Patents by Inventor Homare Kudo

Homare Kudo 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).

  • Calcium carbonate filler for resin, process for producing the same, and resin composition containing the filler
    Patent number: 8975322
    Abstract: A calcium carbonate filler for a resin, in which the content rate of particles having a particle diameter of 0.26 ?m or less is 30% or less in a number particle size distribution diameter measured (Mac-VIEW manufactured by Mountech) from an electron micrograph, and which satisfies the following expressions (a) to (c) is provided. Dms5/Dmv5?3??(a) 1?Sw?8 (m2/g)??(b) Mo?300 (ppm)??(c) wherein Dms5: A 5% diameter (?m) accumulated from a small particle side in a volume particle size distribution by a laser diffraction particle size distribution measuring device (MASTERSIZER2000 manufactured by Malvern); Dmv5: A 5% diameter (?m) accumulated from a small particle side in a number particle size distribution in a particle diameter (Mac-VIEW manufactured by Mountech) measured with an electron microscope; Sw: A BET specific surface area (Macsorb manufactured by Mountech) (m2/g); Mo: A water amount (ppm) by the Karl Fischer method at 200 to 300° C.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: March 10, 2015
    Assignee: Maruo Calcium Co., Ltd.
    Inventors: Hidemitsu Kasahara, Kouhei Sako, Tomonori Kosaka, Homare Kudo, Shigeo Takiyama, Hisakazu Kojo
  • CALCIUM CARBONATE FILLER FOR RESIN, PROCESS FOR PRODUCING THE SAME, AND RESIN COMPOSITION CONTAINING THE FILLER
    Publication number: 20140024761
    Abstract: A calcium carbonate filler for a resin, in which the content rate of particles having a particle diameter of 0.26 ?m or less is 30% or less in a number particle size distribution diameter measured (Mac-VIEW manufactured by Mountech) from an electron micrograph, and which satisfies the following expressions (a) to (c) is provided. Dms5/Dmv5?3??(a) 1?Sw?8 (m2/g)??(b) Mo?300 (ppm)??(c) wherein Dms5: A 5% diameter (?m) accumulated from a small particle side in a volume particle size distribution by a laser diffraction particle size distribution measuring device (MASTERSIZER2000 manufactured by Malvern); Dmv5: A 5% diameter (?m) accumulated from a small particle side in a number particle size distribution in a particle diameter (Mac-VIEW manufactured by Mountech) measured with an electron microscope; Sw: A BET specific surface area (Macsorb manufactured by Mountech) (m2/g); Mo: A water amount (ppm) by the Karl Fischer method at 200 to 300° C.
    Type: Application
    Filed: April 12, 2012
    Publication date: January 23, 2014
    Applicant: MARUO CALCIUM CO., LTD.
    Inventors: Hidemitsu Kasahara, Kouhei Sako, Tomonori Kosaka, Homare Kudo, Shigeo Takiyama, Hisakazu Kojo