overall acidity or neutrality and the polymeric moiety having a lower affinity for a boehmite surface than the anchoring moiety. The anchoring moiety preferably contains at least two acid groups, preferably carboxylic acid groups, attached either in a [1,1], [1,2] or [1,3] relationship and is linked to the polymeric moiety, which is preferably derived from acrylamide or methacrylamide monomer units, preferably by a sulfur atom. The dispersant can reduce the viscosity of the boehmite dispersion and the tendency of the boehmite dispersion to increase in viscosity and/or form a gel or a yield stress material following periods of high shear stress.Type: GrantFiled: December 22, 2005Date of Patent: November 22, 2011Assignee: Eastman Kodak CompanyInventors: Alan R. Pitt, Trevor J. Wear, John H. Hone, Andrew M. Howe
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Publication number: 20100184910Abstract: A thermally-responsive dispersant for an aqueous dispersion of positively- or negatively-charged or chargeable solid or liquid particulate, comprises a compound having an anchoring moiety linked to a thermally-responsive polymeric stabilizing moiety, other than a polyalkylene oxide, the polymeric moiety having a lower affinity for the surface than the anchoring group below the thermal transition temperature, the particulates being positively-charged or chargeable when the anchoring moiety contains an acid and/or hydroxy group and has a net acidity or neutrality and the particulates being negatively-charged or chargeable when the anchoring moiety has a basic group and has a net basicity, wherein the dispersion exhibits a change in sign from negative to positive and an increase in magnitude of a rheological property (viscosity at low shear and/or complex modulus at low amplitude oscillatory shear), on increasing the temperature from below to above the thermal transition temperature.Type: ApplicationFiled: June 19, 2008Publication date: July 22, 2010Inventors: Andrew m. Howe, Trevor J. Wear, Alan R. Pitt, Ian M. Newington, John H. Hone
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Patent number: 7695783Abstract: The invention relates to an image-recording element comprising a support and an image-receiving layer, wherein the image-receiving layer comprises anionic colloidal silica particles, hydrophilic polymeric binder, and fluorosurfactant, wherein the binder is present in an amount of between 2% and 15% weight of the image-receiving layer, the image-recording element has a 60-degree gloss of greater than 25, and a dry time of less than 1 minute.Type: GrantFiled: July 18, 2003Date of Patent: April 13, 2010Assignee: Eastman Kodak CompanyInventors: Paul B. Merkel, Gary N. Barber, Alan R. Pitt, Trevor J. Wear
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Publication number: 20090322811Abstract: An inkjet printing system comprising a plurality of static inkjet printing units each comprising at least one inkjet printing head; an ink-receiving element comprising a poorly-absorbing or impermeable substrate; an aqueous inkjet composition which comprises a polymeric compound comprising discrete particles responsive to an external stimulus, and a functional material, which may be incorporated as part of the polymeric particles, the composition having a first rheological state and a different second rheological state in response to a stimulated change in conditions, the first state being associated with a first lower viscosity of the composition, wherein the particles have a first lower volume, and the second state being associated with a second higher viscosity of the composition, wherein the particles have a second higher volume, and of drying the aqueous ink composition only positioned downstream of the plurality of the printing units.Type: ApplicationFiled: June 3, 2009Publication date: December 31, 2009Inventors: John M. Higgins, Danuta Gibson, Andrew M. Howe, Andrew Clarke, Stephanie V. Desrousseaux, Trevor J. Wear
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Publication number: 20080317960Abstract: The invention provides a dispersant for an aqueous dispersion of negatively charged or chargeable solid particulates which comprises a compound having an anchoring moiety linked to a polymeric hydrophilic moiety, the anchoring moiety containing at least one basic group and having an overall basicity and the polymeric moiety having a lower affinity for the particulate surface than the anchoring moiety. The invention also provides a coating composition containing the dispersant, an inkjet recording element containing the dispersant and methods of coating or reducing viscosity using the dispersant.Type: ApplicationFiled: December 19, 2006Publication date: December 25, 2008Inventors: Alan R. Pitt, Trevor J. Wear, John H. Hone, Andrew M. Howe, Ian M. Newington
