Patents by Inventor Stephen B. Roscoe

Stephen B. Roscoe 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: 12123048
    Abstract: A self-contained biological sterilization indicator comprises: a housing; bacterial spores comprising, and/or capable of producing, an enzyme capable of catalyzing cleavage of an enzyme substrate; and a frangible container containing a composition, wherein the composition comprises the enzyme substrate, wherein if the frangible container is broken the composition will contact the bacterial spores to form a mixture having an initial pH in the range from 6.0 to 9.0. The enzyme substrate comprises a fluorinated 4?-alkylumbelliferyl ?-D-glucopyranoside represented by the structural formula (I) wherein one of R1 and R2 is F and the other is H, and R3 is an alkyl group having from 1 to 12 carbon atoms. A biological sterilization indicator comprising a kit containing isolated components comprising (i) bacterial spores comprising, and/or capable of producing, an enzyme capable of catalyzing cleavage of the enzyme substrate and a method of assessing efficacy of a sterilization process are also disclosed.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: October 22, 2024
    Assignee: Solventum Intellectual Property Company
    Inventors: Tonya D. Bonilla, Stephen B. Roscoe, George W. Griesgraber
  • Publication number: 20240307577
    Abstract: A chlorinated 4?-alkylumbelliferyl ?-D-glucopy-ranoside represented by the structural formula (I) One of R1 and R2 is Cl and the other is H. R3 represents an alkyl group having 1 to 12 carbon atoms. A method of assessing efficacy of a sterilization process including the same is also disclosed.
    Type: Application
    Filed: July 18, 2022
    Publication date: September 19, 2024
    Inventors: Stephen B. Roscoe, George W. Griesgraber, Tonya D. Bonilla, Giuseppe M. Bommarito, Wensheng Xia, Jeffrey M. Flynn
  • Patent number: 12064730
    Abstract: Articles with covalently attached thiocarbonylthio-containing groups are provided. More specifically, the articles include a solid polymeric substrate with a plurality of thiocarbonylthio-containing groups covalently attached directly to a carbon atom in a polymeric backbone of the solid polymeric substrate. Methods of making the articles with covalently attached thiocarbonylthio-containing are provided. Additionally, methods of using these articles to generate further articles with covalently attached polymeric chains are provided.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: August 20, 2024
    Assignee: Solventum Intellectual Properties Company
    Inventors: Jerald K. Rasmussen, Stephen B. Roscoe, Babu N. Gaddam, George W. Griesgraber, Daniel J. O'Neal, Eli P. Narveson
  • Patent number: 12023393
    Abstract: A polymerizable compound is represented by the formula (I). Each R1 independently represents a monovalent group having from 3 to 12 carbon atoms that comprises at least one of an epoxy group, an acryl group, or a methacryl group. Each R2 independently represents H, F, Cl, Br, C1-C12 alkyl, C2-C3 carbonylalkyl, or C2-C5 carboalkoxy. Each R3 independently represents H, F, Cl, Br, C1-C12 alkyl, C2-C3 carbonylalkyl, or C2-C5 carboalkoxy. Each n is independently 0, 1, 2, 3, or 4. Curable compositions including the polymerizable compound are also disclosed.
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: July 2, 2024
    Assignee: Solventum Intellectual Properties Company
    Inventors: Stephen B. Roscoe, Paul J. Homnick, Ahmed S. Abuelyaman
  • Publication number: 20240208990
    Abstract: A spiro-compound represented by the formula Each Z independently represents CH2 or a direct bond, wherein at least one Z represents a direct bond. Each R1 independently represents H, C1-C6 alkyl, hydroxyl, or a halogen. Each R2 independently represents H or a monovalent organic group having from 1 to 36 carbon atoms. Each R3 independently represents H, C1-C6 alkyl, or halogen. Curable compositions including some of the same are also disclosed.
    Type: Application
    Filed: April 4, 2022
    Publication date: June 27, 2024
    Inventors: Stephen B. Roscoe, Paul J. Homnick, Ahmed S. Abuelyaman
  • Publication number: 20240122815
    Abstract: A polymerizable compound is represented by the formula (I). Each R1 independently represents a monovalent group having from 3 to 12 carbon atoms that comprises at least one of an epoxy group, an acryl group, or a methacryl group. Each R2 independently represents H, F, Cl, Br, C1-C12 alkyl, C2-C3 carbonylalkyl, or C2-C5 carboalkoxy. Each R3 independently represents C H, F, Cl, Br, C1-C12 alkyl, C2-C3 carbonylalkyl, or C2-C5 carboalkoxy. Each n is independently 0, 1, 2, 3, or 4. Curable compositions including the polymerizable compound are also disclosed.
