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).
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Patent number: 10919283Abstract: 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: GrantFiled: September 24, 2015Date of Patent: February 16, 2021Assignee: SIKA TECHNOLOGY AGInventors: Stefan Keiser, Yannic Pironato
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Publication number: 20180179418Abstract: 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: ApplicationFiled: March 2, 2016Publication date: June 28, 2018Applicant: SIKA TECHNOLOGY AGInventors: Matthias GÖSSI, Stefan KEISER, Josef LUSSI
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Publication number: 20170297318Abstract: 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: ApplicationFiled: September 24, 2015Publication date: October 19, 2017Applicant: SIKA TECHNOLOGY AGInventors: Stefan KEISER, Yannic PIRONATO
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Patent number: 9708513Abstract: 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: GrantFiled: May 6, 2013Date of Patent: July 18, 2017Assignee: SIKA TECHNOLOGY AGInventors: Herbert Ackermann, Matthias Gössi, Frank Hoefflin, Stefan Keiser, Roman Rohrer, Jean-Claude Rudolf
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Patent number: 9650549Abstract: 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: GrantFiled: May 6, 2013Date of Patent: May 16, 2017Assignee: SIKA TECHNOLOGY AGInventors: Herbert Ackermann, Matthias Gössi, Frank Hoefflin, Stefan Keiser, Roman Rohrer, Jean-Claude Rudolf
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Publication number: 20150166852Abstract: 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: ApplicationFiled: May 6, 2013Publication date: June 18, 2015Inventors: Herbert Ackermann, Matthias Gössi, Frank Hoefflin, Stefan Keiser, Roman Rohrer, Jean-Claude Rudolf
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Publication number: 20150086774Abstract: 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: ApplicationFiled: May 6, 2013Publication date: March 26, 2015Applicant: Sika Technology AGInventors: Herbert Ackermann, Matthias Gössi, Frank Hoefflin, Stefan Keiser, Roman Rohrer, Jean-Claude Rudolf
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Publication number: 20120240996Abstract: 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: ApplicationFiled: April 2, 2012Publication date: September 27, 2012Applicant: SIKA TECHNOLOGY AGInventors: Stefan KEISER, Adrian MICHEL, Norman BLANK, Josef LUSSI, Heinz MEIER
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Publication number: 20120227793Abstract: 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: ApplicationFiled: November 2, 2010Publication date: September 13, 2012Applicant: SIKA TECHNOLOGY AGInventors: Heinz Meier, Hans Rohrer, Stefan Keiser, Josef Lussi, Norman Blank
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Publication number: 20040060555Abstract: 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: ApplicationFiled: September 12, 2003Publication date: April 1, 2004Inventors: Stefan Keiser, Martin Rohrer, Lydie Delineau