Patents by Inventor Stefan Keiser

Stefan Keiser 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: 10919283
    Abstract: A sealing membrane including: a) a thermoplastic polyolefin membrane and b) a barrier film including b1) a barrier layer including at least one polymer selected from ethylene-vinyl alcohol copolymer, polyamide or polyester and b2) an outer layer, wherein the barrier film is laminated over the full surface area or over part of the surface area onto the polyolefin membrane, and so the outer layer is connected directly to the polyolefin membrane, and the outer layer and the polyolefin membrane are both ethylene-based or the outer layer and the polyolefin membrane are both propylene-based. The sealing membrane can be produced at low cost and has a stable interconnecting bond. It is suitable in particular for sealing in building construction or civil engineering work.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: February 16, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Stefan Keiser, Yannic Pironato
  • Publication number: 20180179418
    Abstract: A method for sealing a substrate having one or a number of electrically conductive surface regions, including the (i) arranging of a sealing membrane, having a plastic layer and an outer adhesive layer made of a melt adhesive, on the substrate, wherein the adhesive layer is facing towards the substrate, (ii) the positioning of an induction heating device over the sealing membrane, and (iii) heating the melt adhesive for the fusion or partial melting thereof by means of the inductive heating of the electrically conductive surface regions with the induction heating device, in order to adhere the sealing membrane to the substrate after cooling. The method facilitates the sealing of substrates with sealing membranes. Same is suitable, in particular, for sealing floors or ceilings or parts thereof.
    Type: Application
    Filed: March 2, 2016
    Publication date: June 28, 2018
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Matthias GÖSSI, Stefan KEISER, Josef LUSSI
  • Publication number: 20170297318
    Abstract: A sealing membrane including: a) a thermoplastic polyolefin membrane and b) a barrier film including b1) a barrier layer including at least one polymer selected from ethylene-vinyl alcohol copolymer, polyamide or polyester and b2) an outer layer, wherein the barrier film is laminated over the full surface area or over part of the surface area onto the polyolefin membrane, and so the outer layer is connected directly to the polyolefin membrane, and the outer layer and the polyolefin membrane are both ethylene-based or the outer layer and the polyolefin membrane are both propylene-based. The sealing membrane can be produced at low cost and has a stable interconnecting bond. It is suitable in particular for sealing in building construction or civil engineering work.
    Type: Application
    Filed: September 24, 2015
    Publication date: October 19, 2017
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Stefan KEISER, Yannic PIRONATO
  • Patent number: 9708513
    Abstract: The present invention relates to a sealing device (1) which comprises a barrier layer (2) with a thermoplastic polymer P1, and an adhesive layer (3) with at least one ethylene-vinyl acetate copolymer (EVA) P2 and azo-dicarbonamide A, and which is suitable for sealing bases in the building sector. The invention further relates to a method for sealing said bases. The method according to the invention allows structures of civil engineering to be sealed rapidly and efficiently and ensures good adhesion of the sealing device on the base.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: July 18, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Herbert Ackermann, Matthias Gössi, Frank Hoefflin, Stefan Keiser, Roman Rohrer, Jean-Claude Rudolf
  • Patent number: 9650549
    Abstract: The present invention relates to a sealing device (1) comprising a barrier layer (2) and an adhesive layer (3), and which is suitable for sealing bases in the building sector. The adhesive layer comprises a polymer P2, the polymer P2 being polyethylene (PE), polypropylene (PP) or a copolymer of ethylene and propylene, and a polyolefin-based polymer P3, the polymer P3 having at least one functional group which is selected from the group consisting of carboxylic acids, OH-groups, anhydrides, acetates and glycidyl methacrylate, and azo-dicarbonamide A. The invention further relates to a method for sealing the said bases. The method according to the invention allows structures of civil engineering to be sealed rapidly and efficiently and ensures good adhesion of the sealing device on the base.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: May 16, 2017
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Herbert Ackermann, Matthias Gössi, Frank Hoefflin, Stefan Keiser, Roman Rohrer, Jean-Claude Rudolf
  • Publication number: 20150166852
    Abstract: The present invention relates to a sealing device (1) which comprises a barrier layer (2) with a thermoplastic polymer P1, and an adhesive layer (3) with at least one ethylene-vinyl acetate copolymer (EVA) P2 and azo-dicarbonamide A, and which is suitable for sealing bases in the building sector. The invention further relates to a method for sealing said bases. The method according to the invention allows structures of civil engineering to be sealed rapidly and efficiently and ensures good adhesion of the sealing device on the base.
