Patents by Inventor Steven J. Hamrock

Steven J. Hamrock 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: 7060756
    Abstract: A method is provided for obtaining crosslinked polymers having pendent sulfonic acid groups by crosslinking through the sulfonic acid groups or their precursors with aromatic crosslinkers or aromatic pendent crosslinking groups to form aromatic sulfones. Such crosslinked polymers may be used to make polymer electrolyte membranes (PEM's) that may be used in electrolytic cells such as fuel cells.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: June 13, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Naiyong Jing, Michael A. Yandrasits, Steven J. Hamrock
  • Patent number: 6833412
    Abstract: Methods are provided to make acid functional fluoropolymers by: a) dehydrofluorinating a starting fluoropolymer with a dehydrofluorinating agent to form an unsaturated fluoropolymer; b) adding an acidifiable nucleophilic functionalizing agent to a double bond of the unsaturated fluoropolymer; and c) acidifying the added acidifiable function. Acid functional fluoropolymers and ion conducting membranes thereof are also provided, including acid functional fluoropolymer having pendent groups according to the formula: —X—Ar—An, wherein X is selected from O, S or NR, where R is selected from H and C1-C30 alkyl or aryl, which are optionally substituted, wherein Ar is a C6-C30 aromatic group, which is optionally substituted, wherein A is an acidic function or salt thereof, wherein a can be independently chosen to be 1, 2 or 3.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: December 21, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Naiyong Jing, Shane S. Mao, L. Charles Hardy
  • Patent number: 6780472
    Abstract: A monomer useful in the formulation of a radiation curable coatable composition comprises (a) polyfunctional isocyanurate having at least three terminal reactive groups reacted with (b) hydroxyalkyl acrylate and (c) tertiary amine alcohol in a molar ratio of a:b:c of about 1:1-2.5:0.5-2, wherein b+c is at least 3 and no greater than the total number of terminal reactive groups of (a). The monomer is included in a radiation curable coatable composition suitable for use as a floor finish and in a floor finishing system comprising the foregoing coatable composition with a primer. A method for the treatment of a substrate using the floor finish and the floor finishing system is also described.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: August 24, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits
  • Publication number: 20030087981
    Abstract: A monomer useful in the formulation of a radiation curable coatable composition comprises (a) polyfunctional isocyanurate having at least three terminal reactive groups reacted with (b) hydroxyalkyl acrylate and (c) tertiary amine alcohol in a molar ratio of a:b:c of about 1:1-2.5:0.5-2, wherein b+c is at least 3 and no greater than the total number of terminal reactive groups of (a). The monomer is included in a radiation curable coatable composition suitable for use as a floor finish and in a floor finishing system comprising the foregoing coatable composition with a primer. A method for the treatment of a substrate using the floor finish and the floor finishing system is also described.
    Type: Application
    Filed: December 19, 2001
    Publication date: May 8, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits
  • Publication number: 20030008191
    Abstract: Methods are provided to make acid functional fluoropolymers by: a) dehydrofluorinating a starting fluoropolymer with a dehydrofluorinating agent to form an unsaturated fluoropolymer; b) adding an acidifiable nucleophilic functionalizing agent to a double bond of the unsaturated fluoropolymer; and c) acidifying the added acidifiable function. Acid functional fluoropolymers and ion conducting membranes thereof are also provided, including acid functional fluoropolymer having pendent groups according to the formula: —X—Ar—An, wherein X is selected from O, S or NR, where R is selected from H and C1-C30 alkyl or aryl, which are optionally substituted, wherein Ar is a C6-C30 aromatic group, which is optionally substituted, wherein A is an acidic function or salt thereof, wherein a can be independently chosen to be 1, 2 or 3.
    Type: Application
    Filed: July 15, 2002
    Publication date: January 9, 2003
    Applicant: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Naiyong Jing, Shane S. Mao, L. Charles Hardy
  • Patent number: 6423784
    Abstract: Methods are provided to make acid functional fluoropolymers by: a) dehydrofluorinating a starting fluoropolymer with a dehydrofluorinating agent to form an unsaturated fluoropolymer; b) adding an acidifiable nucleophilic functionalizing agent to a double bond of the unsaturated fluoropolymer; and c) acidifying the added acidifiable function. Acid functional fluoropolymers and ion conducting membranes thereof are also provided, including acid functional fluoropolymer having pendent groups according to the formula: —X—Ar—An, wherein X is selected from O, S or NR, where R is selected from H and C1-C30 alkyl or aryl, which are optionally substituted, wherein Ar is a C6-C30 aromatic group, which is optionally substituted, wherein A is an acidic function or salt thereof, wherein a can be independently chosen to be 1, 2 or 3.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: July 23, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Naiyong Jing, Shane S. Mao, L. Charles Hardy
  • Patent number: 6420607
    Abstract: Compositions containing conductivity enhancers, which are capable of being coated onto a substrate by means of electrostatic assistance. The compositions comprise one or more cationically polymerizable monomer(s), one or more cationic initiator(s), and one or more non-volatile conductivity enhancer(s) having anionic and cationic portions which are soluble in the monomer(s) and which do not interfere with cationic polymerization wherein the anionic portion is a non-coordinating carbon-containing anion. The compositions may further comprise one or more dissociation enhancing agent(s), oligomer(s) or polymer(s), preferably co-reactive, free-radically curable monomer(s), free-radical generating initiator(s), leveling agents, and other additives or adjuvants to impart specific properties to the polymerized composition.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: July 16, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Phat T. Pham
  • Patent number: 6316149
    Abstract: An electrolyte composition is featured that includes a solid, ionically conductive polymer, organically modified oxide particles that include organic groups covalently bonded to the oxide particles, and an alkali metal salt. The electrolyte composition is free of lithiated zeolite. The invention also features cells that incorporate the electrolyte composition.
