Patents by Inventor Steven D. Brown
Steven D. Brown 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: 20240115092Abstract: A rotatable agitator is used in a surface clearing head of a surface cleaning apparatus. The agitator is coupled to the cleaning head at least partially within an agitator chamber and is rotated about a pivot axis. The agitator includes an elongated agitator body and a hair migration portion. The hair migration portion includes a continuous row of bristles and a sidewall. The continuous row of bristles and sidewall are at least partially revolved around and extend along at least a portion of the pivot axis from one of a collection area or a first end region of the agitator and either another collection area or a second end region of the agitator. The sidewall extends substantially parallel to the continuous row of bristles within the hair migration portion. The continuous row of bristles and sidewall are configured to reduce hair from becoming entangled in the bristles and to migrate hair towards the collection area or the first end region of the agitator.Type: ApplicationFiled: December 22, 2023Publication date: April 11, 2024Inventors: Adam UDY, Andre D. BROWN, Steven P. CARTER
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Publication number: 20240099527Abstract: A surface cleaning head includes a housing having a front side and back side, a brush roll rotatably mounted to the housing within a suction conduit and having at least a portion proximate the opening of the suction conduit, a leading roller mounted to the housing in front of the brush roll, and a drive mechanism operatively coupled to the brush roll and the leading roller for driving the brush roll and the leading roller at same time. The brush roll includes an agitator body and a first bristle/flap arrangement comprising a first deformable flap extending from the agitator body and a first bristle strip and/or row of tufts extending from the agitator body and disposed adjacent to the first deformable flap. The first deformable flap is disposed at an aggressive angle and the first bristle strip and/or row of tufts is arranged at a passive angle.Type: ApplicationFiled: September 3, 2021Publication date: March 28, 2024Inventors: Steven GACIN, Jason B. THORNE, Adam UDY, Charles S. BRUNNER, Xavier F. CULLERE, Nicholas Sardar, Ognjen VRDOLJAK, Daniel R. DER MARDEROSIAN, Andre D. BROWN, Daniel J. INNES
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Patent number: 10723821Abstract: This invention relates to supported metallocene catalyst systems for polymerization, the catalyst systems comprising asymmetrically substituted indenyl groups, high surface area supports, and aluminoxane activators. This invention also relates to methods for polymerizing olefins, including methods for producing isotactic polypropylene.Type: GrantFiled: May 27, 2016Date of Patent: July 28, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jian Yang, Lubin Luo, Steven D. Brown, Xiongdong Lian
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Publication number: 20180162964Abstract: This invention relates to supported metallocene catalyst systems for polymerization, the catalyst systems comprising asymmetrically substituted indenyl groups, high surface area supports, and aluminoxane activators. This invention also relates to methods for polymerizing olefins, including methods for producing isotactic polypropylene.Type: ApplicationFiled: May 27, 2016Publication date: June 14, 2018Inventors: Jian Yang, Lubin Luo, Steven D Brown, Xiongdong Lian
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Patent number: 9725569Abstract: This invention relates to high porosity (?15%) and/or low pore diameter (PD<165 ?m) propylene polymers and propylene polymerization processes using single site catalyst systems with supports having high surface area (SA?400 m2/g), low pore volume (PV?2 mL/g), a specific mean pore diameter range (PD=1-20 nm), and high average particle size (PS?30 ?m).Type: GrantFiled: April 29, 2016Date of Patent: August 8, 2017Assignee: ExxonMobil Chemical Patents Inc.Inventors: Matthew W. Holtcamp, Gregory S. Day, Jian Yang, Lubin Luo, Steven D. Brown, Rohan A. Hule
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Patent number: 9644053Abstract: Catalyst systems and methods for making and using the same are provided. A method for forming a polymer catalyst includes reacting a bromoketone compound with an aryl amine compound to form an amide compound. The amide compound is reacted with an ethylene diamine compound, to form a terminal primary amine compound. The terminal primary amine compound is reacted with a bromoaryl compound to form a ligand.Type: GrantFiled: January 28, 2014Date of Patent: May 9, 2017Assignee: Univation Technologies, LLCInventor: Steven D. Brown
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Process of producing polyolefins using metallocene polymerization catalysts and copolymers therefrom
Patent number: 9611348Abstract: An ethylene copolymer, a Group 4 transition metal catalyst compound, and methods for polymerization using such a compound, said compound represented by the formula: (L)p(R?)zT(Cp)(A)MX2, where M is a Group 4 metal; z is 0 to 8; p is 1 to 3; X is an anionic leaving group; T is a bridging group; R1 to R4 are hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, aryl group, substituted aryl group, or a heteroatom-containing group (where adjacent R groups can form rings); R? is hydrogen, a C1 to C10 alkyl group, a C6 to C24 aryl group, or a C7 to C40 alkylaryl group; and L is a heteroatom or heteroatom-containing group bound to T, Cp is a cyclopentadienyl ring substituted with 0 to 4 substituent groups (where adjacent groups can form C4 to C20 rings); A is Cp or (JS?z*-1-y), where J is a Group 15 or 16 element; S? is a hydrocarbyl, substituted hydrocarbyl, or heteroatom; z* is 2 or 3, and y is 0 or 1, is provided.Type: GrantFiled: April 9, 2014Date of Patent: April 4, 2017Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ian C. Stewart, Steven D. Brown, Crisita Carmen H. Atienza, David T. Harris, Aaron M. Hollas -