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Patent number: 7390844Abstract: The present invention discloses a water dispersible polymer particle stabilized by a hydrophobically capped oligomeric acrylamide dispersant. The present invention also discloses a heterogeneous method for forming polymer particles comprising providing a water immiscible organic phase comprising at least one monomer dispersed in a continuous water phase and a hydrophobically capped oligomeric acrylamide, and polymerizing said organic phase to yield polymer particles stabilized with hydrophobically capped oligomeric acrylamide. Also disclosed in the present invention is a heterogeneous method for forming polymer particles comprising providing a water immiscible organic dispersed in a continuous water phase, polymerizing said organic phase, and adding bydrophobically capped oligomeric acrylamide to yield polymer particles stabilized with hydrophobically capped oligomeric acrylamide.Type: GrantFiled: March 15, 2005Date of Patent: June 24, 2008Assignee: Eastman Kodak CompanyInventors: Jeffrey W. Leon, Jeanne E. Kaeding, Dennis E. Smith, Trevor J. Wear, Alan R. Pitt, Peter J. Ghyzel
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Publication number: 20080145546Abstract: The invention provides a dispersant for an aqueous dispersion of positively charged or chargeable solid particulates which comprises a compound having an anchoring moiety linked to a polymeric hydrophilic moiety, the anchoring moiety containing at least one acid and/or hydroxy group and having an overall acidity or neutrality and the polymeric moiety having a lower affinity for the particulate surface than the anchoring moiety. The anchoring moiety preferably contains at least two acid groups, preferably carboxylic acid groups, attached either in a [1,1], [1,2] or [1,3] relationship and is linked to the polymeric moiety, which is preferably derived from acrylamide or methacrylamide monomer units, preferably by a sulfur atom. The dispersant can reduce the viscosity of an aqueous dispersion of positively charged or chargeable solid particulates and can reduce the tendency of the resulting dispersion to form a gel or a yield stress material.Type: ApplicationFiled: December 22, 2005Publication date: June 19, 2008Inventors: Alan R. Pitt, Trevor J. Wear, John H. Hone, Andrew M. Howe
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Patent number: 7108964Abstract: The invention relates to a novel kind of anthranilic acid compound that releases a UG as a function of chemical bond cleavage according to Formula (I): Q-(AAS)-UG where UG is an useful group and is chemically bonded to (AAS); (AAS) is an anthranilic acid switching group; and Q is a group in which the bond to (AAS) is broken so that the -(AAS)-UG fragment subsequently decomposes to the free UG.Type: GrantFiled: August 5, 2005Date of Patent: September 19, 2006Assignee: Eastman Kodak CompanyInventors: Stephen P. Singer, Philip A. Allway, Trevor J. Wear, Louis E. Friedrich, Siu (Lambert) C. Tsoi, Bernard A. Clark, Paul L. Stanley
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Patent number: 7059714Abstract: The present invention discloses an ink printing method including the steps of: a) providing an ink printer that is responsive to digital data signals; b) loading said printer with an image-recording element including a support having thereon at least one image-receiving layer comprising polymeric particles in a polymeric binder, wherein said polymeric particle is stabilized by a hydrophobically capped oligomeric acrylamide dispersant; c) loading said printer with an ink composition; and d) printing on said image-recording element using said ink composition in response to said digital data signals.Type: GrantFiled: April 9, 2002Date of Patent: June 13, 2006Assignee: Eastman Kodak CompanyInventors: Jeanne E. Kaeding, Jeffrey W. Leon, Christine J. Landry-Coltrain, Alan R. Pitt, Trevor J. Wear, Gregory E. Missell, Dennis E. Smith
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Patent number: 6906157Abstract: A water dispersible polymer particle stabilized by a hydrophobically capped oligomeric acrylamide dispersant or a heterogeneous method for forming polymer particles comprising providing a water immiscible organic phase comprising at least one monomer dispersed in a continuous water phase and a hydrophobically capped oligomeric acrylamide, and polymerizing the organic phase to yield polymer particles stabilized with hydrophobically capped oligomeric acrylamide. Also, a heterogeneous method for forming polymer particles comprising providing a water immiscible organic dispersed in a continuous water phase, polymerizing the organic phase, and adding hydrophobically capped oligomeric acrylamide to yield polymer particles stabilized with hydrophobically capped oligomeric acrylamide.Type: GrantFiled: April 9, 2002Date of Patent: June 14, 2005Assignee: Eastman Kodak CompanyInventors: Jeffrey W. Leon, Jeanne E. Keading, Dennis E. Smith, Trevor J. Wear, Alan R. Pitt, Peter J. Ghyzel
