Patents by Inventor Mariko KAWANA

Mariko KAWANA 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).

  • Publication number: 20230049373
    Abstract: The present invention provides a paste-like composition for dental use that shows stable consistency and runniness and little stringiness immediately after production and even after long storage. The present invention relates to a paste-like composition for dental use, comprising a polymerizable monomer (A) and a filler (B), the filler (B) comprising a particulate filler (B-1) having an average primary particle diameter of 0.001 to 0.2 ?m, and a filler (B-2) having an average primary particle diameter of more than 0.2 ?m and 30 ?m or less, the paste-like composition having a consistency of 15 to 40 mm, the particulate filler (B-1) having an average secondary particle diameter of 20 ?m or less.
    Type: Application
    Filed: December 26, 2020
    Publication date: February 16, 2023
    Applicant: KURARAY NORITAKE DENTAL INC.
    Inventors: Mariko KAWANA, Nobusuke KASHIKI
  • Patent number: 11400030
    Abstract: The present invention provides a two-paste dental curable composition achieving clinically acceptable bond durability to dental adherends including dental glass ceramic restorations (particularly lithium disilicate-containing glass ceramic restorations) without using conventionally used primers. The present invention relates to a two-paste dental curable composition comprising: a first agent comprising a polymerizable monomer (a) having an acid group, a polymerizable monomer (b) having no acid group, a polymerization initiator (c), and a filler (d); and a second agent comprising a polymerizable monomer (b) having no acid group, at least one filler (e) selected from the group consisting of a basic glass filler and alumina, a polymerization accelerator (f), and a silane coupling agent (g) represented by the following general formula [I]: (The definitions of the symbols are omitted.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: August 2, 2022
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Mariko Kawana, Kenji Hatanaka, Momoe Abe
  • Publication number: 20220008314
    Abstract: The present invention provides a dental cleaner that provides desirable cleanliness against contamination of dental restorations and abutment teeth due to protein-containing body fluids while ensuring uniform quality by reducing precipitation of salts, and that ensures desirable bond durability after cleaning while being safe to use in the oral cavity. The present invention relates to a dental cleaner comprising an acidic group-containing radical polymerizable monomer (a), water (b), and an organic amine compound (c). The present invention also relates to a dental remover for temporary adhesives comprising an acidic group-containing compound (A), water (B), and a basic compound (C).
    Type: Application
    Filed: November 19, 2019
    Publication date: January 13, 2022
    Applicant: KURARAY NORITAKE DENTAL INC.
    Inventors: Keishu OKADA, Mariko KAWANA, Nobusuke KASHIKI, Yamato NOJIRI, Yuko TAJIRI, Atsushi MINE, Hirofumi YATANI
  • Patent number: 11173100
    Abstract: The present invention provides a dental cement showing excellent storage stability, undergoing little change in paste properties during long-term storage, and having a small solidification risk during long-term storage. The present invention relates to a multi-part dental cement comprising: a first paste comprising an acid group-containing (meth)acrylic polymerizable monomer (a), a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group, an oxidizing agent (c-1) of a chemical polymerization initiator, and a filler (d); and a second paste comprising a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group, a reducing agent (c-2) of a chemical polymerization initiator, and a filler (e), wherein the filler (d) is treated with a surface treatment agent and has an average particle diameter of 0.01 to 50.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: November 16, 2021
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Mariko Kawana, Shumei Ishihara, Mitsuru Takei, Kengo Futami
  • Publication number: 20200155421
    Abstract: The present invention provides a two-paste dental curable composition achieving clinically acceptable bond durability to dental adherends including dental glass ceramic restorations (particularly lithium disilicate-containing glass ceramic restorations) without using conventionally used primers. The present invention relates to a two-paste dental curable composition comprising: a first agent comprising a polymerizable monomer (a) having an acid group, a polymerizable monomer (b) having no acid group, a polymerization initiator (c), and a filler (d); and a second agent comprising a polymerizable monomer (b) having no acid group, at least one filler (e) selected from the group consisting of a basic glass filler and alumina, a polymerization accelerator (f), and a silane coupling agent (g) represented by the following general formula [I]: (The definitions of the symbols are omitted.
    Type: Application
    Filed: June 28, 2018
    Publication date: May 21, 2020
    Applicant: KURARAY NORITAKE DENTAL INC.
    Inventors: Mariko KAWANA, Kenji HATANAKA, Momoe ABE
  • Publication number: 20190262240
    Abstract: The present invention provides a dental cement showing excellent storage stability, undergoing little change in paste properties during long-term storage, and having a small solidification risk during long-term storage. The present invention relates to a multi-part dental cement comprising: a first paste comprising an acid group-containing (meth)acrylic polymerizable monomer (a), a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group, an oxidizing agent (c-1) of a chemical polymerization initiator, and a filler (d); and a second paste comprising a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group, a reducing agent (c-2) of a chemical polymerization initiator, and a filler (e), wherein the filler (d) is treated with a surface treatment agent and has an average particle diameter of 0.01 to 50.
    Type: Application
    Filed: October 20, 2017
    Publication date: August 29, 2019
    Applicant: KURARAY NORITAKE DENTAL INC.
    Inventors: Mariko KAWANA, Shumei ISHIHARA, Mitsuru TAKEI, Kengo FUTAMI