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: November 13, 2001
    Assignees: Minnesota Mining and Manufacturing, Hydro-Quebec Corporation
    Inventors: James E. Garbe, Radoslav Atanasoski, Steven J. Hamrock, Dinh Ba Le
  • Patent number: 6197844
    Abstract: A monomer useful in the formulation of a radiation curable coatable composition comprises (a) polyfunctional isocyanurate having at least three terminal reactive groups reacted with (b) hydroxyalkyl acrylate and (c) tertiary amine alcohol in a molar ratio of a:b:c of about 1:1-2.5:0.5-2, wherein b+c is at least 3 and no greater than the total number of terminal reactive groups of (a). The monomer is included in a radiation curable coatable composition suitable for use as a floor finish and in a floor finishing system comprising the foregoing coatable composition with a primer. A method for the treatment of a substrate using the floor finish and the floor finishing system is also described.
    Type: Grant
    Filed: February 4, 1999
    Date of Patent: March 6, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Fidelis C. Onwumere, Bradford B. Wright, Michael A. Yandrasits
  • Patent number: 6090895
    Abstract: A method is provided for making crosslinked acidic polymers useful as ion conductive membranes, such as crosslinked sulfonated polyether ketones, sulfonated polysulfones, sulfonated polystyrenes, and other acidic polymers, by crosslinking with a species which generates an acidic functionality. The crosslinker preferably binds to acid functions by conversion of acid groups to imide functionality, which, due to the acidity of the N-H bonds therein, compensate for the acidity lost by the occupation of the acid groups and thus preserve membrane conductivity while contributing to membrane strength and resistance to swelling.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: July 18, 2000
    Assignee: 3M Innovative Properties Co.,
    Inventors: Shane S. Mao, Steven J. Hamrock, David A. Ylitalo
  • Patent number: 6063522
    Abstract: Battery electrolytes are described which include particular imide and methide conductive salts having mixed fluorocarbon and hydrocarbon groups. These salts exhibit excellent conductivity in electrolytes and are described as useful in electrochemical cells, such as lithium batteries.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: May 16, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Steven J. Hamrock, Phat T. Pham
  • Patent number: 5908663
    Abstract: A method for treating carpets is provided which obviates the need for scouring. In accordance with the method, an unscoured carpet is treated topically, and by means of a low wet pickup method, with a solution comprising particles of silica or a similar inorganic additive and a fluorochemical or other optional organic additive. Carpets treated in accordance with this method are found to have excellent soil resistance properties which do not decrease noticeably with subsequent wear or cleaning. Furthermore, since the method involves a low wet pickup, the required drying times are significantly reduced as compared to conventional aqueous bath immersion methods.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: June 1, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Shou-Lu G. Wang, Lori P. Engle, Steven J. Hamrock, Dong-Wei Zhu, Thomas E. Wood, Steven J. Martin
  • Patent number: 5888290
    Abstract: A fluorochemical treatment composition comprises (a) a sol comprising a colloidal dispersion of substantially discrete, substantially monodisperse in size, polymer-grafted, inorganic microparticles in liquid; and (b) at least one fluorochemical. The composition can be used to impart durable water and oil repellency, stain release, and dry soil resistance to a variety of substrates.
    Type: Grant
    Filed: May 24, 1996
    Date of Patent: March 30, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Lori P. Engle, Steven J. Hamrock, Mark J. Pellerite
  • Patent number: 5760126
    Abstract: Water-based coating compositions comprise an aqueous solution, emulsion, or dispersion of (a) a water-soluble or water-dispersible polymer or oligomer having at least one anionic moiety which is capable of reacting with an oxazoline or oxazine moiety; (b) a water-soluble or water-dispersible polymer or oligomer having at least one oxazoline or oxazine moiety; and (c) a sol comprising a colloidal dispersion of surface-modified, inorganic microparticles in liquid; at least one of the components (a), (b), and (c) further comprising at least one fluoroaliphatic moiety. The compositions can be used to form hard coatings having low surface energy and high abrasion resistance.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: June 2, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Lori P. Engle, Steven J. Hamrock, George G. I. Moore, Mark J. Pellerite, Dong-Wei Zhu
  • Patent number: 5514493
    Abstract: An electrolyte composition that includes a salt disposed in a matrix in which the salt has a formula selected from the group consisting of ##STR1## in which X.sup.- is --O.sup.-, --N.sup.- SO.sub.2 R.sub.f.sup.3, or ##STR2## Z is --CF.sub.2 --, --O--, --NR.sub.f.sup.8 --, or --SF.sub.4 --; R.sub.f.sup.1 and R.sub.f.sup.2, independently, are --CF.sub.3, --C.sub.m F.sub.2m+1, or --(CF.sub.2).sub.q --SO.sub.2 --X.sup.- M.sup.+ ; R.sub.f.sup.3, R.sub.f.sup.4, and R.sub.f.sup.5, independently, are --CF.sub.3, --C.sub.mf.sub.2m+1, --(CF.sub.2).sub.q --X.sup.- M.sup.+, ##STR3## R.sub.f.sup.8 is --CF.sub.3, --C.sub.m F.sub.2m+1, or --(CF.sub.2).sub.q --SO.sub.2 --X.sup.- M.sup.+ ; R.sub.f.sup.6 and R.sub.f.sup.7, independently, are perfluoroalkylene moieties having the formula --C.sub.r F.sub.2r ; n is 1-4; r is 1-4; m is 1-12; q is 1-4; and M.sup.+ is a counterion.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: May 7, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jennifer E. Waddell, William M. Lamanna, Larry J. Krause, George G. I. Moore, Steven J. Hamrock