Patents by Inventor Hisatomo Yonehara

Hisatomo Yonehara 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: 6524757
    Abstract: An object is to provide a color filter which is capable of forming a pattern using an alkaline developer and has excellent heat resistance, solvent resistance and chemical resistance, and is also suitable for practical use. The color filter comprises a transparent substrate and a pixel formed on the transparent substrate, wherein the pixel is made of a coating film of a curable colored composition containing (a) a coloring material, (b) a compound having a photopolymerizable functional group and (c) an amino resin having a carboxyl group and/or a phenolic hydroxyl group and the coating layer is photocured, followed by heat curing.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: February 25, 2003
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Junichiro Koike, Hisatomo Yonehara, Hiroyuki Tokuda, Yasunobu Hirota
  • Publication number: 20020081376
    Abstract: The present invention provides a method of producing a color filter which has pixels formed by an ink-jet printing method and also has superior heat resistance and solvent resistance, especially heat resistance. This method comprises forming pixels on a transparent substrate using a colored composition containing (a) an amino resin having a carboxyl group and/or a phenolic hydroxyl group and (b) a coloring material by an ink-jet printing method, followed by curing the pixels.
    Type: Application
    Filed: September 24, 2001
    Publication date: June 27, 2002
    Applicant: Dainippon Ink and Chemicals, Inc.
    Inventor: Hisatomo Yonehara
  • Patent number: 6410611
    Abstract: Objects of the present invention are the provision of an active energy ray curable composition which can be cured in the absence of a photoinitiator, and which can also be cured at practical light intensities and irradiating energy, and a method for curing the said curable composition; in which the composition comprises a maleimide derivative represented by formula (1): wherein m and n each represent an integer of 1 to 5, and the total of m and n is 6 or smaller, R11 and R12 each represent a linking group selected from the group consisting of {circle around (1)} an alkylene group, {circle around (2)} an alicyclic group, {circle around (3)} an arylalkylene group, and {circle around (4)} a cycloalkylalkyene group, G1 and G2 each represent an ester linkage selected from the group consisting of —COO— and —OCO—, R2 represents a linking chain having an average molecular weight of 100 to 100,000 selected from the group consisting of (A) a (poly)ether linking chain and (B
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: June 25, 2002
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Yoshinobu Sakurai, Atsushi Miyakawa, Hisatomo Yonehara, Hidenobu Ishikawa, Katsuji Takahashi
  • Publication number: 20020025481
    Abstract: An object is to provide a color filter which is capable of forming a pattern using an alkaline developer and has excellent heat resistance, solvent resistance and chemical resistance, and is also suitable for practical use. The color filter comprises a transparent substrate and a pixel formed on the transparent substrate, wherein the pixel is made of a coating film of a curable colored composition containing (a) a coloring material, (b) a compound having a photopolymerizable functional group and (c) an amino resin having a carboxyl group and/or a phenolic hydroxyl group and the coating layer is photocured, followed by heat curing.
    Type: Application
    Filed: July 11, 2001
    Publication date: February 28, 2002
    Applicant: Dainippon Ink and Chemicals, Inc.
    Inventors: Junichiro Koike, Hisatomo Yonehara, Hiroyuki Tokuda, Yasunobu Hirota