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).

  • Patent number: 10457013
    Abstract: 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: Grant
    Filed: May 27, 2014
    Date of Patent: October 29, 2019
    Assignee: DuPont Safety & Construction, Inc.
    Inventors: Dariusz Wlodzimierz Kawka, Tomas L. Perez
  • Patent number: 10300677
    Abstract: A non-rigid composite sheet comprising in order (i) a first component comprising at least one 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 at least one second fabric being adjacent to the at least one first fabric of the first component, and (iii) a third component comprising a second polymeric layer.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: May 28, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Dariusz Wlodzimierz Kawka
  • Patent number: 10029439
    Abstract: A non-rigid composite sheet comprising in order (i) a first component comprising at least one 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 at least one second fabric being adjacent to the at least one first fabric of the first component, and (iii) a third component comprising a second polymeric layer.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: July 24, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Dariusz Wlodzimierz Kawka
  • Publication number: 20180194104
    Abstract: A non-rigid composite sheet comprising in order (i) a first component comprising at least one 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 at least one second fabric being adjacent to the at least one first fabric of the first component, and (iii) a third component comprising a second polymeric layer.
    Type: Application
    Filed: March 9, 2018
    Publication date: July 12, 2018
    Inventor: DARIUSZ WLODZIMIERZ KAWKA
  • Patent number: 9993989
    Abstract: 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: Grant
    Filed: July 23, 2015
    Date of Patent: June 12, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Dariusz Wlodzimierz Kawka
  • Publication number: 20180155876
    Abstract: A method of making a fiber-reinforced composite structure comprising the steps of (i) forming a paper sheet having a Gurley air resistance at least 200 seconds per 100 milliliters, the sheet comprising from 30 to 70 weight percent p-aramid fiber, (ii) depositing on both surfaces of the paper sheet a compression enhancing layer in a quantity up to 5 weight percent based on the weight of the paper, (iii) forming a honeycomb from the sheet of step (ii), and (iv) applying a matrix resin coating to the honeycomb of step (iii).
    Type: Application
    Filed: January 29, 2018
    Publication date: June 7, 2018
    Inventors: MIKHAIL R. LEVIT, DARIUSZ WLODZIMIERZ KAWKA
  • Patent number: 9976258
    Abstract: A method of making a fiber-reinforced composite structure comprises the steps of (i) forming a paper sheet having a Gurley air resistance at least 200 seconds per 100 milliliters, the sheet comprising from 30 to 70 weight percent p-aramid fiber, (ii) depositing on both surfaces of the paper sheet a compression enhancing layer in a quantity up to 5 weight percent based on the weight of the paper, (iii) forming a honeycomb from the sheet of step (ii), and (iv) applying a matrix resin coating to the honeycomb of step (iii).
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: May 22, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Mikhail R Levit, Dariusz Wlodzimierz Kawka
  • Publication number: 20170217120
    Abstract: 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: Application
    Filed: April 20, 2017
    Publication date: August 3, 2017
    Inventors: LLEWELLYN BENTLEY RICHARDSON, III, DARIUSZ WLODZIMIERZ KAWKA
  • Patent number: 9643711
    Abstract: 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: Grant
    Filed: May 6, 2015
    Date of Patent: May 9, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
  • Publication number: 20160332417
    Abstract: A non-rigid composite sheet comprising in order (i) a first component comprising at least one 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 at least one second fabric being adjacent to the at least one first fabric of the first component, and (iii) a third component comprising a second polymeric layer.
    Type: Application
    Filed: March 18, 2016
    Publication date: November 17, 2016
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: DARIUSZ WLODZIMIERZ KAWKA
  • Patent number: 9441326
    Abstract: 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: Grant
    Filed: April 17, 2013
    Date of Patent: September 13, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Dariusz Wlodzimierz Kawka
  • Patent number: 9434142
    Abstract: A method of making a composite sandwich panel comprises the steps of (i) making a core structure, (ii) making at least one facesheet, (iii) bonding at least one of the at least one facesheets to the core structure, wherein the growth of a carbon nanotube structure is achieved during at least one of steps (i) to (iii).
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: September 6, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Mikhail R Levit, Llewellyn Bentley Richardson, III, Warren Francis Knoff, Dariusz Wlodzimierz Kawka
  • Patent number: 9428864
    Abstract: 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: Grant
    Filed: April 17, 2013
    Date of Patent: August 30, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Dariusz Wlodzimierz Kawka
  • Patent number: 9316342
    Abstract: 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: Grant
    Filed: April 17, 2013
    Date of Patent: April 19, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: Dariusz Wlodzimierz Kawka
  • Publication number: 20160101604
    Abstract: 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: Application
    Filed: December 17, 2015
    Publication date: April 14, 2016
    Inventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka
  • Publication number: 20160097162
    Abstract: This invention pertains to a method of making a fiber-reinforced composite structure comprising the steps of (i) forming a paper sheet having a Gurley air resistance at least 200 seconds per 100 milliliters, the sheet comprising from 30 to 70 weight percent p-aramid fiber, (ii) depositing on both surfaces of the paper sheet a compression enhancing layer in a quantity up to 5 weight percent based on the weight of the paper, (iii) forming a honeycomb from the sheet of step (ii), and (iv) applying a matrix resin coating to the honeycomb of step (iii).
    Type: Application
    Filed: August 5, 2015
    Publication date: April 7, 2016
    Inventors: MIKHAIL R. LEVIT, DARIUSZ WLODZIMIERZ KAWKA
  • Patent number: 9302845
    Abstract: 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: Grant
    Filed: January 22, 2014
    Date of Patent: April 5, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Dariusz Wlodzimierz Kawka, Karl K. Chang
  • Patent number: 9296555
    Abstract: 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: Grant
    Filed: November 5, 2013
    Date of Patent: March 29, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Dariusz Wlodzimierz Kawka, Karl K. Chang
  • Publication number: 20160039172
    Abstract: 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: Application
    Filed: July 23, 2015
    Publication date: February 11, 2016
    Inventor: DARIUSZ WLODZIMIERZ KAWKA
  • Patent number: 9242717
    Abstract: 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: Grant
    Filed: November 15, 2013
    Date of Patent: January 26, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Llewellyn Bentley Richardson, III, Dariusz Wlodzimierz Kawka