Patents by Inventor Kevin Rodney Lassila

Kevin Rodney Lassila 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).

  • Publication number: 20230278044
    Abstract: A substrate for use in an aqueous slurry has a polymeric coating to provide a compliant and sticky surface. The polymer coating has a chemical to render the surface hydrophobic so as to attract hydrophobic or hydrophobized mineral particles in the slurry. The surface has a surface roughness structure in the nano-scale to micro-scale range. The substrate can take the form of a conveyor belt, a bead, a mesh, an impeller, a filter or a flat surface. The substrate can also be an open-cell foam. The polymeric coating can be modified with tackifiers; plasticizers; crosslinking agents; chain transfer agents; chain extenders; adhesion promoters; aryl or alky copolymers; fluorinated copolymers and/or additives; hydrophobicizing agents such as hexamethyldisilazane; inorganic particles such as silica, hydrophobic silica, and/or fumed hydrophobic silica; MQ resin; and/or other additives to control and modify the properties of the polymer.
    Type: Application
    Filed: February 24, 2023
    Publication date: September 7, 2023
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Paul DOLAN, Michael Stephen RYAN, Michael D. COPPOLA, Kevin Rodney LASSILA, Allison K. GREENE
  • Publication number: 20210379603
    Abstract: An engineered collection medium for use in mineral separation is described. The engineered collection medium has a solid phase body configured with a three-dimensional open-cell structure like foam or sponge to provide collection surfaces. The three-dimensional surface structure is made of a hydrophobic material which is a reaction product of isocyanate and polyol promotes the attraction of mineral particles to the collection surfaces as a hydrophobic foam. The hydrophobic foam can be in the form of a cube, sphere, or sheet and can be used in a filter or conveyor belt in a processor.
    Type: Application
    Filed: February 7, 2019
    Publication date: December 9, 2021
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Francis DIDDEN, Christian V. O'KEEFE, Douglas H. ADAMSON, Paul DOLAN, Timothy J. BAILEY, Michael Stephen RYAN, Weiguo HUANG, Kevin Rodney LASSILA, Michael D. COPPOLA, Allison K. GREENE
  • Publication number: 20200406291
    Abstract: A substrate for use in an aqueous slurry has a polymeric coating to provide a compliant and sticky surface. The polymer coating has a chemical to render the surface hydrophobic so as to attract hydrophobic or hydrophobized mineral particles in the slurry. The substrate can take the form of a conveyor belt, a bead, a mesh, an impeller, a filter or a flat surface. The substrate can also be an open-cell foam. The polymeric coating can be modified with tackifiers; plasticizers; crosslinking agents; chain transfer agents; chain extenders; adhesion promoters; aryl or alky copolymers; fluorinated copolymers and/or additives; hydrophobizing agents such as hexamethyldisilazane; inorganic particles such as silica, hydrophobic silica, and/or fumed hydrophobic silica; MQ resin; and/or other additives to control and modify the properties of the polymer.
    Type: Application
    Filed: February 28, 2018
    Publication date: December 31, 2020
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Paul DOLAN, Michael Stephen RYAN, Timothy J. BAILEY, Kirk JOHNSON, Patrick TUXBURY, Kevin Rodney LASSILA, Michael D. COPPOLA, Allison K. GREENE
  • Publication number: 20200070074
    Abstract: A substrate for use in an aqueous slurry has a polymeric coating to provide a compliant and sticky surface. The polymer coating has a chemical to render the surface hydrophobic so as to attract hydrophobic or hydrophobized mineral particles in the slurry. The substrate can take the form of a conveyor belt, a bead, a mesh, an impeller, a filter or a flat surface. The substrate can also be an open-cell foam. The polymeric coating can be modified with tackifiers; plasticizers; crosslinking agents; chain transfer agents; chain extenders; adhesion promoters; aryl or alky copolymers; fluorinated copolymers and/or additives; hydrophobicizing agents such as hexamethyldisilazane; inorganic particles such as silica, hydrophobic silica, and/or fumed hydrophobic silica; MQ resin; and/or other additives to control and modify the properties of the polymer.