    Type: Application
    Filed: February 3, 2022
    Publication date: April 18, 2024
    Inventors: Stephen B. Roscoe, Paul J. Homnick, Ahmed S. Abuelyaman
  • Patent number: 11492460
    Abstract: Controlled radical initiators, reaction mixtures containing the controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and articles containing the polymeric materials, the crosslinkable compositions, or the crosslinked compositions are provided. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a single carbon between the two dithiocarbamate or dithiocarbonate groups. Also attached to that single carbon is a ketone group.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: November 8, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Kevin M. Lewandowski, Stephen B. Roscoe, Babu N. Gaddam, Bryan T. Whiting, John L. Battiste, George W. Griesgraber
  • Publication number: 20220334108
    Abstract: A composition and method of detecting an analyte in a sample using the composition, the composition including: a liquid that includes water; a plurality of first hollow glass bubbles in the liquid; a plurality of covalently attached first affinity groups that are covalently attached to at least some of the plurality of first hollow glass bubbles; and a plurality of first detector compound molecules not covalently bonded to the plurality of first hollow glass bubbles; wherein the first detector compound molecules include a first detectable group that is detected at a first wavelength; and wherein the first hollow glass bubbles have: a density of less than 0.60 gram/mole; a span of less than 1.0; and a plurality of covalently attached first affinity groups.
    Type: Application
    Filed: September 24, 2020
    Publication date: October 20, 2022
    Inventors: Frederica Sgolastra, Stephen B. Roscoe, Daniel M. Dohmeier, Masayuki Nakamura, Catherine A. Bothof, Deniz Yuksel Yurt, David D. Johnson, Kyle A. Kalstabakken, Minghua Dai, Myungchan Kang, Neil Percy, Leslie M. Horton, Stephen M. Kennedy
  • Publication number: 20220281908
    Abstract: A self-contained biological sterilization indicator comprises: a housing; bacterial spores comprising, and/or capable of producing, an enzyme capable of catalyzing cleavage of an enzyme substrate; and a frangible container containing a composition, wherein the composition comprises the enzyme substrate, wherein if the frangible container is broken the composition will contact the bacterial spores to form a mixture having an initial pH in the range from 6.0 to 9.0. The enzyme substrate comprises a fluorinated 4?-alkylumbelliferyl ?-D-glucopyranoside represented by the structural formula (I), wherein R is an alkyl group having from 1 to 12 carbon atoms. A biological sterilization indicator comprising a kit containing isolated components comprising (i) bacterial spores comprising, and/or capable of producing, an enzyme capable of catalyzing cleavage of the enzyme substrate and a method of assessing efficacy of a sterilization process are also disclosed.
    Type: Application
    Filed: September 4, 2020
    Publication date: September 8, 2022
    Inventors: Stephen B. Roscoe, Tonya D. Bonilla, George W. Griesgraber
  • Patent number: 11390722
    Abstract: First articles with covalently attached thiocarbonylthio-containing groups are provided. More specifically, the first articles are a functionalized substrate that contains a solid polymeric substrate with a plurality of thiocarbonylthio-containing groups covalently attached directly to carbon atoms in a polymeric backbone of the solid polymeric substrate. Methods of making the first articles with covalently attached thiocarbonylthio-containing groups are provided. Additionally, second articles and methods of using the first articles to generate second articles with covalently attached polymeric chains are provided.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: July 19, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Jerald K. Rasmussen, Stephen B. Roscoe, Babu N. Gaddam, George W. Griesgraber, Daniel J. O'Neal, Eli Narveson
  • Patent number: 11319461
    Abstract: Controlled radical initiators, reaction mixtures containing the controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and various articles are provided. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a carbonyl group between the two dithiocarbamate or dithiocarbonate groups.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: May 3, 2022
    Assignee: 3M Innovative Properties Company
    Inventors: Kevin M. Lewandowski, Stephen B. Roscoe, Babu N. Gaddam, Bryan T. Whiting, John L. Battiste
  • Publication number: 20220017939
    Abstract: A self-contained biological sterilization indicator comprises: a housing; bacterial spores comprising, and/or capable of producing, an enzyme capable of catalyzing cleavage of an enzyme substrate; and a frangible container containing a composition, wherein the composition comprises the enzyme substrate, wherein if the frangible container is broken the composition will contact the bacterial spores to form a mixture having an initial pH in the range from 6.0 to 9.0. The enzyme substrate comprises a fluorinated 4?-alkylumbelliferyl ?-D-glucopyranoside represented by the structural formula (I) wherein one of R1 and R2 is F and the other is H, and R3 is an alkyl group having from 1 to 12 carbon atoms. A biological sterilization indicator comprising a kit containing isolated components comprising (i) bacterial spores comprising, and/or capable of producing, an enzyme capable of catalyzing cleavage of the enzyme substrate and a method of assessing efficacy of a sterilization process are also disclosed.
    Type: Application
    Filed: December 3, 2019
    Publication date: January 20, 2022
    Inventors: Tonya D. Bonilla, Stephen B. Roscoe, George W. Griesgraber
  • Publication number: 20210101867
    Abstract: Controlled radical initiators, reaction mixtures containing the controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and various articles are provided. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a carbonyl group between the two dithiocarbamate or dithiocarbonate groups.
