Patents by Inventor Toshio Iwasawa

Toshio Iwasawa 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: 11084192
    Abstract: A fabric-like material for reinforcement in an urethane foam molding is obtained by impregnating a part of a surface of a nonwoven fabric of organic fibers with a hot melt magnetic material and immobilizing the hot melt magnetic material. The hot melt magnetic material satisfies compositions described below and has a softening point of 70 to 100° C. Ethylene-vinyl acetate copolymer (A): 10 to 95% by mass. Wax (B): 0 to 30% by mass. Magnetic powder (C): 5 to 70% by mass. (The total of (A), (B) and (C) is 100% by mass.).
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: August 10, 2021
    Assignees: TOYOTA BOSHOKU KABUSHIKI KAISHA, MOLD TECHNICAL OFFICE CO., LTD., TOYO INK SC HOLDINGS CO., LTD., TOYO ADL CORPORATION, TOYOCHEM CO., LTD.
    Inventors: Yoshiyuki Murata, Kensuke Inuzuka, Toshio Iwasawa, Kenichi Hara, Takafumi Senaga
  • Patent number: 11045983
    Abstract: A fabric-like material for reinforcement in an urethane foam molding is obtained by impregnating a part of a surface of a nonwoven fabric of organic fibers with a hot melt magnetic material and immobilizing the hot melt magnetic material. The hot melt magnetic material satisfies compositions described below and has a softening point of 70 to 100° C. Ethylene-vinyl acetate copolymer (A): 10 to 95% by mass. Wax (B): 0 to 30% by mass. Magnetic powder (C): 5 to 70% by mass. (The total of (A), (B) and (C) is 100% by mass.).
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: June 29, 2021
    Assignees: TOYOTA BOSHOKU KABUSHIKI KAISHA, MOLD TECHNICAL OFFICE CO., LTD., TOYO INK SC HOLDINGS CO., LTD., TOYO ADL CORPORATION, TOYOCHEM CO., LTD.
    Inventors: Yoshiyuki Murata, Kensuke Inuzuka, Toshio Iwasawa, Kenichi Hara, Takafumi Senaga
  • Publication number: 20190308347
    Abstract: A fabric-like material for reinforcement in an urethane foam molding is obtained by impregnating a part of a surface of a nonwoven fabric of organic fibers with a hot melt magnetic material and immobilizing the hot melt magnetic material. The hot melt magnetic material satisfies compositions described below and has a softening point of 70 to 100° C. Ethylene-vinyl acetate copolymer (A): 10 to 95% by mass. Wax (B): 0 to 30% by mass. Magnetic powder (C): 5 to 70% by mass. (The total of (A), (B) and (C) is 100% by mass.).
    Type: Application
    Filed: June 30, 2017
    Publication date: October 10, 2019
    Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, MOLD TECHNICAL OFFICE CO., LTD., TOYO INK SC HOLDINGS CO., LTD, TOYO ADL CORPORATION, TOYOCHEM CO., LTD
    Inventors: Yoshiyuki MURATA, Kensuke INUZUKA, Toshio IWASAWA, Kenichi HARA, Takafumi SENAGA
  • Patent number: 10384425
    Abstract: A reinforcing base fabric for an urethane-foamed product includes: a front surface layer and a rear surface layer formed of a fiber integration of a thermoplastic resin; and an intermediate layer formed of a foam and interposed between the front surface layer and the rear surface layer. The total weight per unit area ranges from 90 g/m2 to 260 g/m2. The front surface layer is formed of a fiber integration having a weight per unit area of equal to or greater than 20 g/m2. The rear surface layer is formed of a fiber integration having a weight per unit area of equal to or greater than 30 g/m2. The intermediate layer is formed of a foam layer having a weight per unit area of 30 g/m2 to 100 g/m2.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: August 20, 2019
    Assignees: TOYOTA BOSHOKU KABUSHIKI KAISHA, MOLD TECHNICAL OFFICE CO., LTD., VALUTEC INTERNATIONAL INC.