Patent number: 9604893Abstract: A method for protecting a phenol group on a precursor compound is provided. The method includes reacting the phenol group with dihydropyran in an acid catalyzed protection reaction and quenching the protection reaction with a strong base within less than about 60 seconds to form a protected precursor compound.Type: GrantFiled: May 12, 2014Date of Patent: March 28, 2017Assignee: Univation Technologies, LLCInventors: C. Jeff Harlan, Steven D. Brown
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Patent number: 9554735Abstract: A system for determining the concentration of an analyte in at least one body fluid in body tissue comprises an infrared light source, a body tissue interface, a detector, and a central processing unit. The body tissue interface is adapted to contact body tissue and to deliver light from the infrared light source to the contacted body tissue. The detector is adapted to receive spectral information corresponding to infrared light transmitted through the portion of body tissue being analyzed and to convert the received spectral information into an electrical signal indicative of the received spectral information. The central processing unit is adapted to compare the electrical signal to an algorithm built upon correlation with the analyte in body fluid, the algorithm adapted to convert the received spectral information into the concentration of the analyte in at least one body fluid.Type: GrantFiled: April 26, 2013Date of Patent: January 31, 2017Assignee: Ascensia Diabetes Care Holdings AGInventors: Mihailo V. Rebec, James E. Smous, Steven D. Brown, Hu-Wei Tan
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Publication number: 20160355653Abstract: This invention relates to high porosity (?15%) and/or low pore diameter (PD<165 ?m) propylene polymers and propylene polymerization processes using single site catalyst systems with supports having high surface area (SA?400 m2/g), low pore volume (PV?2 mL/g), a specific mean pore diameter range (PD=1-20 nm), and high average particle size (PS?30 ?m).Type: ApplicationFiled: April 29, 2016Publication date: December 8, 2016Inventors: Matthew W. Holtcamp, Gregory S. Day, Jian Yang, Lubin Luo, Steven D. Brown, Rohan A. Hule
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Publication number: 20160122270Abstract: A method for protecting a phenol group on a precursor compound is provided. The method includes reacting the phenol group with dihydropyran in an acid catalyzed protection reaction and quenching the protection reaction with a strong base within less than about 60 seconds to form a protected precursor compound.Type: ApplicationFiled: May 12, 2014Publication date: May 5, 2016Applicant: Univation Technologies, LLCInventors: C. Jeff Harlan, Steven D. Brown
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Publication number: 20160024237Abstract: Catalyst systems and methods for making and using the same are provided. A method for forming a polymer catalyst includes reacting a bromoketone compound with an aryl amine compound to form an amide compound. The amide compound is reacted with an ethylene diamine compound, to form a terminal primary amine compound. The terminal primary amine compound is reacted with a bromoaryl compound to form a ligand.Type: ApplicationFiled: January 28, 2014Publication date: January 28, 2016Applicant: Univation Technologies, LLCInventor: Steven D. Brown
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Patent number: 9051731Abstract: A door structure is provided having two outer dampening layers, each outer dampening layer having a base surface and a damping surface, and an inner compartmentalized layer adjacent to the damping surfaces of the two outer dampening layers, the inner compartmentalized layer includes at least two compartments, wherein the damping surfaces of the two outer dampening layers are substantially unconstrained relative to the inner compartmentalized layer such that the damping surfaces are deformable.Type: GrantFiled: August 12, 2013Date of Patent: June 9, 2015Assignee: Georgia-Pacific Gypsum LLCInventors: Vincent B. Thomas, Steven D. Brown, Scott J. Abolt
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Process of Producing Polyolefins Using Metallocene Polymerization Catalysts and Copolymers Therefrom
Publication number: 20140316085Abstract: An ethylene copolymer, a Group 4 transition metal catalyst compound, and methods for polymerization using such a compound, said compound represented by the formula: (L)p(R?)zT(Cp)(A)MX2, where M is a Group 4 metal; z is 0 to 8; p is 1 to 3; X is an anionic leaving group; T is a bridging group; R1 to R4 are hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group, aryl group, substituted aryl group, or a heteroatom-containing group (where adjacent R groups can form rings); R? is hydrogen, a C1 to C10 alkyl group, a C6 to C24 aryl group, or a C7 to C40 alkylaryl group; and L is a heteroatom or heteroatom-containing group bound to T, Cp is a cyclopentadienyl ring substituted with 0 to 4 substituent groups (where adjacent groups can form C4 to C20 rings); A is Cp or (JS?z*-1-y), where J is a Group 15 or 16 element; S? is a hydrocarbyl, substituted hydrocarbyl, or heteroatom; z* is 2 or 3, and y is 0 or 1, is provided.Type: ApplicationFiled: April 9, 2014Publication date: October 23, 2014Inventors: Ian C. Stewart, Steven D. Brown, Crisita Carmen H. Atienza, David T. Harris, Aaron M. Hollas -
