Patents by Inventor Masashi Hamabe

Masashi Hamabe 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: 20240124696
    Abstract: A composite resin molded article includes: a base resin; and fillers dispersed in the base resin, wherein the fillers include fibrous fillers and particulate fillers having aspect ratios lower than aspect ratios of the fibrous fillers.
    Type: Application
    Filed: December 26, 2023
    Publication date: April 18, 2024
    Applicant: Panasonic Holdings Corporation
    Inventors: Masashi HAMABE, Toshifumi NAGINO, Masayoshi IMANISHI, Shouma NISHINO
  • Patent number: 11945142
    Abstract: A composite resin molded product for an acoustic member is a composite resin molded product for an acoustic member containing a main agent resin and fibrous fillers dispersed in the main agent resin, and a concentration of the fibrous fillers is 50% by weight or more in the composite resin molded product, and crystallinity of the main agent resin around the fibrous fillers is higher than crystallinity of the main agent resin in other parts in the composite resin molded product.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: April 2, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masashi Hamabe, Masayoshi Imanishi, Toshifumi Nagino, Shouma Nishino
  • Publication number: 20240101767
    Abstract: A composite resin molded body includes a base resin, fillers dispersed in the base resin, and a furan ring compound, wherein the fillers include a fibrous filler and a particulate filler having an aspect ratio smaller than an aspect ratio of the fibrous filler, the fibrous filler has an aspect ratio of more than or equal to 10, and the particulate filler has an aspect ratio of less than or equal to 2.
    Type: Application
    Filed: December 9, 2023
    Publication date: March 28, 2024
    Inventors: MASASHI HAMABE, MASAYOSHI IMANISHI, TOSHIFUMI NAGINO, SHOUMA NISHINO
  • Patent number: 11938687
    Abstract: A plant fiber-containing composite resin molded article contains a base resin, plant fibers, and, a dispersant, in which each of the plant fibers contains an aroma component, the base resin is a crystalline resin, and in a case where a total content of the base resin, the plant fibers, and the dispersant is 100% by mass, a content of the plant fibers is more than or equal to 50% by mass and less than or equal to 90% by mass.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: March 26, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masayoshi Imanishi, Masashi Hamabe, Toshifumi Nagino, Shouma Nishino
  • Patent number: 11891500
    Abstract: A composite resin molded article includes: a base resin; and fillers dispersed in the base resin, wherein the fillers include fibrous fillers and particulate fillers having aspect ratios lower than aspect ratios of the fibrous fillers.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: February 6, 2024
    Assignee: PANASONIC HOLDINGS CORPORATION
    Inventors: Masashi Hamabe, Toshifumi Nagino, Masayoshi Imanishi, Shouma Nishino
  • Publication number: 20230331951
    Abstract: A foam molded article includes a main agent resin, a filler of greater than or equal to 15% by mass and less than or equal to 80% by mass, and a foaming agent of greater than or equal to 0.01% by mass and less than or equal to 10% by mass, and a foaming ratio caused by the foaming agent is greater than or equal to 1.1 times.
