Patents by Inventor Siegfried Liedauer
Siegfried Liedauer 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: 20220162430Abstract: Composition comprising a heterophasic propylene copolymer with low melt flow rate and rather low amount of xylene cold solubles and a recycled polymer composition being rich in polypropylene.Type: ApplicationFiled: March 16, 2020Publication date: May 26, 2022Inventors: Franz Ruemer, Luca Boragno, Stefan Schiesser, Guenter Dreiling, Christian Hollsten, Siegfried Liedauer, Andrei Ollikainen, Thierry Pezard
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Patent number: 9371702Abstract: The invention relates to well tubings, in particular oil well tubings, having an improved resistance to abrasion and corrosion. A well tubing comprises a plurality of tubing sections each having a bore and an inside diameter, wherein at least part of the tubing sections has polymer liners disposed within said bore of said tubing section, characterized in that said polymer liners are comprised of crosslinked polyethylene.Type: GrantFiled: December 12, 2008Date of Patent: June 21, 2016Assignee: Borealis AGInventors: Martin Anker, Siegfried Liedauer, Markus Oberndorfer, Karin Thayer
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Patent number: 8895123Abstract: Polyolefin multilayer pipes consisting at least one of the layers of a ?-nucleated propylene homopolymer and/or ?-nucleated copolymers from 90.0 to 99.9% by weight of propylene and 0.1 to 10.0% by weight of ?-olefins. The pipes are to be classified in ring stiffness class ?4. The pipes are suitable for non pressure pipe applications, preferably for outdoor use, for above as well as underground drainage and sewerage pipe systems, surface water pipes, pipes for cable protection, pipes for cold climate conditions and for indoor use, soil and waste water pipes.Type: GrantFiled: November 23, 2009Date of Patent: November 25, 2014Assignee: Borealis Technology OyInventors: Carl-Gustaf Ek, Hans Sandberg, Siegfried Liedauer, James McGoldrick
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Patent number: 8722807Abstract: The application relates to a polyethylene composition having a base resin, the base resin comprising (A) a first polyethylene fraction, and (B) a second polyethylene fraction, wherein the melt flow rate MFR5/190° c. of the first fraction is higher than the melt flow rate MFR5/190° c. of the second fraction, the flow rate ratio FRR21/5 of the polyethylene composition, defined as the ratio of melt flow rate MFR21-6/190° c. to melt flow rate MFR5/190° c., is within the range of 15-28, and 10 the melt flow rate MFR5/190° c. of the polyethylene composition is within the range of 0.5-1.1 g/10 min.Type: GrantFiled: November 2, 2005Date of Patent: May 13, 2014Assignee: Borealis Technology OyInventors: Mats Bäckman, James McGoldrick, Bo Hovgard, Siegfried Liedauer, David Walton
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Patent number: 8461267Abstract: The invention relates to novel propylene polymers with improved properties especially with improved stiffness and impact strength comprising propylene homopolymers or propylene block copolymers with 90.0 to 99.9 wt % propylene and 0.1 to 10 wt % ?-olefins with 2 or 4 to 18 carbon atoms, or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are ?-nucleated propylene polymers, whereby the ?-nucleated propylene homopolymers have an Ir??0.98 and the values for tensile modulus and Charpy impact strength as specified herein. The ?-nucleated propylene block copolymers are polymers having an IR? of the propylene homopolymer block of ?0.98 and the values for tensile modulus and Charpy impact strength as also specified herein. The propylene polymers with an improved property spectrum are suitable for producing molded parts in a pipe system, such as pipes and fittings, inspection chambers, pipe ducting systems, extrusion or compression molded sheets and the like.Type: GrantFiled: May 22, 2012Date of Patent: June 11, 2013Inventors: James McGoldrick, Franz Ruemer, Stefan Schiesser, Siegfried Liedauer
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Patent number: 8415447Abstract: Polyolefin coated steel pipes with high dynamic fracture toughness of the coating of the steel pipes during installation handling and in service, consisting of a steel pipe core, optionally an intermediate foamed plastic material, and a polyolefin coating of ?-nucleated propylene copolymers whereby a test polyolefin pipe fabricated from the ?-nucleated propylene copolymer has a critical pressure of >25 bars and a dynamic fracture toughness >3.5 MNm?3/2. The polyolefin coated steel pipes are suitable for off-shore transport of crude oil or gas products or district heating applications.Type: GrantFiled: May 21, 2002Date of Patent: April 9, 2013Assignee: Borealis Technology OyInventors: Cecilia Rydin, James McGoldrick, Tony Lindstroem, Siegfried Liedauer
