Patents by Inventor Mark E. Wagman
Mark E. Wagman 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: 9296245Abstract: The invention pertains to a printing form and a process for preparing the printing form from a solvent-free curable composition that includes, in prescribed relative amounts, an epoxy novolac resin; a bisphenol-A epoxy resin or a bisphenol-F epoxy resin; a monofunctional reactive diluent; a multifunctional reactive diluent; and a stoichiometric amount of an amine curing agent. The ratio of the epoxy novolac resin to the bisphenol epoxy resin is 1:3 to 3:1 by weight. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer at one or more temperatures in a temperature range, and engraving to form at least one cell in the cured layer. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.Type: GrantFiled: June 25, 2015Date of Patent: March 29, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Mark E. Wagman, Helen S. M. Lu
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Publication number: 20150290961Abstract: The invention pertains to a printing form and a process for preparing the printing form from a solvent-free curable composition that includes, in prescribed relative amounts, an epoxy novolac resin; a bisphenol-A epoxy resin or a bisphenol-F epoxy resin; a monofunctional reactive diluent; a multifunctional o reactive diluent; and a stoichiometric amount of an amine curing agent. The ratio of the epoxy novolac resin to the bisphenol epoxy resin is 1:3 to 3:1 by weight. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer at one or more temperatures in a temperature range, and engraving to form at least one cell in the cured layer. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.Type: ApplicationFiled: June 25, 2015Publication date: October 15, 2015Inventors: MARK E. WAGMAN, HELEN S.M. LU
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Patent number: 9096759Abstract: The invention pertains to a printing form and a process for preparing the printing form from a solvent-free curable composition that includes, in prescribed relative amounts, an epoxy novolac resin; a bisphenol-A epoxy resin or a bisphenol-F epoxy resin; a monofunctional reactive diluent; a multifunctional reactive diluent; and a stoichiometric amount of an amine curing agent. The ratio of the epoxy novolac resin to the bisphenol epoxy resin is 1:3 to 3:1 by weight. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer at one or more temperatures in a temperature range, and engraving to form at least one cell in the cured layer. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.Type: GrantFiled: December 18, 2012Date of Patent: August 4, 2015Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Mark E Wagman, Helen S M Lu
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Patent number: 8951989Abstract: A hydrogel tissue adhesive having decreased degradation time is described. The hydrogel tissue adhesive is formed by reacting an oxidized polysaccharide with a water-dispersible, multi-arm polyether amine in the presence of an oligomer additive, which promotes the degradation of the hydrogel. The hydrogel may be useful as a tissue adhesive or sealant for medical applications, such as a hemostat sealant or to prevent undesired tissue-to-tissue adhesions resulting from trauma or surgery.Type: GrantFiled: April 9, 2010Date of Patent: February 10, 2015Assignee: Actamax Surgical Materials, LLCInventor: Mark E. Wagman
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Publication number: 20140251168Abstract: The invention pertains to a printing form and a process for preparing the printing form from a curable composition that includes an epoxy resin, less than a stoichiometric amount of at least one amine curing agent, and optionally a catalytic curing agent and/or a latent curing agent. The process includes applying the curable composition to a supporting substrate to form a layer, partially curing the layer at a first temperature, engraving the partially cured layer, and then completing the curing by heating at a second temperature greater than the first temperature. The less than stoichiometric amount of the amine curing agent guarantees that after the first curing step, epoxy functionalities in the curable composition will be available for second curing step. The optional catalytic curing agent or latent curing agent promotes completion of the cure at higher temperature.Type: ApplicationFiled: March 5, 2014Publication date: September 11, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Helen S. M. LU, Mark E. WAGMAN
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Publication number: 20120285930Abstract: The invention pertains to a printing form and a process for preparing the printing form from a curable composition that includes an epoxy novolac resin having an epoxide equivalent weight of 156 to 300 g/equivalent, and an amine curing agent selected from primary amines and secondary amines, the agent having an amine equivalent weight of less than or equal to 60 g/equivalent. The process includes applying the curable composition to a supporting substrate to form a layer, curing the layer at one or more temperatures in a temperature range, and engraving to form at least one cell in the cured layer. The process prepares printing forms, particularly gravure printing forms, having a cured resin composition layer that is engravable, resistant to solvent inks and to mechanical wear, and capable of printing gravure-quality images.Type: ApplicationFiled: May 11, 2012Publication date: November 15, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Douglas J. Adelman, Cara L. Blankenbicker, Andrew P. Davis, Barbara B. Fones, Helen S. M. Lu, Mark E. Wagman
