Patents Assigned to Sefar AG
  • Patent number: 10571970
    Abstract: The invention relates to a composite for an acoustic component having at least one carrier layer and an electrospun membrane which is arranged on the at least one carrier layer, wherein the electrospun membrane is formed of superimposed fibers while a pore structure is being designed. The pore structure of the composite is designed such that the composite has a water column of at least 1 m and an air permeability of 5 L/m2*s. Furthermore, the invention relates to a method for producing a composite for an acoustic component, in which a carrier layer is provided and on the carrier layer a membrane is designed according to the electrospinning method, wherein the membrane is produced of superimposed fibers with a defined pore structure.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: February 25, 2020
    Assignee: SEFAR AG
    Inventors: Mohammad Mokbul Hossain, Hanspeter Meier, Matteo Camani
  • Patent number: 10568983
    Abstract: The invention relates to a wound dressing material with a biocompatible monofilament fabric which forms a contact face on a wound and is designed as a carrier layer on which a cover element is applied and is firmly connected at least in parts to the carrier layer. The invention further relates to a method for producing such a wound dressing material, in which method a biocompatible monofilament fabric is formed as a first web material, a cover element is formed as a second web material, and the first web material and the second web material are brought together, wherein the biocompatible monofilament fabric and the cover element are firmly connected to each other, in particular welded, and the wound dressing material is produced as a band.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: February 25, 2020
    Assignee: Sefar AG
    Inventors: Gerd Gerdes, Jeremie Weber, Alexander Hausser
  • Publication number: 20190292696
    Abstract: A surface piece of crossing threads (12, 14) comprising plastic filaments, which as a woven fabric web (10) is equipped with two mutually opposing surfaces and with openings (16) formed therein. The fabric web comprises a metallisation applied on one side as a surface layer and between 15 and 80%, in particular between 20 and 70% of the fabric web is configured in the form of network intermediate spaces (16).
    Type: Application
    Filed: June 11, 2019
    Publication date: September 26, 2019
    Applicant: SEFAR AG
    Inventors: Rouven Seidler, Peter Chabrecek
  • Publication number: 20190224363
    Abstract: The invention relates to an indicator dressing with a carrier element, which is, at least in regions, provided with a marker material, which material, in a specific microbial contamination, changes a color. According to the invention, a first marker material is provided, which, in a first specific microbial contamination, changes color, and at least one second marker material is provided which changes color in a second specific microbial contamination, which material differs from the first microbial contamination. The invention moreover includes a method for indicating a contamination with this indicator dressing.
    Type: Application
    Filed: August 17, 2017
    Publication date: July 25, 2019
    Applicant: Sefar AG
    Inventors: Gerd GERDES, Jérémie WEBER, Marc PREYSCH
  • Patent number: 10358749
    Abstract: A surface piece of crossing threads (12, 14) comprising plastic filaments, which as a woven fabric web (10) is equipped with two mutually opposing surfaces and with openings (16) formed therein. The fabric web comprises a metallization applied on one side as a surface layer and between 15 and 80%, in particular between 20 and 70% of the fabric web is configured in the form of network intermediate spaces (16).
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: July 23, 2019
    Assignee: SEFAR AG
    Inventors: Rouven Seidler, Peter Chabrecek
  • Patent number: 10328374
    Abstract: The invention relates to a method for producing a contoured filter element, according to which method at least one filtering medium is applied to a flat backing material and is detachably secured thereto. The filtering medium is cut out on the backing material to form the contoured filter element and said contoured filter element can be detached from the backing material for use. The invention also relates to a filter element arrangement produced by means of this method.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: June 25, 2019
    Assignee: Sefar AG
    Inventor: Hansjoerg Duer
  • Patent number: 10315145
    Abstract: The invention relates to a filter for filtering a liquid or a gas, with a pocket-shaped filter element which has a sleeve-shaped circumferential region, a closed head region and an open foot region, and with a frame element which has an annular base, in which the foot region of the filter element is accommodated, and at least one supporting strut which extends away from the base along the circumferential region of the filter element. An advantageous design of the filter is achieved by forming the head region of the filter element with a saddle shape, wherein two lateral tips are provided between which a channel-shaped recess is formed.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: June 11, 2019
    Assignee: Sefar AG
    Inventor: Hansjörg Dür
  • Publication number: 20190143248
    Abstract: The invention relates to a filter element for a filter press having at least one press plate with a first filter side and a second filter side, both filter sides being connected by a central channel, the filter element comprises a first part of filter material to be disposed in the first filter side of the press plate and a second part of filter material to be disposed on the second filter side of the press plate, wherein the first part and the second part of filter material are connected by the connection tube to be inserted into the central channel of the press plate. According to the invention, the connection tube comprises a tube body having an inner diameter, an outer diameter and a substantially wall thickness, wherein at least at one end of the connection tube a ring-shaped front face is formed having a width according to the wall thickness of the connection tube, and one part of filter material is directly fixed on the ring-shaped front face of the connection tube.