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Patent number: 8394475Abstract: Industrial polyolefin piping system with improved stiffness, impact strength for use at high service temperature, comprising single or multilayer pipes, fitting, chambers, valves and vessels, consisting of ?-nucleated propylene homopolymers with an IR??0.98 having a tensile modulus ?1500 MPa, a Charpy impact strength, notched, at +23° C.?30 kJ/m2 and a Vicat B temperature >90° C. and a Heat Distortion Temperature >100° C. The industrial polyolefin piping system is suitable for chemical plant constructions comprising single or multilayer pipes, fittings, chambers, valves and vessels with improved stiffness, impact strength and high service temperature, preferred for conveyance of natural gas, dangerous liquids and/or toxic liquids.Type: GrantFiled: February 11, 2011Date of Patent: March 12, 2013Assignee: Borealis Technology OyInventors: James McGoldrick, Siegfried Liedauer, Carl-Gustaf Ek
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Patent number: 8389089Abstract: Single- or multilayer propylene polymer pipes and pipe components for pipelines with improved resistance to rapid crack propagation made from a propylene homopolymer with a melt index of 0.05 to 10 g/10 min at 230° C./2.16 kg or propylene block copolymer from 90.0 to 99.9 wt % of propylene and 0.1 to 10.0 wt % of a ?-olefins with 2 or 4 to 18 carbon atoms with a melt index of 0.05 to 8 g/10 min at 230° C./2.16 kg or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are ?-nucleated propylene polymers, and the propylene polymer pipes for pipelines made from the ?-nucleated propylene homopolymers have a rapid crack propagation characterized by a critical temperature of ?5 to +40° C. and a critical pressure?3 bar below the critical temperature and the propylene polymer pipes made from ?-nucleated propylene block copolymers have a rapid crack propagation characterized by a critical temperature of ?25 to 0° C. and a critical pressure?3 bar below the critical temperature.Type: GrantFiled: February 7, 2011Date of Patent: March 5, 2013Assignee: Borealis Technology OyInventors: James McGoldrick, Siegfried Liedauer, Carl-Gustaf Ek
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Publication number: 20120302680Abstract: The invention relates to novel propylene polymers with improved properties especially with improved stiffness and impact strength comprising propylene homopolymers or propylene block copolymers with 90.0 to 99.9 wt % propylene and 0.1 to 10 wt % ?-olefins with 2 or 4 to 18 carbon atoms, or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are ?-nucleated propylene polymers, whereby the ?-nucleated propylene homopolymers have an Ir??0.98 and the values for tensile modulus and Charpy impact strength as specified herein. The ?-nucleated propylene block copolymers are polymers having an IR? of the propylene homopolymer block of ?0.98 and the values for tensile modulus and Charpy impact strength as also specified herein. The propylene polymers with an improved property spectrum are suitable for producing molded parts in a pipe system, such as pipes and fittings, inspection chambers, pipe ducting systems, extrusion or compression molded sheets and the like.Type: ApplicationFiled: May 22, 2012Publication date: November 29, 2012Applicant: BOREALIS TECHNOLOGY OYInventors: James McGoldrick, Franz Ruemer, Stefan Schiesser, Siegfried Liedauer
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Publication number: 20110132478Abstract: Industrial polyolefin piping system with improved stiffness, impact strength for use at high service temperature, comprising single or multilayer pipes, fitting, chambers, valves and vessels, consisting of ?-nucleated propylene homopolymers with an IR??0.98 having a tensile modulus ?1500 MPa, a Charpy impact strength, notched, at +23° C.?30 kJ/m2 and a Vicat B temperature >90° C. and a Heat Distortion Temperature >100° C. The industrial polyolefin piping system is suitable for chemical plant constructions comprising single or multilayer pipes, fittings, chambers, valves and vessels with improved stiffness, impact strength and high service temperature, preferred for conveyance of natural gas, dangerous liquids and/or toxic liquids.Type: ApplicationFiled: February 11, 2011Publication date: June 9, 2011Applicant: BOREALIS TECHNOLOGY OYInventors: James MCGOLDRICK, Siegfried LIEDAUER, Carl-Gustaf EK