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Publication number: 20120094955Abstract: A method of dissolving an oxidized polysaccharide in an aqueous solution using an oligomer additive is described. The resulting aqueous solution of the oxidized polysaccharide may be used in combination with an aqueous solution comprising an amine-containing component to prepare hydrogel tissue adhesives and sealants for medical and veterinary applications, such as wound closure, supplementing or replacing sutures or staples in internal surgical procedures such as intestinal anastomosis and vascular anastomosis, tissue repair, ophthalmic procedures, drug delivery, and to prevent post-surgical adhesions.Type: ApplicationFiled: April 9, 2010Publication date: April 19, 2012Applicant: ACTAMAX SURGICAL MATERIALS LLCInventor: Mark E. Wagman
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Publication number: 20120035129Abstract: A hydrogel tissue adhesive having decreased degradation time is described. The hydrogel tissue adhesive is formed by reacting an oxidized polysaccharide with a water-dispersible, multi-arm polyether amine in the presence of an oligomer additive, which promotes the degradation of the hydrogel. The hydrogel may be useful as a tissue adhesive or sealant for medical applications, such as a hemostat sealant or to prevent undesired tissue-to-tissue adhesions resulting from trauma or surgery.Type: ApplicationFiled: April 9, 2010Publication date: February 9, 2012Applicant: ACTAMAX SURGICAL MATERIALS LLCInventor: Mark E. Wagman
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Patent number: 7803873Abstract: A solution grafting method for making polyolefin graft polymers by grafting a phenolic ester monomeric compound on olefinic polymers in the presence of a radical initiator in an organic solvent is described. The grafted polymers provide improved adhesion properties, particularly to metal and polyester substrates.Type: GrantFiled: May 23, 2005Date of Patent: September 28, 2010Assignee: E. I. du Pont de Nemours and CompanyInventor: Mark E. Wagman
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Publication number: 20100160960Abstract: A hydrogel tissue adhesive having increased degradation time is described. The hydrogel tissue adhesive is formed by reacting an oxidized polysaccharide with a water-dispersible, multi-arm amine in the presence of a polyol additive, which retards the degradation of the hydrogel. The hydrogel may be useful as a tissue adhesive or sealant for medical applications, including but not limited to, ophthalmic applications such as sealing wounds resulting from trauma such as corneal lacerations, or from surgical procedures such as vitrectomy procedures, cataract surgery, LASIK surgery, glaucoma surgery, and corneal transplants; neurosurgery applications, such as sealing the dura; as a plug to seal a fistula or the punctum; adhesion prevention to prevent undesired tissue to tissue adhesions resulting from trauma or surgery; and as a hemostat sealant.Type: ApplicationFiled: November 9, 2009Publication date: June 24, 2010Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: Mark E. Wagman, Kai Qi, Keith Kunitsky, Hing Wan Yim
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Patent number: 7534837Abstract: The invention discloses a composition consisting essentially of an E/X/M random copolymer wherein X is from 0.1 to 20 mol % of the E/X/M copolymer and is a 4-vinylphenyl ester, preferably 4-acetoxystyrene; M is from 0 to 40 mol % of the E/X/M copolymer and is one or more ethylenically unsaturated monomers; and E is ethylene. The invention further encompasses a high pressure radical polymerization process for providing the novel polymers; and a base catalyzed transesterification process for conversion of the E/X/M copolymer to an E/Y/M copolymer wherein Y is derived from 4-hydroxystyrene. Another embodiment of the invention is a composition consisting essentially of an E/Y/M random copolymer wherein Y is greater than 1.0 to about 20 mol % of the E/Y/M copolymer and is 4-hydroxystyrene; M is from 0 to 40 mol % of the E/Y/M copolymer and is one or more ethylenically unsaturated monomers; and E is ethylene.Type: GrantFiled: September 26, 2005Date of Patent: May 19, 2009Assignee: E.I. du Pont de Nemours and CompanyInventors: Michael Thomas Sheehan, Mark E. Wagman
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Patent number: 7468415Abstract: It was found that glycidyloxystyrenes, including glycidyloxystyrene and substituted glycidyloxystyrene, can be synthesized from hydroxycinnamic acid or substituted hydroxycinnamic acids in a one-pot, two-step process. The substrate can be thermally decarboxylated and then without purification, reacted in the presence of a halomethyl-oxirane and a base. The resulting product can be polymerized or coppolymerized to a fully substituted product.Type: GrantFiled: December 20, 2007Date of Patent: December 23, 2008Assignee: E. I. du Pont de Nemours and CompanyInventors: Keith Kunitsky, Mukesh C. Shah, Steven W. Shuey, Mark E. Wagman