    Type: Application
    Filed: June 9, 2023
    Publication date: October 19, 2023
    Inventors: Yoshie TAKAHASHI, Masashi HAMABE, Masayoshi IMANISHI, Toshifumi NAGINO
  • Publication number: 20230271359
    Abstract: A molded article of a composite resin containing fibers includes a base resin 1 and a fibrous filler 2 having fibrillated ends in a fiber length direction. An expression Ho × 0.4 ? H ? Ho is satisfied where H is a maximum height for an unbroken first plate-like test piece having a thickness of 1 to 2 mm after the test piece is kept at -10° C. for three hours and then is hit by a dropped weight of 250 g; and Ho is as same maximum height for the unbroken second plate-like test piece only made of the base resin with a thickness of 1 to 2 mm as for the first plate-like test piece. An expression So × 0.4 ? s ? So is satisfied where S is a Charpy impact strength (JIS K 7111) of the molded article, and So is a Charpy impact strength of the molded article only made of the base resin.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 31, 2023
    Inventors: Toshifumi Nagino, Masashi Hamabe
  • Patent number: 11725092
    Abstract: A foam molded article includes a main agent resin, a filler of greater than or equal to 15% by mass and less than or equal to 80% by mass, and a foaming agent of greater than or equal to 0.01% by mass and less than or equal to 10% by mass, and a foaming ratio caused by the foaming agent is greater than or equal to 1.1 times.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: August 15, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshie Takahashi, Masashi Hamabe, Masayoshi Imanishi, Toshifumi Nagino
  • Patent number: 11660791
    Abstract: In a method producing a molded article of a composite resin containing base resin and fibers, the composite resin containing a fibrous filler in the base resin and the fibrous filler including natural fibers with a fibrillated part on each end of the fibrous filler in a fiber length direction, the base resin and the fibrous filler are charged into a melt-kneading device. The base resin is melted and the molten base resin and the fibrous filler are kneaded in the melt-kneading device, thereby fibrillating only the ends of the fibrous filler. The obtained composite resin is discharged from the melt-kneading device and formed into a pellet shape, with the molded article of the composite resin produced by molding the pellets.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: May 30, 2023
    Assignee: PANASONIC HOLDINGS CORPORATION
    Inventors: Toshifumi Nagino, Masashi Hamabe
  • Publication number: 20230018345
    Abstract: A composite resin molded article includes: a base resin; and fillers dispersed in the base resin, wherein the fillers include fibrous fillers and particulate fillers having aspect ratios lower than aspect ratios of the fibrous fillers.
    Type: Application
    Filed: September 27, 2022
    Publication date: January 19, 2023
    Applicant: Panasonic Holdings Corporation
    Inventors: Masashi HAMABE, Toshifumi NAGINO, Masayoshi IMANISHI, Shouma NISHINO
  • Patent number: 11541583
    Abstract: This injection-molded article is an injection-molded article using a cellulosic fiber composite resin, including: a resin insert piece including a colorant or a cellulose fiber; a first region formed of the cellulosic fiber composite resin; and a second region formed along a weld line of the cellulosic fiber composite resin extending from the resin insert piece, in which the first region and the second region have different color tones.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: January 3, 2023
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shouma Nishino, Hideo Mine, Masashi Hamabe, Masayoshi Imanishi
  • Publication number: 20220126527
    Abstract: A plant fiber-containing composite resin molded article contains a base resin, plant fibers, and, a dispersant, in which each of the plant fibers contains an aroma component, the base resin is a crystalline resin, and in a case where a total content of the base resin, the plant fibers, and the dispersant is 100% by mass, a content of the plant fibers is more than or equal to 50% by mass and less than or equal to 90% by mass.
    Type: Application
    Filed: October 19, 2021
    Publication date: April 28, 2022
    Inventors: MASAYOSHI IMANISHI, MASASHI HAMABE, TOSHIFUMI NAGINO, SHOUMA NISHINO
  • Publication number: 20210394407
    Abstract: A composite resin molded product for an acoustic member is a composite resin molded product for an acoustic member containing a main agent resin and fibrous fillers dispersed in the main agent resin, and a concentration of the fibrous fillers is 50% by weight or more in the composite resin molded product, and crystallinity of the main agent resin around the fibrous fillers is higher than crystallinity of the main agent resin in other parts in the composite resin molded product.
    Type: Application
    Filed: May 24, 2021
    Publication date: December 23, 2021
    Inventors: MASASHI HAMABE, MASAYOSHI IMANISHI, TOSHIFUMI NAGINO, SHOUMA NISHINO
  • Patent number: 11168202
    Abstract: For a fiber compound resin composition, a melt-kneading process is performed together with a base resin 1, a dispersant, etc. without performing a pretreatment through wet dispersion for the purpose of defibration treatment and modification treatment of a fibrous filler 2. As a result, each fiber of the fibrous filler 2 is defibrated from end portions in a fiber length direction, while a dispersant component put in at the same time is more selectively adsorbed to defibrated portions 3 at the end portions defibrated and increased in surface area. As a result, hydrophobization of the defibrated portions 3 is promoted as compared to a non-defibrated portion 4, so that a difference in hydrophobicity is formed in the fiber length direction of the fibrous filler 2. Therefore, even when the fibrous filler 2 is added in large amount, a melt viscosity during molding may be lowered without reducing a strength of a molded article.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: November 9, 2021
    Assignee: PANASONIC CORPORATION
    Inventors: Toshifumi Nagino, Masashi Hamabe, Masayoshi Imanishi
  • Publication number: 20210252755
    Abstract: This injection-molded article is an injection-molded article using a cellulosic fiber composite resin, including: a resin insert piece including a colorant or a cellulose fiber; a first region formed of the cellulosic fiber composite resin; and a second region formed along a weld line of the cellulosic fiber composite resin extending from the resin insert piece, in which the first region and the second region have different color tones.
