Patents by Inventor Koshiro Kunii

Koshiro Kunii 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).

  • Alpha-alumina flakes
    Patent number: 11180659
    Abstract: A blended composition containing uncoated Al2O3 flakes having a thickness of ?500 nm and a D50-value of 15-30 ?m and a D90-value of 30-45 ?m, and/or coated Al2O3 flakes having a thickness of ?500 nm and a D50-value of 15-30 ?m and a D90-value of 30-45 ?m, which have been coated with at least one layer of a metal oxide, mixtures of at least two metal oxides, metal, metal sulphide, titanium suboxide, titanium oxynitride, FeO(OH), metal alloys and/or rare earth compounds, and their use in various formulations.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: November 23, 2021
    Assignee: Merck Patent GmbH
    Inventors: Ryuta Suzuki, Gerhard Pfaff, Sabine Schoen, Fumiko Sasaki, Satoru Kobayashi, Koshiro Kunii, Yuji Takenaka, Katsuhisa Nitta
  • ?-alumina flakes
    Patent number: 11142649
    Abstract: The present invention relates to alumina flakes having a defined thickness and particle size distribution and to their use in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations and as substrate for effect pigments. and organic dyes.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: October 12, 2021
    Assignee: Merck Patent GmbH
    Inventors: Ryuta Suzuki, Gerhard Pfaff, Sabine Schoen, Fumiko Sasaki, Satoru Kobayashi, Koshiro Kunii, Yuji Takenaka, Katsuhisa Nitta
  • LASER ADDITIVE AND ITS USE IN POLYMER MATERIALS
    Publication number: 20210222011
    Abstract: The present invention relates to pigments which comprise niobium-doped titanium dioxide as well as a layer encapsulating the niobium-doped titanium dioxide, to polymer materials containing same and to the use of said pigments as laser absorbing additive in products comprising at least one polymer material and said encapsulated niobium-doped titanium dioxide containing pigments.
    Type: Application
    Filed: May 13, 2019
    Publication date: July 22, 2021
    Applicant: Merck Patent GmbH
    Inventor: Koshiro KUNII
  • ALPHA-ALUMINA FLAKES
    Publication number: 20190330475
    Abstract: The present invention relates to alumina flakes having a defined thickness and particle size distribution and to their use in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations and as substrate for effect pigments. and organic dyes.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 31, 2019
    Applicant: Merck Patent GmbH
    Inventors: Ryuta SUZUKI, Gerhard PFAFF, Sabine SCHOEN, Fumiko SASAKI, Satoru KOBAYASHI, Koshiro KUNII, Yuji TAKENAKA, Katsuhisa NITTA
  • ?-alumina flakes
    Patent number: 10457812
    Abstract: Alpha-Alumina flakes having a particle thickness of 550-1000 nm, a D50-value of 15-30 ?m, a D90-value of 30-45 ?m and a D10-value of ?9.0 ?m. Use of the alumina flakes in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations. Also, use of the alumina flakes as a substrate for effect pigments and in organic dyes.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 29, 2019
    Assignee: Merck Patent GmbH
    Inventors: Ryuta Suzuki, Gerhard Pfaff, Sabine Schoen, Fumiko Sasaki, Satoru Kobayashi, Koshiro Kunii, Yuji Takenaka, Katsuhisa Nitta
  • ALPHA-ALUMINA FLAKES
    Publication number: 20190322871
    Abstract: The present invention relates to alumina flakes having a defined thickness and particle size distribution and to their use in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations and as substrate for effect pigments. and organic dyes.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 24, 2019
    Applicant: Merck Patent GmbH
    Inventors: Ryuta SUZUKI, Gerhard PFAFF, Sabine SCHOEN, Fumiko SASAKI, Satoru KOBAYASHI, Koshiro KUNII, Yuji TAKENAKA, Katsuhisa NITTA
  • ALPHA-ALUMINA FLAKES
    Publication number: 20140322534
    Abstract: The present invention relates to alumina flakes having a defined thickness and particle size distribution and to their use in varnishes, paints, automotive coatings printing inks, masterbatches, plastics and cosmetic formulations and as substrate for effect pigments. and organic dyes.
    Type: Application
    Filed: April 25, 2014
    Publication date: October 30, 2014
    Applicant: Merck Patent GmbH
    Inventors: Ryuta SUZUKI, Gerhard PFAFF, Sabine SCHOEN, Fumiko SASAKI, Satoru KOBAYASHI, Koshiro KUNII, Yuji TAKENAKA, Katsuhisa NITTA
  • Effect pigments with an outer protective coating comprising zinc oxide
    Patent number: 8821627
    Abstract: The present invention relates to effect pigments based on substrates having an outer coating comprising metal oxide, hydroxide and/or oxide hydrate and at least one organic coupling agent.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: September 2, 2014
    Assignee: Merck Patent GmbH
    Inventor: Koshiro Kunii
  • EFFECT PIGMENTS WITH AN OUTER PROTECTIVE COATING COMPRISING ZINC OXIDE
    Publication number: 20130213260
    Abstract: The present invention relates to effect pigments based on substrates having an outer coating comprising metal oxide, hydroxide and/or oxide hydrate and at least one organic coupling agent.
    Type: Application
    Filed: October 12, 2011
    Publication date: August 22, 2013
    Applicant: Merck Patent GmbH
    Inventor: Koshiro Kunii
  • Surface-treating agent, surface-treated plateletlike pigment and process for producting the same
    Patent number: 5873934
    Abstract: A surface-treating agent for use in an inorganic pigment in which a metallic oxide layer and/or a hydrated metallic oxide layer is formed on the surface of said pigment, characterized in that said surface-treating agent contains one or more compounds selected from the group consisting of (1) a polyglycidyl ether compound, (2) a polyglycidyl ester compound, and (3) a diglycidyl polysiloxane compound.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: February 23, 1999
    Assignee: Merck Patent Gesellschaft MIT Beschrankter Haftung
    Inventors: Koshiro Kunii, Yoshifumi Horie
  • Oxidized graphite flaky particles and pigments based thereon
    Patent number: 5228911
    Abstract: The invention relates to oxidized graphite flaky particles obtainableby oxidizing graphite flaky particles in an oxygen-containing atmosphere at 200.degree.-500.degree. C.,by suspending graphite flaky particles in aqueous medium and oxidizing them with a water-soluble oxidizing agent orby oxidizing graphite flaky particles in an oxygen-containing atmosphere, suspending these oxidized particles in an aqueous medium and oxidizing them further with a water-soluble oxidizing agent, and to pigments based thereon.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: July 20, 1993
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Koshiro Kunii, Katsuhisa Nitta, Kunimitsu Ohira