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Publication number: 20080167433Abstract: It was found that glycidyloxystyrenes, including glycidyloxystyrene and substituted glycidyloxystyrene, can be synthesized from hydroxycinnamic acid or substituted hydroxycinnamic acids in a one-pot, two-step process. The substrate can be thermally decarboxylated and then without purification, reacted in the presence of a halomethyl-oxirane and a base. The resulting product can be polymerized or coppolymerized to a fully substituted product.Type: ApplicationFiled: December 20, 2007Publication date: July 10, 2008Inventors: KEITH KUNITSKY, Mukesh C. Shah, Steven W. Shuey, Mark E. Wagman
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Patent number: 7199272Abstract: A method for preparing p-(2-hydroxyalkyloxy)styrene monomers and oligomers is described. The method comprises a base-catalyzed reaction of a styrene ester, a suitable alcohol and an alkylene oxide in a single vessel reaction. In this method, the reactive p-hydroxystyrene is generated in situ via the base-catalyzed transesterification reaction between the styrene ester and the alcohol in the presence of the base catalyst. The p-hydroxystyrene formed reacts with the alkylene oxide to form the p-(2-hydroxyalkyloxy)styrene monomer or oligomer.Type: GrantFiled: February 14, 2005Date of Patent: April 3, 2007Assignee: E.I. du Pont de Nemours and CompanyInventors: Samuel David Arthur, Keith Kunitsky, Barry M. Trost, Mark E. Wagman
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Patent number: 5984963Abstract: Endovascular stents capable of being cut from a flat piece of material are described. The endovascular stents may be bioabsorbable, multilayered and may have structural configurations allowing them to maintain low profiles in vivo. Methods of manufacturing endovascular stents and methods of using endovascular stents are also described.Type: GrantFiled: April 23, 1996Date of Patent: November 16, 1999Assignee: Medtronic AVE, Inc.Inventors: Carol A. Ryan, Gary L. Boseck, Michael F. Weiser, Samuel J. Santosuosso, Stanley B. Levy, Gary L. Loomis, George J. Ostapchenko, Mark E. Wagman
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Patent number: 5547761Abstract: Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. Exceptional performance as a processing aid in polyolefins results from having T.sub.m (end) of the TFE/HFP copolymer close to the processing temperature of the polyolefin. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents. Copolymer/solvent systems copolymer at significant concentrations in selected solvents are fluid and stable at room temperature.Type: GrantFiled: June 1, 1995Date of Patent: August 20, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventors: George R. Chapman, Jr., Richard A. Morgan, Charles W. Stewart, William H. Tuminello, John G. Van Alsten, Randall A. Vogel, Mark E. Wagman
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Patent number: 5397829Abstract: Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. Exceptional performance as a processing aid in polyolefins results from having T.sub.m (end) of the TFE/HFP copolymer close to the processing temperature of the polyolefin. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents. Copolymer/solvent systems copolymer at significant concentrations in selected solvents are fluid and stable at room temperature.Type: GrantFiled: November 23, 1993Date of Patent: March 14, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Richard A. Morgan, William H. Tuminello, Mark E. Wagman
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Patent number: 5266639Abstract: Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. Exceptional performance as a processing aid in polyolefins results from having T.sub.m (end) of the TFE/HFP copolymer close to the processing temperature of the polyolefin. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents. Copolymer/solvent systems copolymer at significant concentrations in selected solvents are fluid and stable at room temperature.Type: GrantFiled: August 28, 1992Date of Patent: November 30, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: George R. Chapman, Jr., Lewis E. Crenshaw, Rita S. McMinn, Richard A. Morgan, Donnan E. Priester, Charles W. Stewart, William H. Tuminello, Robert E. Tarney, John G. Van Alsten, Mark E. Wagman
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Patent number: 5063263Abstract: Incorporation into polyacetal molding compositions stabilized for processing with a non-meltable polymer stabilizer of 0.01-1.00 weight percent of at least one meltable co-stabilizer, said co-stabilizer being a thermal stabilizer for polyacetal, and 0.02-1.0 weight percent of at least one primary antioxidant results in significantly improved long term stability, as evidenced by greater retention of physical properties over time, of such compositions.Type: GrantFiled: June 11, 1990Date of Patent: November 5, 1991Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard A. Hayes, Leonard E. R. Kosinski, Mark E. Wagman
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Patent number: 5030668Abstract: Incorporation of 0.02-1.0 weight percent of epoxy containing compounds into glass reinforced polyacetal molding compositions resulting in improved anaerobic thermal stability of such compositions during processing.Type: GrantFiled: March 6, 1987Date of Patent: July 9, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventor: Mark E. Wagman