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Patent number: 6866902Abstract: An ink recording element is described comprising a support having thereon at least one image-receiving layer comprising polymeric particles in a polymeric binder, wherein the polymeric particle is stabilized by a hydrophobically-capped oligomeric acrylamide dispersant.Type: GrantFiled: April 9, 2002Date of Patent: March 15, 2005Assignee: Eastman Kodak CompanyInventors: Jeanne E. Kaeding, Jeffrey W. Leon, Christine J. Landry-Coltrain, Alan R. Pitt, Trevor J. Wear, Gregory E. Missell, Dennis E. Smth
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Patent number: 6638708Abstract: The present disclosure relates to dispersions of silver (carboxylate-n-alkyl thiolate). The carboxylates are typically silver salts of long chain fatty acids and the n-alkyl thiolate is preferably 1-dodecanethiol. These silver (carboxylate-n-alkyl thiolate) particles can be used to formulate imaging forming compositions that are useful in aqueous thermographic or photothermographic imaging elements.Type: GrantFiled: July 22, 2002Date of Patent: October 28, 2003Assignee: Eastman Kodak CompanyInventors: Peter J. Ghyzel, Mark Lelental, David A. Dickinson, Alan R. Pitt, Trevor J. Wear
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Publication number: 20030199633Abstract: The present invention discloses a water dispersible polymer particle stabilized by a hydrophobically capped oligomeric acrylamide dispersant. The present invention also discloses a heterogeneous method for forming polymer particles comprising providing a water immiscible organic phase comprising at least one monomer dispersed in a continuous water phase and a hydrophobically capped oligomeric acrylamide, and polymerizing said organic phase to yield polymer particles stabilized with hydrophobically capped oligomeric acrylamide. Also disclosed in the present invention is a heterogeneous method for forming polymer particles comprising providing a water immiscible organic dispersed in a continuous water phase, polymerizing said organic phase, and adding hydrophobically capped oligomeric acrylamide to yield polymer particles stabilized with hydrophobically capped oligomeric acrylamide.Type: ApplicationFiled: April 9, 2002Publication date: October 23, 2003Applicant: Eastman Kodak CompanyInventors: Jeffrey W. Leon, Jeanne E. Kaeding, Dennis E. Smith, Trevor J. Wear, Alan R. Pitt, Peter J. Ghyzel
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Publication number: 20030197773Abstract: The present invention discloses an ink printing method using an image-recording element which provides an image having excellent image quality and superior dry time comprising the steps of:Type: ApplicationFiled: April 9, 2002Publication date: October 23, 2003Applicant: Eastman Kodak CompanyInventors: Jeanne E. Kaeding, Jeffrey W. Leon, Christine J. Landry-Coltrain, Alan R. Pitt, Trevor J. Wear, Gregory E. Missell, Dennis E. Smith
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Publication number: 20030198761Abstract: An ink recording element is described comprising a support having thereon at least one image-receiving layer comprising polymeric particles in a polymeric binder, wherein said polymeric particle is stabilized by a hydrophobically-capped oligomeric acrylamide dispersant.Type: ApplicationFiled: April 9, 2002Publication date: October 23, 2003Applicant: Eastman Kodak CompanyInventors: Jeanne E. Kaeding, Jeffrey W. Leon, Christine J. Landry-Coltrain, Alan R. Pitt, Trevor J. Wear, Gregory E. Missell, Dennis E. Smith
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Patent number: 6520086Abstract: A method for the preparation of a lithographic printing plate comprises forming an oleophilic image on the surface of a hydrophilic support by depositing, preferably by ink-jetting, the image on the surface using an aqueous dispersion of an oligomer having in the molecule both hydrophilic and hydrophobic groups. The number of repeating units in the oligomer may be from 2 to 10 and the number of hydrophilic groups in the oligomer may also be from 2 to 10. Preferably the molecular weight of the oligomer is from about 500 to about 5000.Type: GrantFiled: May 24, 2001Date of Patent: February 18, 2003Assignee: Eastman Kodak CompanyInventors: Ian M. Newington, Trevor J. Wear