    Type: Application
    Filed: November 2, 2017
    Publication date: March 5, 2020
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Paul DOLAN, Michael RYAN, Michael D. COPPOLA, Kevin Rodney LASSILA, Allison K. GREENE
  • Publication number: 20200030819
    Abstract: A substrate for use in an aqueous slurry has a polymeric coating to provide a compliant and sticky surface. The polymer coating has a chemical to render the surface hydrophobic so as to attract hydrophobic or hydrophobized mineral particles in the slurry. The surface has a surface roughness structure in the nano-scale to micro-scale range. The substrate can take the form of a conveyor belt, a bead, a mesh, an impeller, a filter or a flat surface. The substrate can also be an open-cell foam. The polymeric coating can be modified with tackifiers; plasticizers; crosslinking agents; chain transfer agents; chain extenders; adhesion promoters; aryl or alky copolymers; fluorinated copolymers and/or additives; hydrophobicizing agents such as hexamethyldisilazane; inorganic particles such as silica, hydrophobic silica, and/or fumed hydrophobic silica; MQ resin; and/or other additives to control and modify the properties of the polymer.
    Type: Application
    Filed: March 1, 2018
    Publication date: January 30, 2020
    Inventors: Paul J. ROTHMAN, Mark R. FERNALD, Paul DOLAN, Michael Stephen RYAN, Michael D. COPPOLA, Kevin Rodney LASSILA, Allison K. GREENE
  • Patent number: 7476766
    Abstract: Compounds according to formula (I) wherein Z is S, SO, or SO2, may be prepared by a process that includes charging to a reactor hydrogen sulfide and an alkyl glycidyl ether according to formula (III), in the presence of a base. The compounds may also be prepared by contacting an alkoxychlorohydrin according to formula (II) with a sulfide source.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: January 13, 2009
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Andrew Wilson Wang, Kevin Rodney Lassila, Michael Edward Ford, Joseph Richard Krock, Nancy Mary Martin, Ge Grace Zhang
  • Patent number: 7348300
    Abstract: Disclosed herein are process solutions, which may be aqueous-based, non-aqueous-based, and combinations thereof, that contain at least one alkoxylated acetylenic diol surfactant. In one aspect, the process solution comprises water and an alkoxylated acetylenic diol surfactant having the formula A: where r and t are 1 or 2, (n+m) is 1 to 30 and (p+q) is 1 to 30.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: March 25, 2008
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Rodney Lassila, Paula Ann Uhrin, Peng Zhang, Danielle Megan King Curzi, Leslie Cox Barber, Brenda Faye Ross
  • Patent number: 7230138
    Abstract: Compounds according to formula (I) wherein Z is S, SO, or SO2, may be prepared by a process that includes charging to a reactor hydrogen sulfide and an alkyl glycidyl ether according to formula (III), in the presence of a base.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: June 12, 2007
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Andrew Wilson Wang, Kevin Rodney Lassila, Michael Edward Ford, Joseph Richard Krock, Nancy Mary Martin, Ge Grace Zhang
  • Patent number: 6969738
    Abstract: This invention provides water-based compositions, particularly coating, ink, fountain solution, adhesive and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain malate diester compounds of the structure where R1 and R2 are C3 to C6 alkyl groups.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: November 29, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Rodney Lassila, Caroline Sassano Slone
  • Patent number: 6924315
    Abstract: The present invention provides compounds useful as surfactants having formula (1), including isomers thereof: wherein a and b are integers independently selected from about 3 to about 6; x is an integer from about 1 to about 12; (m+n) is from about 1 to about 4; the R1 groups are independently selected from the group consisting of linear, cyclic, and branched alkyl, alkenyl, aryl, and alkylaryl groups having from about C3 to about C30 atoms; and when (m+n) is equal to or greater than 2, each R1 may be independently R2 or R3, wherein R2 and R3 are independently selected from the group consisting of linear, cyclic, and branched alkyl, alkenyl, aryl, and alkylaryl groups having from about C3 to about C30 atoms. The invention also provides a method for reducing surface tension in a waterborne composition or an industrial process by the incorporation of a surfactant having formula (1) and an aqueous composition comprising a surfactant having formula (1).