    Type: Application
    Filed: October 12, 2018
    Publication date: May 16, 2019
    Applicant: Sefar AG
    Inventors: Sandrine PETIT, Freddy DEMARET, Vincent DELEBECQUE
  • Publication number: 20190008692
    Abstract: The invention relates to a dressing arrangement and to a method for treating a wound of a human or animal body by means of vacuum. The dressing arrangement has an absorbent body for absorbing wound secretions, the absorbent body being designed for insertion in a cavity of the wound. Furthermore, a separating element is provided, which is arranged between the wound and the absorbent body. Furthermore, a cover element, which is designed to cover the wound, together with the absorbent body, in a substantially airtight manner, and a connecting means are provided, which connecting means is arranged for connecting a vacuum source to the cover element. According to the invention, it is provided that the separating element is designed to be larger than the wound to be treated, a protruding edge portion being formed, and that the edge portion is attached to a skin region at the edge of the wound.
    Type: Application
    Filed: November 21, 2016
    Publication date: January 10, 2019
    Applicant: SEFAR AG
    Inventors: Gerd GERDES, Jérémie WEBER
  • Publication number: 20180237967
    Abstract: The invention relates to a composite for a protective vent with at least one carrier layer and an electrospinning membrane, which is arranged on the at least one carrier layer, wherein the electrospinning membrane consists of superimposed fibers lying one above the other, forming a porous structure, whereby the porous structure is designed, whereby the carrier layer comprises a monofilament fabric, a plasma coating is applied both to the electrospinning membrane and to the monofilament fabric of the at least one carrier layer and a bonding is provided that connects the carrier layer and the membrane. Furthermore, the invention relates to an according method for producing the inventive protective vent.
    Type: Application
    Filed: February 15, 2018
    Publication date: August 23, 2018
    Applicant: Sefar AG
    Inventors: Mohammad Mokbul Hossain, Matteo Camani
  • Patent number: 9993759
    Abstract: The invention relates to a filter device for treating a rinsing liquid for material-removing machining, said filter device having a filter element through which the rinsing liquid can be conducted for separating removed material particles. In order to increase the service life, the filter element is provided with a filter fabric, on the filtration upper side of which are formed fabric pores in the form of distinctive longitudinal slots which have a ratio of length to width of ?4:1.
    Type: Grant
    Filed: June 26, 2014
    Date of Patent: June 12, 2018
    Assignee: Sefar AG
    Inventors: Isabell Erlenmaier, Christian Dietmayer, Christian Gurtner, Christoph Maurer
  • Publication number: 20180147315
    Abstract: The invention relates to a wound dressing material with a biocompatible monofilament fabric which forms a contact face on a wound and is designed as a carrier layer on which a cover element is applied and is firmly connected at least in parts to the carrier layer. The invention further relates to a method for producing such a wound dressing material, in which method a biocompatible monofilament fabric is formed as a first web material, a cover element is formed as a second web material, and the first web material and the second web material are brought together, wherein the biocompatible monofilament fabric and the cover element are firmly connected to each other, in particular welded, and the wound dressing material is produced as a band.
    Type: Application
    Filed: July 9, 2015
    Publication date: May 31, 2018
    Applicant: Sefar AG
    Inventors: Gerd GERDES, Jeremie WEBER, Alexander HAUSSER
  • Publication number: 20180071428
    Abstract: The invention relates to a wound dressing and a method for producing a wound dressing with a marker material for indicating a condition of a wound, in particular a microbiological wound milieus. The invention is characterized in that the wound dressing has a contact side which is formed by a biocompatible monofilament fabric of monofilament threads with a smooth surface and in that on the monofilament fabric on its upper side facing away from the wound at least one cover element is fixed which is provided with the marker material.
