Patents by Inventor Dariusz Wlodzimierz Kawka
Dariusz Wlodzimierz Kawka 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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Publication number: 20160039172Abstract: A non-rigid composite sheet comprising in order (i) a first component comprising a first fabric of continuous filament yarns having a tenacity of at least 11 g/dtex and a first polymeric layer, (ii) a second component comprising at least one second fabric of continuous filament glass yarns, the second fabric being adjacent to the first fabric of the first component, and (iii) a third component comprising a second polymeric layer.Type: ApplicationFiled: July 23, 2015Publication date: February 11, 2016Inventor: DARIUSZ WLODZIMIERZ KAWKA
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Patent number: 9242717Abstract: A multilayer laminate comprising a first polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, a first adhesive layer having an areal weight of from 2 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C., an inorganic refractory layer comprising platelets in an amount of at least 85% by weight with a dry areal weight of 15 to 50 gsm and having a residual moisture content of no greater than 10 percent by weight, a second adhesive layer having an areal weight of from 4 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C. and a second polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 minutes.Type: GrantFiled: November 15, 2013Date of Patent: January 26, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
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Patent number: 9238505Abstract: A multilayer laminate comprising in order, a polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, an adhesive layer having an areal weight of from 2 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C. and an inorganic refractory layer wherein the refractory layer comprises platelets in an amount at least 85% by weight with a dry areal weight of 15 to 50 gsm and has a residual moisture content of no greater than 10 percent by weight.Type: GrantFiled: November 15, 2013Date of Patent: January 19, 2016Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
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Publication number: 20150343736Abstract: This invention is directed to a non-rigid composite sheet comprising in order (i) a first component having an areal weight of from 88 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer. (ii) a second component having an areal weight of from 120 to 430 gsm comprising a flame resistant paper and (iii) a third component having an areal weight of from 88 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the paper of the second component.Type: ApplicationFiled: May 27, 2014Publication date: December 3, 2015Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: DARIUSZ WLODZIMIERZ KAWKA, TOMAS L. PEREZ
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Patent number: 9056666Abstract: A multilayer laminate for use as a flame barrier in an aircraft comprising (i) a polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, (ii) an adhesive layer having an areal weight of from 2 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C., (iii) an inorganic refractory layer, and (iv) aramid paper comprising from 50 to 90 weight percent of aramid fibers and from 10 to 50 weight percent of meta-aramid binder wherein the inorganic refractory layer of (iii) comprises platelets in an amount of at least 85% by weight with a dry areal weight of 15 to 50 gsm and a residual moisture content of no greater than 10 percent by weight.Type: GrantFiled: November 12, 2013Date of Patent: June 16, 2015Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
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Patent number: 8967331Abstract: This invention is directed to a multilayered sheet comprising a release paper and an inorganic refractory layer coated onto one surface of the release paper wherein the refractory layer has a dry areal weight of from 15 to 50 gsm and a residual moisture content of no greater than 10 percent by weight. The paper comprises a blend of cellulose and cotton fibers and is hydrophilic.Type: GrantFiled: December 3, 2012Date of Patent: March 3, 2015Assignee: E I du Pont de Nemours and CompanyInventor: Dariusz Wlodzimierz Kawka
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Publication number: 20150056429Abstract: This invention pertains to a layered sheet comprising a flame resistant wet-laid nonwoven carrier having a first and second surface and an inorganic refractory layer adjacent to at least one surface of the carrier wherein the refractory layer has a dry area weight of from 15 to 50 gsm, the bond strength between the refractory layer and the surface of the carrier is at least 0.25 lb/in, wherein the carrier comprises from 40 to 70 weight percent of aramid fibers and from 30 to 60 weight percent of polymeric binder, is hydrophilic, has a smoothness on at least one surface of no less than 250 Sheffield units, a thickness of from 0.025 to 0.175 mm and a density of from 0.25 to 0.60 g/cc. Preferably the carrier is in the form of a paper.Type: ApplicationFiled: April 17, 2013Publication date: February 26, 2015Inventor: Dariusz Wlodzimierz Kawka
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Publication number: 20150050475Abstract: This invention pertains to a layered sheet comprising a flame resistant wet-laid nonwoven paper having a first and second surface and an inorganic refractory layer adjacent to at least one surface of the paper wherein the refractory layer has a dry areal weight of from 15 to 50 gsm and the bond strength between the refractory layer and the surface of the paper is from 0.25 lb/in to 0.8 lb/in, wherein the carrier comprises from 40 to 70 weight percent of aramid fibers and from 30 to 60 weight percent of polymeric binder, is hydrophilic, has a smoothness on at least one surface of no greater than 150 Sheffield units, a thickness of from 0.025 to 0.175 mm and a density of from 0.60 to 1.1 g/cc.Type: ApplicationFiled: April 17, 2013Publication date: February 19, 2015Applicant: E I Du Pont De Nemours and CompanyInventor: Dariusz Wlodzimierz Kawka
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Publication number: 20150050474Abstract: This invention pertains to a layered sheet comprising an inherently flame resistant high strength fiber wet-laid nonwoven carrier having a first and second surface and an inorganic refractory layer adjacent to at least one surface of the carrier wherein the refractory layer has a dry area weight of from 15 to 50 gsm and the bond strength between the refractory layer and the surface of the paper is at least 0.25 lb/in, preferably at least 0.8 lb/in, wherein the carrier comprises from 70 to 90 weight percent of aramid fibers and from 10 to 30 weight percent of polymeric binder, is hydrophilic, has a thickness of from 0.025 to 0.175 mm and a density of from 0.25 to 1.1 g/cc.Type: ApplicationFiled: April 17, 2013Publication date: February 19, 2015Applicant: E I Du Pont Nemoure and CompanyInventor: Dariusz Wlodzimierz Kawka
