Patents by Inventor Yubiao LIU
Yubiao LIU 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: 20230341306Abstract: The present invention provides a standard testing methodology for making quantitative determinations as to the chemical resistance of thermoplastics commonly used for non-disposable medical devices by evaluating the retention of tensile and/or impact properties of the thermoplastic materials after exposure to chemicals associated with healthcare grade disinfectants. Versions of the test methods may be used with any of a variety of different thermoplastic materials, each having a different stiffness or elastic modulus; and versions of the test methods may be used with any of a variety of different hospital grade cleaning agents or disinfectants. Using the methodology of embodiments of the present invention, different thermoplastic materials may be tested against different cleaners or disinfectants to provide a uniform basis for comparison.Type: ApplicationFiled: April 17, 2023Publication date: October 26, 2023Applicant: Healthcare Surfaces Summit dba Healthcare Surfaces InstituteInventors: Mike Zettel, Yubiao Liu, James Hicks, Kay Bernhard, Pooja Bajaj, Mark Lamont, Ellen Turner
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Patent number: 9447257Abstract: This invention relates to polymer compositions comprising: (1) at least one polymer selected from the groups consisting of: nylon, polyesters, copolyesters, polyethylene, polypropylene, polyamides; polystyrene, polystyrene copolymers, styrene acrylonitrile copolymers, acrylonitrile butadiene styrene copolymers, poly(methylmethacrylate), acrylic copolymers, poly(ether-imides); polyphenylene oxides or poly(phenylene oxide)/polystyrene blends, polystyrene resins; polyphenylene sulfides; polyphenylene sulfide/sulfones; poly(ester-carbonates); polycarbonates; polysulfones; polysulfone ethers; and poly(ether-ketones); or mixtures of any of the other foregoing polymers, and (2) at least one fluoroalkyl derivative.Type: GrantFiled: February 6, 2015Date of Patent: September 20, 2016Assignee: Eastman Chemical CompanyInventor: Yubiao Liu
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Blends of polyesters containing cyclobutanediol with fluoroalkyl additives and devices made thererom
Patent number: 9410029Abstract: This invention relates to polymer compositions comprising: (I) at least one polyester which comprises: (a) a dicarboxylic acid component comprising: i) 70 to 100 mole % of terephthalic acid residues; ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and (b) a glycol component comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, wherein the total mole % of the dicarboxylic acid component is 100 mole %, the total mole % of the glycol component is 100 mole %; and wherein the inherent viscosity of the polyester is from 0.1 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.; and (II) at least one fluoroalkyl derivative.Type: GrantFiled: February 6, 2015Date of Patent: August 9, 2016Assignee: Eastman Chemical CompanyInventor: Yubiao Liu -
Patent number: 9125969Abstract: Comblike, surfactant polymers for changing the surface properties of biomaterials are provided. Such surfactant polymers comprise a polymeric backbone of repeating monomeric units having functional groups for coupling with side chains, a plurality of hydrophobic side chains linked to the backbone via the functional groups, and a plurality of hydrophilic side chains linked to said backbone via the functional groups. Medical devices coated with the surfactant polymers are also provided. The surfactant polymers may be used to decrease the thrombogenic properties, encapsulation, and bacterial colonization of medical devices.Type: GrantFiled: March 16, 2012Date of Patent: September 8, 2015Assignee: NANOMIMETICS, INC.Inventors: Jan J. Lewandowski, Yubiao Liu, Roger Marchant, Tianhong Zhang, Yongxing Qiu, Mark A. Ruegsegger
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Publication number: 20150225542Abstract: This invention relates to polymer compositions comprising: (1) at least one polymer selected from the groups consisting of: nylon, polyesters, copolyesters, polyethylene, polypropylene, polyamides; polystyrene, polystyrene copolymers, styrene acrylonitrile copolymers, acrylonitrile butadiene styrene copolymers, poly(methylmethacrylate), acrylic copolymers, poly(ether-imides); polyphenylene oxides or poly(phenylene oxide)/polystyrene blends, polystyrene resins; polyphenylene sulfides; polyphenylene sulfide/sulfones; poly(ester-carbonates); polycarbonates; polysulfones; polysulfone ethers; and poly(ether-ketones); or mixtures of any of the other foregoing polymers, and (2) at least one fluoroalkyl derivative.Type: ApplicationFiled: February 6, 2015Publication date: August 13, 2015Applicant: Eastman Chemical CompanyInventor: YUBIAO LIU
