Patents by Inventor Ukiwo Onuoha

Ukiwo Onuoha 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: 11981605
    Abstract: A composition including: a first component A, includes: between 68 and 99.9 wt.-% of an aqueous dispersion of at least one polymer, the aqueous dispersion including the polymer with an amount of between 20 and 90 wt.-%; between 0 and 2 wt.-% of a nonionic or ionic dispersing agent; a second component B, includes: between 10 and 30 wt.-% of a nonionic, non-aqueous liquid carrier, between 0 and 20 wt.-% of calcium sulfate, between 10 and 89.9 wt.-% of at least one hydraulic binder, between 0 and 10 wt.-% of a thixotropy agent; wherein both components A and B are prepared and stored separately and mixed directly before application; and with the proviso that the first component A furthermore includes: between 0.1 and 15 wt.-% of a monovalent metal salt, and the second component B furthermore comprises: between 0.1 and 25 wt.-% of a polyamine.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: May 14, 2024
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Ukiwo Onuoha, Steffen Maier, Oscar Larsson
  • Publication number: 20210238095
    Abstract: A composition including: a first component A, includes: between 68 and 99.9 wt.-% of an aqueous dispersion of at least one polymer, the aqueous dispersion including the polymer with an amount of between 20 and 90 wt.-%; between 0 and 2 wt.-% of a nonionic or ionic dispersing agent; a second component B, includes: between 10 and 30 wt.-% of a nonionic, non-aqueous liquid carrier, between 0 and 20 wt.-% of calcium sulfate, between 10 and 89.9 wt.-% of at least one hydraulic binder, between 0 and 10 wt.-% of a thixotropy agent; wherein both components A and B are prepared and stored separately and mixed directly before application; and with the proviso that the first component A furthermore includes: between 0.1 and 15 wt.-% of a monovalent metal salt, and the second component B furthermore comprises: between 0.1 and 25 wt.-% of a polyamine.
    Type: Application
    Filed: May 3, 2018
    Publication date: August 5, 2021
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Ukiwo ONUOHA, Steffen MAIER, Oscar LARSSON
  • Patent number: 11060003
    Abstract: A water-based dispersion sealant composition, including an aqueous polymer dispersion including water and at least one water-dispersible polymer, at least one polyolefin oligomer, at least one hydrogenated mixture of alkanes, isoalkanes, and/or cycloalkanes with a boiling point of at least 150° C., and optionally at least one plasticizer having at least one ester or ether group, wherein the at least one polyolefin oligomer and the at least one hydrogenated mixture of alkanes, isoalkanes, and/or cycloalkanes with a boiling point of at least 150° C. are liquid at 23° C. and under standard pressure, wherein the at least one polyolefin oligomer is selected from polybutene and/or polyisobutylene, and wherein said at least one water-dispersible polymer is selected from poly(meth)acrylate polymers, styrene-(meth)acrylate copolymers, and vinyl-acetate-(meth)acrylate copolymers.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: July 13, 2021
    Assignee: SIKA TECHNOLOGY AG
    Inventors: Steffen Maier, Ukiwo Onuoha
  • Publication number: 20190292424
    Abstract: A water-based dispersion sealant composition, including an aqueous polymer dispersion including water and at least one water-dispersible polymer, at least one polyolefin oligomer, at least one hydrogenated mixture of alkanes, isoalkanes, and/or cycloalkanes with a boiling point of at least 150° C., and optionally at least one plasticizer having at least one ester or ether group, wherein the at least one polyolefin oligomer and the at least one hydrogenated mixture of alkanes, isoalkanes, and/or cycloalkanes with a boiling point of at least 150° C. are liquid at 23° C. and under standard pressure, wherein the at least one polyolefin oligomer is selected from polybutene and/or polyisobutylene, and wherein said at least one water-dispersible polymer is selected from poly(meth)acrylate polymers, styrene-(meth)acrylate copolymers, and vinyl-acetate-(meth)acrylate copolymers.
    Type: Application
    Filed: December 5, 2017
    Publication date: September 26, 2019
    Applicant: SIKA TECHNOLOGY AG
    Inventors: Steffen MAIER, Ukiwo ONUOHA
  • Patent number: 8357453
    Abstract: The invention relates to moisture-reactive hotmelt adhesive compositions which comprise at least one polyurethane prepolymer P1 being liquid at room temperature containing isocyanate groups and also at least one linear polyurethane P2 being solid at room temperature which comprises polycaprolactone segments, contains hydroxyl groups and has a melt viscosity of 100-300 Pa·s at 170° C. The compositions are notable in particular for a prolonged open time.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: January 22, 2013
    Assignee: Sika Technology AG
    Inventor: Ukiwo Onuoha
  • Publication number: 20090202837
    Abstract: The present invention relates to one-component moisture-curing compositions comprising at least one isocyanate-containing polyurethane polymer P which has a mean molecular weight of at least 4000 g/mol, and at least one polyaldimine ALD of the formula (I) or (II), where the content of isocyanate groups is at most 3.5% by weight, based on the sum of the isocyanate-containing constituents present in the composition. The compositions are suitable especially as sealants and are notable for good low-temperature performance.
    Type: Application
    Filed: March 13, 2007
    Publication date: August 13, 2009
    Applicant: Sika Technology AG
    Inventors: Ukiwo Onuoha, Urs Burckhardt
  • Publication number: 20090110937
    Abstract: The invention relates to moisture-reactive hotmelt adhesive compositions which comprise at least one polyurethane prepolymer P1 being liquid at room temperature containing isocyanate groups and also at least one linear polyurethane P2 being solid at room temperature which comprises polycaprolactone segments, contains hydroxyl groups and has a melt viscosity of 100-300 Pa·s at 170° C. The compositions are notable in particular for a prolonged open time.
    Type: Application
    Filed: June 29, 2007
    Publication date: April 30, 2009
    Applicant: SIKA TECHNOLOGY AG
    Inventor: Ukiwo Onuoha
  • Patent number: 6548593
    Abstract: New thixotropic agents for the use in cross-linking systems, in particular one-component adhesives and sealants, are described. The thixotropic agents have the advantage that on the one hand they cause only a minor or no increase in viscosity, and on the other hand they do not cause any blead out or migration, respectively. The thixotropic agents of the present invention are based on urea derivatives that usually are present in a concentration of 5 to 50 wt.-%, in particular of 15 to 30 wt.-%, in a preferably reactive carrier material. After the cross-linking of the system, the reactive carrier material is incorporated, preferably into the structure matrix, or interwoven with said structure matrix, respectively, such that it can not diffuse out of the cured material.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: April 15, 2003
    Assignee: Sika Schweiz AG
    Inventors: Peter W. Merz, Ukiwo Onuoha, Shingo Tsuno
  • Publication number: 20020007003
    Abstract: New thixotropic agents for the use in cross-linking systems, in particular one-component adhesives and sealants, are described. The thixotropic agents have the advantage that on the one hand they cause only a minor or no increase in viscosity, and on the other hand they do not cause any blead out or migration, respectively. The thixotropic agents of the present invention are based on urea derivatives that usually are present in a concentration of 5 to 50 wt.-%, in particular of 15 to 30 wt.-%, in a preferably reactive carrier material. After the cross-linking of the system, the reactive carrier material is incorporated, preferably into the structure matrix, or interwoven with said structure matrix, respectively, such that it can not diffuse out of the cured material.
    Type: Application
    Filed: May 2, 2001
    Publication date: January 17, 2002
    Inventors: Peter W. Merz, Ukiwo Onuoha, Shingo Tsuno