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Publication number: 20110123751Abstract: Single- or multilayer propylene polymer pipes and pipe components for pipelines with improved resistance to rapid crack propagation made from a propylene homopolymer with a melt index of 0.05 to 10 g/10 min at 230° C./2.16 kg or propylene block copolymer from 90.0 to 99.9 wt % of propylene and 0.1 to 10.0 wt % of a ?-olefins with 2 or 4 to 18 carbon atoms with a melt index of 0.05 to 8 g/10 min at 230° C./2.16 kg or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are ?-nucleated propylene polymers, and the propylene polymer pipes for pipelines made from the ?-nucleated propylene homopolymers have a rapid crack propagation characterized by a critical temperature of ?5 to +40° C. and a critical pressure?3 bar below the critical temperature and the propylene polymer pipes made from ?-nucleated propylene block copolymers have a rapid crack propagation characterized by a critical temperature of ?25 to 0° C. and a critical pressure?3 bar below the critical temperature.Type: ApplicationFiled: February 7, 2011Publication date: May 26, 2011Applicant: BOREALIS TECHNOLOGY OYInventors: James MCGOLDRICK, Siegfried Liedauer, Carl-Gustaf Ek
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Publication number: 20110011482Abstract: The invention relates to well tubings, in particular oil well tubings, having an improved resistance to abrasion and corrosion. A well tubing comprises a plurality of tubing sections each having a bore and an inside diameter, wherein at least part of the tubing sections has polymer liners disposed within said bore of said tubing section, characterized in that said polymer liners are comprised of crosslinked polyethylene.Type: ApplicationFiled: December 12, 2008Publication date: January 20, 2011Applicants: OMV Exploration and Production GmbH, BOREALIS AGInventors: Martin Anker, Siegfried Liedauer, Markus Oberndorfer, Karin Thayer
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Publication number: 20100305246Abstract: The invention relates to novel propylene polymers with improved properties especially with improved stiffness and impact strength comprising propylene homopolymers or propylene block copolymers with 90.0 to 99.9 wt % propylene and 0.1 to 10 wt % ?-olefins with 2 or 4 to 18 carbon atoms, or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are ?-nucleated propylene polymers, whereby the ?-nucleated propylene homopolymers have an IR??0.98, a tensile modulus ?1500 MPa at +23° C. and a Charpy impact strength, ?3 kJ/m2 at ?20° C. using notched test specimens, and the ?-nucleated propylene block copolymers are polymers having an IR? of the propylene homopolymer block of ?0.98, a tensile modulus ?1100 Mpa at +23° C. and a Charpy impact strength of ?6 kJ/m2 at ?20° C. using notched test specimens.Type: ApplicationFiled: August 16, 2010Publication date: December 2, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: James MCGOLDRICK, Franz RUEMER, Stefan SCHIESSER, Siegfried LIEDAUER
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Publication number: 20100071796Abstract: Polyolefin multilayer pipes consisting at least one of the layers of a ?-nucleated propylene homopolymer and/or ?-nucleated copolymers from 90.0 to 99.9% by weight of propylene and 0.1 to 10.0% by weight of ?-olefins. The pipes are to be classified in ring stiffness class ?4. The pipes are suitable for non pressure pipe applications, preferably for outdoor use, for above as well as underground drainage and sewerage pipe systems, surface water pipes, pipes for cable protection, pipes for cold climate conditions and for indoor use, soil and waste water pipes.Type: ApplicationFiled: November 23, 2009Publication date: March 25, 2010Applicant: BOREALIS TECHNOLOGY OYInventors: Carl-Gustaf Ek, Hans Sandberg, Siegfried Liedauer, James McGoldrick
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Publication number: 20090062463Abstract: The application relates to a polyethylene composition having a base resin, the base resin comprising (A) a first polyethylene fraction, and (B) a second polyethylene fraction, wherein the melt flow rate MFR5/190° c. of the first fraction is higher than, the melt flow rate MFR5/190° c. of the second fraction, the flow rate ratio FRR21/5 of the polyethylene composition, defined as the ratio of melt flow rate MFR21-6/190° c. to melt flow rate MFR5/190° c., is within the range of 15-28, and 10 the melt flow rate MFR5/190° c. of the polyethylene composition is within the range of 0.5-1.1 g/10 min.Type: ApplicationFiled: November 2, 2005Publication date: March 5, 2009Inventors: Mats Backmann, James McGoldrick, Bo Hovgard, Siegfried Liedauer, David Walton