    Type: Application
    Filed: January 6, 2021
    Publication date: August 19, 2021
    Inventors: SHOUMA NISHINO, HIDEO MINE, MASASHI HAMABE, MASAYOSHI IMANISHI
  • Patent number: 10822482
    Abstract: Provided is a composite resin composition to be used as a material for a molded article produced by a molding machine. The composite resin composition includes a main ingredient resin 1 and a fibrous filler 2, and the fiber length direction end of the fibrous filler 2 is defibrated. The length of the defibrated portion 3 is 5% or more and 50% or less of the fiber length of the entire fibrous filler 2. The fiber diameter in the defibrated portion 3 of the fibrous filler 2 is 1/1000 or more and 1/10 or less the fiber diameter in the undefibrated portion. The modulus of elasticity of the fibrous filler 2 is higher than the modulus of elasticity of the main ingredient resin 1, and the difference between these moduli of elasticity is within 20 GPa.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: November 3, 2020
    Assignee: PANASONIC CORPORATION
    Inventors: Masashi Hamabe, Toshifumi Nagino
  • Publication number: 20200283607
    Abstract: A composite resin molded body includes a main resin and a plurality of fibrous fillers dispersed in the main resin, in which some fibrous filler of the plurality of fibrous fillers are exposed to the surface, and central portions of the fibrous fillers exposed to the surface are exposed to the surface.
    Type: Application
    Filed: February 17, 2020
    Publication date: September 10, 2020
    Inventors: MASASHI HAMABE, TOSHIFUMI NAGINO, MASAYOSHI IMANISHI, YOSHIE TAKAHASHI
  • Publication number: 20200255619
    Abstract: A foam molded article includes a main agent resin, a filler of greater than or equal to 15% by mass and less than or equal to 80% by mass, and a foaming agent of greater than or equal to 0.01% by mass and less than or equal to 10% by mass, and a foaming ratio caused by the foaming agent is greater than or equal to 1.1 times.
    Type: Application
    Filed: January 23, 2020
    Publication date: August 13, 2020
    Inventors: YOSHIE TAKAHASHI, MASASHI HAMABE, MASAYOSHI IMANISHI, TOSHIFUMI NAGINO
  • Publication number: 20200206991
    Abstract: A molded article of a composite resin containing fibers includes a base resin 1 and a fibrous filler 2 having fibrillated ends in a fiber length direction. An expression Ho×0.4?H?Ho is satisfied where H is a maximum height for an unbroken first plate-like test piece having a thickness of 1 to 2 mm after the test piece is kept at ?10° C. for three hours and then is hit by a dropped weight of 250 g; and Ho is as same maximum height for the unbroken second plate-like test piece only made of the base resin with a thickness of 1 to 2 mm as for the first plate-like test piece. An expression So×0.4?S?So is satisfied where S is a Charpy impact strength (JIS K 7111) of the molded article, and So is a Charpy impact strength of the molded article only made of the base resin.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Inventors: Toshifumi Nagino, Masashi Hamabe
  • Patent number: 10654201
    Abstract: A composite resin molded body includes a base compound resin and a molten-kneaded mixture which contains an organic fibrous filler, and a dispersing agent. In the composite resin molded body, a content of the organic fibrous filler is at least 5 mass % and at most 70 mass %, and a proportion T of the organic fibrous filler carbonized in the composite resin molded body is equal to or less than 0.1.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: May 19, 2020
    Assignee: Panasonic Corporation
    Inventors: Masateru Mikami, Masashi Hamabe, Takao Kuromiya