    Type: Application
    Filed: October 24, 2016
    Publication date: March 15, 2018
    Applicant: Sefar AG
    Inventors: Gerd GERDES, Jérémie WEBER
  • Publication number: 20180046223
    Abstract: The invention relates to a composite for an acoustic component having at least one carrier layer and an electrospun membrane which is arranged on the at least one carrier layer, wherein the electrospun membrane is formed of superimposed fibers whilst a pore structure is being designed. The pore structure of the composite is designed such that the composite has a water column of at least 1 m and an air permeability of 5 L/m2*s. Furthermore, the invention relates to a method for producing a composite for an acoustic component, in which a carrier layer is provided and on the carrier layer a membrane is designed according to the electrospinning method, wherein the membrane is produced of superimposed fibers with a defined pore structure.
    Type: Application
    Filed: January 13, 2017
    Publication date: February 15, 2018
    Applicant: Sefar AG
    Inventors: Mohammad Mokbul HOSSAIN, Hanspeter MEIER, Matteo CAMANI
  • Patent number: 9861918
    Abstract: The invention relates to a filter medium having a filter fabric on an upper side and a support fabric on a lower side, wherein the filter fabric and the support fabric have different yams and together take the form of a double weave, wherein the filter fabric has a pore count of 4000/cm2 or greater, preferably 5000/cm2.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: January 9, 2018
    Assignee: Sefar AG
    Inventors: Isabell Erlenmaier, Christoph Maurer, Christian Gurtner, Christian Dietmayer
  • Publication number: 20170354909
    Abstract: The invention relates to a filter for filtering a liquid or a gas, with a pocket-shaped filter element which has a sleeve-shaped circumferential region, a closed head region and an open foot region, and with a frame element which has an annular base, in which the foot region of the filter element is accommodated, and at least one supporting strut which extends away from the base along the circumferential region of the filter element. An advantageous design of the filter is achieved by forming the head region of the filter element with a saddle shape, wherein two lateral tips are provided between which a channel-shaped recess is formed.
    Type: Application
    Filed: October 29, 2015
    Publication date: December 14, 2017
    Applicant: SEFAR AG
    Inventor: Hansjörg DÜR
  • Publication number: 20160367930
    Abstract: The invention relates to a method for producing a contoured filter element, according to which method at least one filtering medium is applied to a flat backing material and is detachably secured thereto. The filtering medium is cut out on the backing material to form the contoured filter element and said contoured filter element can be detached from the backing material for use. The invention also relates to a filter element arrangement produced by means of this method.
    Type: Application
    Filed: February 9, 2015
    Publication date: December 22, 2016
    Applicant: Sefar AG
    Inventor: Hansjoerg DUER
  • Patent number: 9313884
    Abstract: Electrode substrate for an optoelectronic device having a fabric (10) that includes electrically conductive (14; 56) as well as non-conductive (12; 50) and transparent fibers wherein the fabric is furnished over a wide area with a transparent, electrically conductive coating (26, 28, 58) in such manner that projecting or exposed portions of the electrically conductive fibers cooperate with the conductive coating in order to produce electrical contacts, wherein the conductive coating has a layer thickness that is smaller than a mean diameter of the electrically conductive and electrically non-conductive fibers of the fabric, a fabric weave of the electrically conductive fibers of the fabric is organized in such a manner that in order to create the protruding portions, the fibers encompass at least 2 of the non-conductive fibers that extend transversely in the manner of a twill weave, the fabric is embedded in the coating in such manner that portions (20; 22; 56) of the conductive fibers protrude from a non-con
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: April 12, 2016
    Assignee: Sefar AG
    Inventors: Peter Chabrecek, Uriel Sonderegger
  • Publication number: 20160074788
    Abstract: The invention relates to a filter medium having a filter fabric on an upper side and a support fabric on a lower side, wherein the filter fabric and the support fabric have different yams and together take the form of a double weave, wherein the filter fabric has a pore count of 4000/cm2 or greater, preferably 5000/cm2.
    Type: Application
    Filed: February 17, 2014
    Publication date: March 17, 2016
    Applicant: Sefar AG
    Inventors: Isabell ERLENMAIER, Christoph MAURER, Christian GURTNER, Christian DIETMAYER
  • Patent number: 9278299
    Abstract: A filter element with a filter medium and at least one retainer, to which the filter medium is fixed. The retainer comprises a retainer base body and a retainer attachment. The filter medium is arranged between the retainer base body and the retainer attachment at least in sections, and at least one profile element is formed on the retainer base body and/or on the retainer attachment to allow form-fitting and/or force-fitting retention of the filter medium there between.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: March 8, 2016
    Assignee: Sefar AG
    Inventors: Richard M. Gaiser, Hansjoerg Duer