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Patent number: 8835822Abstract: A field director assembly includes electrically conductive vanes configured to prevent arcing in an unloaded microwave oven.Type: GrantFiled: December 18, 2006Date of Patent: September 16, 2014Assignee: E I du Pont de Nemours and CompanyInventors: Nicole L. Blankenbeckler, William R. Corcoran, Jr., Dariusz Wlodzimierz Kawka, Mehrdad Mehdizadeh, Ronald Jack Riegert
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Publication number: 20140217092Abstract: This invention is directed to a non-rigid composite sheet comprising in order a first component having an areal density of from 102 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer, a second component having an areal density of from 10 to 170 gsm comprising a flame resistant inorganic refractory layer adjacent to at least one protective polymeric layers, and a third component having an areal density of from 102 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the refractory layer of the second component.Type: ApplicationFiled: January 22, 2014Publication date: August 7, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: DARIUSZ WLODZIMIERZ KAWKA, KARL K. CHANG
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Publication number: 20140154444Abstract: This invention is directed to a non-rigid composite sheet comprising in order (i) a first component having an areal density of from 88 to 678 gsm comprising a first fabric of filamentary yarns having a tenacity of at least 11 g/dtex and a UV and weather impervious first polymeric layer. (ii) a second component having an areal density of from 30 to 237 gsm comprising a flame resistant substrate and an inorganic refractory layer and (iii) a third component having an areal density of from 88 to 678 gsm comprising a second fabric of filamentary yarns having a tenacity of at least 11 g/dtex and an impact and scratch resistant second polymeric layer, the second fabric of the third component being adjacent to the refractory layer of the second component.Type: ApplicationFiled: November 5, 2013Publication date: June 5, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: DARIUSZ WLODZIMIERZ KAWKA, KARL K. CHANG
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Publication number: 20140072762Abstract: A multilayer laminate comprising in order, a polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, an adhesive layer having an areal weight of from 2 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C. and an inorganic refractory layer wherein the refractory layer comprises platelets in an amount at least 85% by weight with a dry areal weight of 15 to 50 gsm and has a residual moisture content of no greater than 10 percent by weight.Type: ApplicationFiled: November 15, 2013Publication date: March 13, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Llewellyn Bentley Richardson III, Dariusz Wlodzimierz Kawka
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Publication number: 20140072763Abstract: A multilayer laminate comprising a first polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, a first adhesive layer having an areal weight of from 2 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C., an inorganic refractory layer comprising platelets in an amount of at least 85% by weight with a dry areal weight of 15 to 50 gsm and having a residual moisture content of no greater than 10 percent by weight, a second adhesive layer having an areal weight of from 4 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C. and a second polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 minutes.Type: ApplicationFiled: November 15, 2013Publication date: March 13, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
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Publication number: 20140065357Abstract: A multilayer laminate for use as a flame barrier in an aircraft comprising (i) a polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, (ii) an adhesive layer having an areal weight of from 2 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C., (iii) an inorganic refractory layer, and (iv) aramid paper comprising from 50 to 90 weight percent of aramid fibers and from 10 to 50 weight percent of meta-aramid binder wherein the inorganic refractory layer of (iii) comprises platelets in an amount of at least 85% by weight with a dry areal weight of 15 to 50 gsm and a residual moisture content of no greater than 10 percent by weight.Type: ApplicationFiled: November 12, 2013Publication date: March 6, 2014Applicant: E I Du Pont De Nemours And CompanyInventors: LLEWELLYN BENTLEY RICHARDSON, III, DARIUSZ WLODZIMIERZ KAWKA
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Patent number: 8618453Abstract: A susceptor assembly includes electrically conductive vanes positioned with respect to each other and to an planar susceptor member having an electrically lossy layer thereon to prevent overheating of the susceptor in an unloaded microwave oven.Type: GrantFiled: December 18, 2006Date of Patent: December 31, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Nicole L. Blankenbeckler, William R. Corcoran, Jr., Dariusz Wlodzimierz Kawka
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Patent number: 8607926Abstract: A multilayer laminate comprising in order, a polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, an adhesive layer having an areal weight of from 2 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C. and an inorganic refractory layer.Type: GrantFiled: December 14, 2011Date of Patent: December 17, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
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Patent number: 8607927Abstract: A multilayer laminate comprising a first polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, a first adhesive layer having an areal weight of from 2 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C., an inorganic refractory layer, a second adhesive layer having an areal weight of from 4 to 40 gsm capable of activation at a temperature of from 75 to 200 degrees C. and a second polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, wherein at least one of the first or second polymeric film layers is thermoplastic.Type: GrantFiled: December 14, 2011Date of Patent: December 17, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
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Patent number: 8607928Abstract: A multilayer laminate for use as a flame barrier in an aircraft comprising a polymeric film layer capable of withstanding a temperature of at least 200 C for at least 10 min, an adhesive layer, an inorganic refractory layer and an aramid paper comprising from 50 to 90 weight percent of aramid fibers and from 10 to 50 weight percent of meta-aramid binder.Type: GrantFiled: December 14, 2011Date of Patent: December 17, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
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Patent number: 8598500Abstract: A susceptor assembly includes electrically conductive vanes configured to prevent arcing in an unloaded microwave oven.Type: GrantFiled: December 18, 2006Date of Patent: December 3, 2013Assignee: E I du Pont de Nemours and CompanyInventors: Nicole L. Blankenbeckler, William R. Corcoran, Jr., Dariusz Wlodzimierz Kawka, Mehrdad Mehdizadeh, Ronald Jack Riegert