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: August 2, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Christine Peck Kretz, Michael Edward Ford, Kevin Rodney Lassila
  • Patent number: 6864395
    Abstract: This invention provides water-based compositions, particularly coating, ink, fountain solution and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of an acetylenic diol ethylene oxide/propylene oxide adduct of the structure: where r and t are 1 or 2, (n+m) is 1 to 30 and (p+q) is 1 to 30. Also disclosed is a method for making random and block EO/PO adducts of acetylenic diols by reacting an acetylenic diol with EO and/or PO in the presence of a trialkylamine or Lewis acid.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: March 8, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Rodney Lassila, Paula Ann Uhrin, Joel Schwartz
  • Publication number: 20040180970
    Abstract: The present invention provides compounds useful as surfactants having formula (1), including isomers thereof: 1
    Type: Application
    Filed: March 13, 2003
    Publication date: September 16, 2004
    Inventors: Christine Peck Kretz, Michael Edward Ford, Kevin Rodney Lassila
  • Patent number: 6746623
    Abstract: The present invention pertains to a method for controlling the foaming of a waterborne composition or in an industrial process utilizing a waterborne composition by the incorporation of a foam controlling agent in an amount effective for controlling foam. The method comprises utilizing as the foam controlling agent an alkyl glycidyl ether-capped diamine compound of the formula: L is a linker group comprising a linear, branched, or cyclic alkyl group having from 2 to about 6 carbon atoms or an alkyl ether group having from about 4 to about 8 carbon atoms. R is independently selected from hydrogen or —CH2CHOHCH2OR′. R′ is an alkyl group having from about 4 to about 22 carbon atoms. The compound generates an initial foam height at least 30% less than a 0.1 wt % aqueous solution of dioctyl sodium sulfosuccinate (DOSS), when added at 0.1 wt % to the aqueous DOSS solution. The present invention also pertains to an aqueous composition comprising the foam controlling agent.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: June 8, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Caroline Sassano Slone, Kevin Rodney Lassila
  • Patent number: 6717019
    Abstract: The present invention pertains to glycidyl ether-capped acetylenic diol ethoxylates having a structure according to the formula: wherein R1 is hydrogen or a linear, branched, or cyclic alkyl group having from 1 to about 6 carbon atoms; R2 is a linear, branched, or cyclic alkyl group having from 1 to about 12 carbon atoms; R3=—CH2OR4; R4 is a linear, branched, or cyclic alkyl, alkenyl, aryl, or aralkyl group having from 2 to about 30 carbon atoms; (n+m) is from 1 to about 100; and (p+q) is from 0.5 to about 5 and its use to reduce equilibrium and dynamic surface tension in water-based compositions containing an organic or inorganic compound, particularly aqueous organic coating, ink, acid gas scrubbing and agricultural compositions.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: April 6, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventor: Kevin Rodney Lassila
  • Publication number: 20030229164
    Abstract: This invention provides water-based compositions, particularly coating, ink, fountain solution, adhesive, agricultural and electronics cleaning compositions, manifesting reduced equilibrium surface tension by the incorporation of a surface tension reducing amount of an N-alkylimide of tartaric acid and/or an N-alkylimide of malic acid of the following structures, respectively: 1
    Type: Application
    Filed: June 10, 2002
    Publication date: December 11, 2003
    Inventors: Ingrid Kristine Meier, Kevin Rodney Lassila, Caroline Sassano Slone
  • Patent number: 6656977
    Abstract: A method for controlling the foaming of an aqueous organic compound-containing composition by the incorporation of a foam controlling amount of a compound of the formula: where n and m are 2 or 3, x is 1-6, R′ is a C4 to C22 alkyl group, where R′ is a C4 to C22 alkyl group, the compound generating an initial foam height at least 30% less than a 0.1 wt % aqueous solution of dioctyl sodium sulfosuccinate (DOSS) when added at 0.1 wt % to the DOSS solution.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: December 2, 2003
    Assignee: Air Products and Chemical, Inc.
    Inventors: Caroline Sassano Slone, Kevin Rodney Lassila
  • Publication number: 20030158448
    Abstract: The present invention pertains to glycidyl ether-capped acetylenic diol ethoxylates having a structure according to the formula: 1
    Type: Application
    Filed: January 30, 2002
    Publication date: August 21, 2003
    Inventor: Kevin Rodney Lassila
  • Publication number: 20030153631
    Abstract: The present invention pertains to a method for controlling the foaming of a waterborne composition or in an industrial process utilizing a waterborne composition by the incorporation of a foam controlling agent in an amount effective for controlling foam.
    Type: Application
    Filed: February 1, 2002
    Publication date: August 14, 2003
    Inventors: Caroline Sassano Slone, Kevin Rodney Lassila
  • Patent number: 6605145
    Abstract: This invention provides water-based compositions, particularly coating, ink, and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain alkylformamide compounds of the structure where R is a C5 to C11 alkyl group.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: August 12, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kevin Rodney Lassila, John Anthony Marsella
  • Patent number: 6585814
    Abstract: This invention provides water-based compositions which are essentially free of hydrocarbon solvents, particularly coating, ink, fountain solution, adhesive and agricultural compositions, manifesting reduced equilibrium and dynamic surface tension by the incorporation of a surface tension reducing amount of certain tartrate diester compounds of the structure: where R1 and R2 are C4 to C6 alkyl groups.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: July 1, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Caroline Sassano Slone, Kevin Rodney Lassila