    Type: Application
    Filed: February 13, 2019
    Publication date: April 8, 2021
    Inventors: Kevin M. Lewandowski, Stephen B. Roscoe, Babu N. Gaddam, Bryan T. Whiting, John L. Battiste
  • Publication number: 20210095097
    Abstract: Controlled radical initiators, reaction mixtures containing the controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and articles containing the polymeric materials, the crosslinkable compositions, or the crosslinked compositions are provided. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a single carbon between the two dithiocarbamate or dithiocarbonate groups. Also attached to that single carbon is a ketone group.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 1, 2021
    Inventors: Kevin M. Lewandowski, Stephen B. Roscoe, Babu N. Gaddam, Bryan T. Whiting, John L. Battiste, George W. Griesgraber
  • Publication number: 20210095088
    Abstract: First articles with covalently attached thiocarbonylthio-containing groups are provided. More specifically, the first articles are a functionalized substrate that contains a solid polymeric substrate with a plurality of thiocarbonylthio-containing groups covalently attached directly to carbon atoms in a polymeric backbone of the solid polymeric substrate. Methods of making the first articles with covalently attached thiocarbonylthio-containing groups are provided. Additionally, second articles and methods of using the first articles to generate second articles with covalently attached polymeric chains are provided.
    Type: Application
    Filed: December 14, 2018
    Publication date: April 1, 2021
    Inventors: Jerald K. Rasmussen, Stephen B. Roscoe, Babu N. Gaddam, George W. Griesgraber, Daniel J. O'Neal, Eli Narveson
  • Patent number: 10941234
    Abstract: Controlled radical initiators that are ketone-containing dithiocarbamate or ketone-containing dithiocarbonate compounds are used to form polymeric materials that have a single polymeric block or multiple polymeric blocks. Reaction mixtures containing controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and articles containing the polymeric materials, the crosslinkable compositions, or the crosslinked compositions are provided.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: March 9, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Kevin M. Lewandowski, Stephen B. Roscoe, Babu N. Gaddam, Bryan T. Whiting, John L. Battiste, George W. Griesgraber
  • Patent number: 10913807
    Abstract: Crosslinkable polymeric materials, crosslinked polymeric materials, articles containing the crosslinkable polymeric materials or crosslinked polymeric materials, and methods of making the articles and various compositions are provided. More particularly, the crosslinkable composition contains a) a first polymeric material, which has terminal dithiocarbamate or dithiocarbonate groups, b) a crosslinking composition containing a chlorinated triazine crosslinking agent and/or a crosslinking monomer having two or more ethylenically unsaturated groups, and c) a thixotropic agent containing metal oxide particles. The crosslinkable composition may be printable or dispensed. In some embodiments, the crosslinked composition is a pressure-sensitive adhesive.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: February 9, 2021
    Assignee: 3M Innovative Properties Company
    Inventors: Serkan Yurt, Stephen B. Roscoe, George W. Griesgraber, Babu N. Gaddam, Kevin M. Lewandowski, Bryan T. Whiting, Haeen Sykora, Aaron T. Hedegaard, Jayshree Seth, Janet A. Venne
  • Publication number: 20200369820
    Abstract: Controlled radical initiators that are ketone-containing dithiocarbamate or ketone-containing dithiocarbonate compounds are used to form polymeric materials that have a single polymeric block or multiple polymeric blocks. Reaction mixtures containing controlled radical initiators and various ethylenically unsaturated monomers, polymeric materials formed from the reaction mixtures, crosslinkable compositions containing the polymeric materials, crosslinked compositions formed from the crosslinkable compositions, and articles containing the polymeric materials, the crosslinkable compositions, or the crosslinked compositions are provided.
    Type: Application
    Filed: February 13, 2019
    Publication date: November 26, 2020
    Inventors: Kevin M. Lewandowski, Stephen B. Roscoe, Babu N. Gaddam, Bryan T. Whiting, John L. Battiste, George W. Griesgraber
  • Publication number: 20200368694
    Abstract: Articles with covalently attached thiocarbonylthio-containing groups are provided. More specifically, the articles include a solid polymeric substrate with a plurality of thiocarbonylthio-containing groups covalently attached directly to a carbon atom in a polymeric backbone of the solid polymeric substrate. Methods of making the articles with covalently attached thiocarbonylthio-containing are provided. Additionally, methods of using these articles to generate further articles with covalently attached polymeric chains are provided.
    Type: Application
    Filed: December 14, 2018
    Publication date: November 26, 2020
    Inventors: Jerald K. Rasmussen, Stephen B. Roscoe, Babu N. Gaddam, George W. Griesgraber, Daniel J. O'Neal, Eli P. Narveson
  • Patent number: 10836934
    Abstract: Silicone-based elastomeric materials, articles containing the silicone-based elastomeric materials, reaction mixtures used to form the silicone-based elastomeric materials, and methods of making the silicone-based elastomeric materials are described. The silicone-based elastomeric materials are prepared by polymerizing silicone compounds having at least two ethylenically unsaturated groups in the presence of actinic radiation and a controlled radical initiator. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a single carbon between the two dithiocarbamate or dithiocarbonate groups. The silicone-based elastomeric materials typically have improved mechanical properties compared to silicone-based elastomeric materials formed by free radical polymerization reactions in the presence of conventional photoinitiators.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: November 17, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Jitendra S. Rathore, Babu N. Gaddam, George W. Griesgraber, Kevin M. Lewandowski, Stephen B. Roscoe