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BLENDS OF POLYESTERS CONTAINING CYCLOBUTANEDIOL WITH FLUOROALKYL ADDITIVES AND DEVICES MADE THEREROM
Publication number: 20150225543Abstract: This invention relates to polymer compositions comprising: (I) at least one polyester which comprises: (a) a dicarboxylic acid component comprising: i) 70 to 100 mole % of terephthalic acid residues; ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbon atoms; and iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and (b) a glycol component comprising 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, wherein the total mole % of the dicarboxylic acid component is 100 mole %, the total mole % of the glycol component is 100 mole %; and wherein the inherent viscosity of the polyester is from 0.1 to 1.2 dL/g as determined in 60/40 (wt/wt) phenol/tetrachloroethane at a concentration of 0.5 g/100 ml at 25° C.; and (II) at least one fluoroalkyl derivative.Type: ApplicationFiled: February 6, 2015Publication date: August 13, 2015Applicant: Eastman Chemical CompanyInventor: YUBIAO LIU -
Patent number: 8945664Abstract: A biomimetic surfactant polymer modified with various crosslinking embodiments is described. The crosslinking embodiments provide a biomimetic surfactant coating that is designed to resist cracking, scratching, spalling and chemical dissolution. The crosslinking embodiments comprise the use of various hydrophilic and hydrophobic functional groups. The modified biomimetic surfactant adheres to different substrate surfaces, particularly the surfaces of medical devices.Type: GrantFiled: October 28, 2011Date of Patent: February 3, 2015Assignee: Greatbatch Ltd.Inventors: Jan J. Lewandowski, Yubiao Liu
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Publication number: 20120328556Abstract: A comb-like surfactant polymer for changing the surface properties of biomaterials is described. The surfactant polymer comprises a polymeric backbone of repeating monomeric units having functional groups for chemically attaching to side chains, a plurality of hydrophobic side chains attached to the backbone via the functional groups and a plurality of hydrophilic side chains chemically attached via functional groups to the polymeric backbone. The hydrophilic side chains providing anti-thrombogenic properties to the surfactant. An antimicrobial agent selectively attached to some hydrophilic side chains thereby providing additional antimicrobial properties to the surfactant. The surfactant polymer may be applied to the surface of medical devices to reduce the surfaces thrombogenicity and decrease the number of microorganisms on the surface.Type: ApplicationFiled: June 27, 2012Publication date: December 27, 2012Applicant: Greatbatch Ltd.Inventors: Jan J. Lewandowski, Yubiao Liu
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Publication number: 20120245288Abstract: Comblike, surfactant polymers for changing the surface properties of biomaterials are provided. Such surfactant polymers comprise a polymeric backbone of repeating monomeric units having functional groups for coupling with side chains, a plurality of hydrophobic side chains linked to the backbone via the functional groups, and a plurality of hydrophilic side chains linked to said backbone via the functional groups. Medical devices coated with the surfactant polymers are also provided. The surfactant polymers may be used to decrease the thrombogenic properties, encapsulation, and bacterial colonization of medical devices.Type: ApplicationFiled: March 16, 2012Publication date: September 27, 2012Applicant: NANOMIMETICS, INC.Inventors: Jan J. LEWANDOWSKI, Yubiao LIU
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Publication number: 20080262614Abstract: Comblike, surfactant polymers for changing the surface properties of biomaterials are provided. Such surfactant polymers comprise a polymeric backbone of repeating monomeric units having functional groups for coupling with side chains, a plurality of hydrophobic side chains linked to the backbone via the functional groups, and a plurality of hydrophilic side chains linked to said backbone via the functional groups. Medical devices coated with the surfactant polymers are also provided. The surfactant polymers may be used to decrease the thrombogenic properties, encapsulation, and bacterial colonization of medical devices.Type: ApplicationFiled: April 4, 2008Publication date: October 23, 2008Applicant: NANOMIMETICS, INC.Inventors: Roger E. MARCHANT, Jan J. LEWANDOWSKI, Yubiao LIU