Patents by Inventor Paul Lessek

Paul Lessek 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: 7267845
    Abstract: The present invention provides a crosslinker for organic coatings having an amino resin core with substituents including more than one olefin functional group, a silicon-containing group, and at least one alkoxyalkyl or alkylol group. Coating compositions containing the crosslinker can be cured with radiation, especially ultraviolet radiation. The crosslinker can be included in a coating composition with one or more curable resins, applied onto a substrate and cured to form the cured coating of the invention.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: September 11, 2007
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Paul Lessek, Paul J. Harris
  • Patent number: 6812297
    Abstract: The present invention provides a crosslinker for organic coatings having an amino resin core with substituents including more than one olefin functional group, a silicon-containing group, and at least one alkoxyalkyl or alkylol group. Coating compositions containing the crosslinker can be cured with radiation, especially ultraviolet radiation. The crosslinker can be included in a coating composition with one or more curable resins, applied onto a substrate and cured to form the cured coating of the invention.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: November 2, 2004
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Paul Lessek, Paul J. Harris
  • Patent number: 6699943
    Abstract: The present invention is directed to a curable, water-based coating composition utilized in waterborne coating systems. The coating composition is the reaction product of a water-based copolymer prepared by free-radical polymerization, and a cross-linking agent. The copolymer is the reaction product of a first block and a second block. The first block is the reaction product of a first ethylenically unsaturated monomer, acrylic acid, and a second ethylenically unsaturated monomer, methyl methacrylate, as well as the reaction product of a vinylaromatic hydrocarbon monomer, diphenylethylene. The second block is the reaction product of a plurality of ethylenically unsaturated monomers, styrene, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, and carbonate-modified glycidyl methacrylate including a carbonate functional group that is subsequently converted into a carbamate functional group by ammonium hydroxide.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: March 2, 2004
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Paul Lessek, Wolfgang Bremser
  • Publication number: 20030220439
    Abstract: The present invention is directed to a curable, water-based coating composition utilized in waterborne coating systems. The coating composition is the reaction product of a water-based copolymer prepared by free-radical polymerization, and a cross-linking agent. The copolymer is the reaction product of a first block and a second block. The first block is the reaction product of a first ethylenically unsaturated monomer, acrylic acid, and a second ethylenically unsaturated monomer, methyl methacrylate, as well as the reaction product of a vinylaromatic hydrocarbon monomer, diphenylethylene. The second block is the reaction product of a plurality of ethylenically unsaturated monomers, styrene, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, and carbonate-modified glycidyl methacrylate including a carbonate functional group that is subsequently converted into a carbamate functional group by ammonium hydroxide.
    Type: Application
    Filed: December 22, 2000
    Publication date: November 27, 2003
    Inventors: Swaminathan Ramesh, Paul Lessek, Woflgang Bremser
  • Publication number: 20030018129
    Abstract: The present invention provides a crosslinker for organic coatings having an amino resin core with substituents including more than one olefin functional group, a silicon-containing group, and at least one alkoxyalkyl or alkylol group. Coating compositions containing the crosslinker can be cured with radiation, especially ultraviolet radiation. The crosslinker can be included in a coating composition with one or more curable resins, applied onto a substrate and cured to form the cured coating of the invention.
    Type: Application
    Filed: August 9, 2002
    Publication date: January 23, 2003
    Inventors: Swaminathan Ramesh, Paul Lessek, Paul J. Harris
  • Publication number: 20020122888
    Abstract: The present invention provides a crosslinker for organic coatings having an amino resin core with substituents including more than one olefin functional group, a silicon-containing group, and at least one alkoxyalkyl or alkylol group. Coating compositions containing the crosslinker can be cured with radiation, especially ultraviolet radiation. The crosslinker can be included in a coating composition with one or more curable resins, applied onto a substrate and cured to form the cured coating of the invention.
    Type: Application
    Filed: December 22, 2000
    Publication date: September 5, 2002
    Inventors: Swaminathan Ramesh, Paul J. Harris, Paul Lessek
  • Patent number: 6403709
    Abstract: The present invention is directed to a curable, water-based coating composition utilized in waterborne coating systems. The coating composition is the reaction product of a water-based copolymer prepared by free-radical polymerization, and a cross-linking agent. The copolymer is the reaction product of a first block and a second block. The first block is the reaction product of a first ethylenically unsaturated monomer, acrylic acid, and a second ethylenically unsaturated monomer, methyl methacrylate, as wells as the reaction product of a vinylaromatic hydrocarbon monomer, diphenylethylene. The second block is the reaction product of a plurality of ethylenically unsaturated monomers, styrene, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, and carbonate-modified glycidyl methacrylate including a carbonate functional group.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: June 11, 2002
    Assignee: BASF Corporation
    Inventors: Swaminathan Ramesh, Paul Lessek, Wolfgang Bremser
  • Publication number: 20020013414
    Abstract: The present invention is directed to a curable, water-based coating composition utilized in waterbome coating systems. The coating composition is the reaction product of a water-based copolymer prepared by free-radical polymerization, and a cross-linking agent. The copolymer is the reaction product of a first block and a second block. The first block is the reaction product of a first ethylenically unsaturated monomer, acrylic acid, and a second ethylenically unsaturated monomer, methyl methacrylate, as well as the reaction product of a vinylaromatic hydrocarbon monomer, diphenylethylene. The second block is the reaction product of a plurality of ethylenically unsaturated monomers, styrene, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, and carbonate-modified glycidyl methacrylate including a carbonate functional group.
    Type: Application
    Filed: December 22, 2000
    Publication date: January 31, 2002
    Inventors: Swaminathan Ramesh, Paul Lessek, Wolfgang Bremser
  • Publication number: 20020010254
    Abstract: A method, simulation, and apparatus are provided that are highly suitable for treatment of benign prostatic hyperplasia (BPH). A catheter is disclosed that includes a small diameter disk loaded monopole antenna surrounded by fusion material having a high heat of fusion and a melting point preferably at or near body temperature. Microwaves from the antenna heat prostatic tissue to promote necrosing of the prostatic tissue that relieves the pressure of the prostatic tissue against the urethra as the body reabsorbs the necrosed or dead tissue. The fusion material keeps the urethra cool by means of the heat of fusion of the fusion material. This prevents damage to the urethra while the prostatic tissue is necrosed. A computer simulation is provided that can be used to predict the resulting temperature profile produced in the prostatic tissue.
    Type: Application
    Filed: December 22, 2000
    Publication date: January 24, 2002
    Inventors: Swaminathan Ramesh, Paul Lessek, Wolfgang Bremser
  • Patent number: 5552497
    Abstract: A method of preparing a carbamate-functional acrylic polymer is described, comprising the steps of:(A) preparing a mixture comprising:(1) one or more acrylic monomers comprising hydroxy-functional groups or groups that can be converted to hydroxy functional groups,(2) optionally, one or more other addition polymerizable monomers, and(3) a carbamate compound, and(B) heating said mixture in the presence of a free radical initiator and an esterification catalyst, thereby forming a carbamate-functional acrylic polymer.
    Type: Grant
    Filed: December 29, 1994
    Date of Patent: September 3, 1996
    Assignee: BASF Corporation
    Inventors: Robert J. Taylor, John W. Rehfuss, Joseph Borst, Paul Lessek, Donald L. St. Aubin