Patent number: 8865440Abstract: The present invention provides isolated or genetically modified strains of microorganisms that display enhanced resistance to acetate as a result of increased expression of a sodium proton antiporter. The present invention also provides methods for producing such microbial strains, as well as related promoter sequences and expression vectors. Further, the present invention provides methods of producing alcohol from biomass materials by using microorganisms with enhanced resistance to acetate.Type: GrantFiled: November 29, 2012Date of Patent: October 21, 2014Assignee: UT-Batelle, LLCInventors: Steven D. Brown, Shihui Yang
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Patent number: 8790902Abstract: The present invention provides genetically modified strains of microorganisms that display enhanced tolerance to stress and/or inhibitors such as sodium acetate and vanillin. The enhanced tolerance can be achieved by increasing the expression of a protein of the Sm-like superfamily such as a bacterial Hfq protein and a fungal Sm or Lsm protein. Further, the present invention provides methods of producing alcohol from biomass materials by using the genetically modified microorganisms of the present invention.Type: GrantFiled: August 20, 2012Date of Patent: July 29, 2014Assignee: UT-Batelle, LLCInventors: Steven D. Brown, Shihui Yang
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Publication number: 20140054107Abstract: A door structure is provided having two outer dampening layers, each outer dampening layer having a base surface and a damping surface, and an inner compartmentalized layer adjacent to the damping surfaces of the two outer dampening layers, the inner compartmentalized layer includes at least two compartments, wherein the damping surfaces of the two outer dampening layers are substantially unconstrained relative to the inner compartmentalized layer such that the damping surfaces are deformable.Type: ApplicationFiled: August 12, 2013Publication date: February 27, 2014Applicant: Georgia-Pacific Gypsum LLCInventors: Vincent B. Thomas, Steven D. Brown, Scott J. Abolt
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Publication number: 20130261406Abstract: A system for determining the concentration of an analyte in at least one body fluid in body tissue comprises an infrared light source, a body tissue interface, a detector, and a central processing unit. The body tissue interface is adapted to contact body tissue and to deliver light from the infrared light source to the contacted body tissue. The detector is adapted to receive spectral information corresponding to infrared light transmitted through the portion of body tissue being analyzed and to convert the received spectral information into an electrical signal indicative of the received spectral information. The central processing unit is adapted to compare the electrical signal to an algorithm built upon correlation with the analyte in body fluid, the algorithm adapted to convert the received spectral information into the concentration of the analyte in at least one body fluid.Type: ApplicationFiled: April 26, 2013Publication date: October 3, 2013Applicant: Bayer HealthCare LLCInventors: Mihailo V. Rebec, James E. Smous, Steven D. Brown, Hu-Wei Tan
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Patent number: 8452359Abstract: A system for determining the concentration of an analyte in at least one body fluid in body tissue comprises an infrared light source, a body tissue interface, a detector, and a central processing unit. The body tissue interface is adapted to contact body tissue and to deliver light from the infrared light source to the contacted body tissue. The detector is adapted to receive spectral information corresponding to infrared light transmitted through the portion of body tissue being analyzed and to convert the received spectral information into an electrical signal indicative of the received spectral information. The central processing unit is adapted to compare the electrical signal to an algorithm built upon correlation with the analyte in body fluid, the algorithm adapted to convert the received spectral information into the concentration of the analyte in at least one body fluid.Type: GrantFiled: October 10, 2007Date of Patent: May 28, 2013Assignee: Bayer HealthCare LLCInventors: Mihailo V. Rebec, James E. Smous, Steven D. Brown, Hu-Wei Tan
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Publication number: 20120329112Abstract: The present invention provides genetically modified strains of microorganisms that display enhanced tolerance to stress and/or inhibitors such as sodium acetate and vanillin. The enhanced tolerance can be achieved by increasing the expression of a protein of the Sm-like superfamily such as a bacterial Hfq protein and a fungal Sm or Lsm protein. Further, the present invention provides methods of producing alcohol from biomass materials by using the genetically modified microorganisms of the present invention.Type: ApplicationFiled: August 20, 2012Publication date: December 27, 2012Applicants: OAK RIDGE ASSOCIATED UNIVERSITIES, UT-BATTELLE, LLCInventors: Steven D. Brown, Shihui Yang