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Publication number: 20050277720Abstract: The invention relates to filled propylene compositions especially for pipes and pipe systems having increased impact and stiffness properties especially increased long term properties.Type: ApplicationFiled: November 22, 2004Publication date: December 15, 2005Inventors: Carl-Gustaf Ek, Siegfried Liedauer, James Mcgoldrick, Franz Ruemer
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Publication number: 20050025922Abstract: Polyolefin coated steel pipes with high dynamic fracture toughness of the coating of the steel pipes during installation handling and in service, consisting of a steel pipe core, optionally an intermediate foamed plastic material, and a polyolefin coating of ?-nucleated propylene copolymers whereby a test polyolefin pipe fabricated from the ?-nucleated propylene copolymer has a critical pressure of >25 bars and a dynamic fracture toughness >3.5 MNm?3/2. The polyolefin coated steel pipes are suitable for off-shore transport of crude oil or gas products or district heating applications.Type: ApplicationFiled: May 21, 2002Publication date: February 3, 2005Inventors: Cecilia Rydin, James McGoldrick, Tony Lindstroem, Siegfried Liedauer
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Publication number: 20040170790Abstract: Polyolefin multilayer pipes consisting at least one of the layers of a &bgr;-nucleated propylene homopolymer and/or &bgr;-nucleated copolymers from 90.0 to 99.9% by weight of propylene and 0.1 to 10.0% by weight of &agr;-olefins. The pipes are to be classified in ring stiffness class ≧4. The pipes are suitable for non pressure pipe applications, preferably for outdoor use, for above as well as underground drainage and sewerage pipe systems, surface water pipes, pipes for cable protection, pipes for cold climate conditions and for indoor use, soil and waste water pipes.Type: ApplicationFiled: February 25, 2004Publication date: September 2, 2004Inventors: Carl-Gustaf Ek, Hans Sandberg, Siegfried Liedauer, James McGoldrick
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Publication number: 20040157969Abstract: Single- or multilayer propylene polymer pipes and pipe components for pipelines with improved resistance to rapid crack propagation made from a propylene homopolymer with a melt index of 0.05 to 10 g/10 min at 230° C./2.16 kg or propylene block copolymer from 90.0 to 99.9 wt % of propylene and 0.1 to 10.0 wt % of a &agr;-olefins with 2 or 4 to 18 carbon atoms with a melt index of 0.05 to 8 g/10 min at 230° C./2.16 kg or mixtures thereof, wherein the propylene homopolymers or propylene block copolymers are &bgr;-nucleated propylene polymers, and the propylene polymer pipes for pipelines made from the &bgr;-nucleated propylene homopolymers have a rapid crack propagation characterized by a critical temperature of −5 to +40° C. and a critical pressure ≧3 bar below the critical temperature and the propylene polymer pipes made from &bgr;-nucleated propylene block copolymers have a rapid crack propagation characterized by a critical temperature of −25 to 0° C.Type: ApplicationFiled: February 25, 2004Publication date: August 12, 2004Inventors: James McGoldrick, Siegfried Liedauer, Carl-Gustaf Ek
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Publication number: 20040157019Abstract: Industrial polyolefin piping system with improved stiffness, impact strength for use at high service temperature, comprising single or multilayer pipes, fitting, chambers, valves and vessels, consisting of &bgr;-nucleated propylene homopolymers with an IR&tgr;≧0.98 having a tensile modulus ≧1500 MPa, a Charpy impact strength, notched, at +23° C.≧30 kJ/m2 and a Vicat B temperature >90° C. and a Heat Distortion Temperature >100° C. The industrial polyolefin piping system is suitable for chemical plant constructions comprising single or multilayer pipes, fittings, chambers, valves and vessels with improved stiffness, impact strength and high service temperature, preferred for conveyance of natural gas, dangerous liquids and/or toxic liquids.Type: ApplicationFiled: February 25, 2004Publication date: August 12, 2004Inventors: James McGoldrick, Siegfried Liedauer, Carl-Gustav Ek