    Type: Application
    Filed: May 6, 2013
    Publication date: June 18, 2015
    Inventors: Herbert Ackermann, Matthias Gössi, Frank Hoefflin, Stefan Keiser, Roman Rohrer, Jean-Claude Rudolf
  • Publication number: 20150086774
    Abstract: The present invention relates to a sealing device (1) comprising a barrier layer (2) and an adhesive layer (3), and which is suitable for sealing bases in the building sector. The adhesive layer comprises a polymer P2, the polymer P2 being polyethylene (PE), polypropylene (PP) or a copolymer of ethylene and propylene, and a polyolefin-based polymer P3, the polymer P3 having at least one functional group which is selected from the group consisting of carboxylic acids, OH-groups, anhydrides, acetates and glycidyl methacrylate, and azo-dicarbonamide A. The invention further relates to a method for sealing the said bases. The method according to the invention allows structures of civil engineering to be sealed rapidly and efficiently and ensures good adhesion of the sealing device on the base.
    Type: Application
    Filed: May 6, 2013
    Publication date: March 26, 2015
    Applicant: Sika Technology AG
    Inventors: Herbert Ackermann, Matthias Gössi, Frank Hoefflin, Stefan Keiser, Roman Rohrer, Jean-Claude Rudolf
  • Publication number: 20120240996
    Abstract: In an exemplary embodiment, a membrane is disclosed having a barrier layer and a solar cell arranged on one side of the barrier layer. A compensation layer can be arranged between the solar cell and the barrier layer. This compensation layer can, for example, be a foamed composition composed of a thermoplastic that is solid at room temperature or a thermoplastic elastomer that is solid at room temperature.
    Type: Application
    Filed: April 2, 2012
    Publication date: September 27, 2012
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Stefan KEISER, Adrian MICHEL, Norman BLANK, Josef LUSSI, Heinz MEIER
  • Publication number: 20120227793
    Abstract: A method for sealing the edges of photovoltaic modules, including the steps of i) providing a photovoltaic module by applying at least one photovoltaic laminate to a carrier; ii) treating the photovoltaic module produced in step i) along the edge region of the photovoltaic laminate by means of a plasma pretreatment or by flame application by means of a gas flame, such that both the edge region of the photovoltaic laminate and, at least partially, the carrier is detected by the plasma pretreatment or the flame application; and iii) applying a sealing mass at least partially to the pretreated location, wherein the sealing mass is a silicone composition or a composition based on silane-terminated poly(meth)acrylates.
    Type: Application
    Filed: November 2, 2010
    Publication date: September 13, 2012
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Heinz Meier, Hans Rohrer, Stefan Keiser, Josef Lussi, Norman Blank
  • Publication number: 20040060555
    Abstract: An apparatus for heating or cooling a fluid medium by means of environmental influences, such as light, solar irradiation and/or ambient temperature, etc., has at least two films arranged parallel to each other which at least to some extent adhere to each other in such a way that one or more chamber-like cavities or interspaces to hold the fluid medium are formed. The apparatus has at least one opening for the supply of a fluid medium, and also at least one opening for the discharge of the fluid medium. The production of the apparatus is for example carried out by means of fishtail extrusion of two films, which are extruded lying on each other, a separating material, such as a separating film, a separating nonwoven, a separating fabric or a release agent, being introduced between the two film layers in those regions in which the chamber-like cavities are to be formed.
    Type: Application
    Filed: September 12, 2003
    Publication date: April 1, 2004
    Inventors: Stefan Keiser, Martin Rohrer, Lydie Delineau