    Inventors: Kensuke Inuzuka, Yoshiyuki Murata, Toshio Iwasawa, Jun Yamagami
  • Publication number: 20160214358
    Abstract: A reinforcing base fabric for an urethane-foamed product includes: a front surface layer and a rear surface layer formed of a fiber integration of a thermoplastic resin; and an intermediate layer formed of a foam and interposed between the front surface layer and the rear surface layer. The total weight per unit area ranges from 90 g/m2 to 260 g/m2. The front surface layer is formed of a fiber integration having a weight per unit area of equal to or greater than 20 g/m2. The rear surface layer is formed of a fiber integration having a weight per unit area of equal to or greater than 30 g/m2. The intermediate layer is formed of a foam layer having a weight per unit area of 30 g/m2 to 100 g/m2.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 28, 2016
    Applicants: TOYOTA BOSHOKU KABUSHIKI KAISHA, MOLD TECHNICAL OFFICE CO., LTD., VALUTEC INTERNATIONAL INC.
    Inventors: Kensuke Inuzuka, Yoshiyuki Murata, Toshio Iwasawa, Jun Yamagami
  • Patent number: 9132759
    Abstract: Embodiments of the present invention may include a vehicle seat having a cushion pad, a surface member, and a rigid member. The cushion pad may be equipped with a main portion for supporting an occupant, and a side support portion provided on a side of the main portion. The side support portion may protrude from the main portion so as to support the occupant. The surface member is provided on a surface of the cushion pad. The rigid member is provided inside the side support portion of the cushion pad. The rigid member is of higher rigidity than the cushion pad, and protrudes in the same direction in which the side support portion protrudes. The rigid member has an end portion contacting the surface member.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: September 15, 2015
    Assignees: TOYOTA BOSHOKU KABUSHIKI KAISHA, MOLD TECHNICAL OFFICE CO., LTD.
    Inventors: Yoshiyuki Murata, Tetsuo Hayashida, Toshio Iwasawa
  • Publication number: 20150061173
    Abstract: There is provided a fabric reinforcing material for urethane foam-molding, which includes an organic fiber non-woven fabric which has a basis weight of 15 g/m2 to 200 g/m2, and a thermoplastic magnetic resin material which contains 10 to 80 percent by mass of a magnetic material powder having a mean particle diameter of 15 ?m to 500 ?m, and which is permeated in a portion of a surface of the organic fiber non-woven fabric and immobilized. Also, there is provided a method of manufacturing a urethane foam-molded product using the fabric reinforcing material.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 5, 2015
    Inventors: Yoshiyuki MURATA, Kensuke INUZUKA, Toshio IWASAWA, Jun YAMAGAMI
  • Patent number: 8944515
    Abstract: There is provided a vehicle seat including a seat structure member which has a frame member which configures a seat framework, a pad member which configures an outer shape of the seat and is configured to elastically support an occupant, and a sheet-like elastic fiber body which is disposed on a rear surface of the pad member. The pad member is disposed on the frame member while the elastic fiber body contacting the frame member. The elastic fiber body includes protrusions which protrude toward the frame member and recesses which are closer to the pad member than the protrusions, and the elastic fiber body is configured to come into point or line contact with the frame member by the protrusions.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: February 3, 2015
    Assignees: Toyota Boshoku Kabushiki Kaisha, Toyota Tsusho Corporation, Mold Technical Office Co., Ltd.
    Inventors: Tetsunori Kono, Yoshiyuki Murata, Shota Matsushita, Naoya Sato, Toshio Iwasawa
  • Patent number: 8926309
    Abstract: An apparatus for manufacturing a reinforcing cloth of a seat pad which includes: a mold for fixing a sheet and having an outer shape substantially identical to a shape of the reinforcing cloth and provided with a plurality of air holes interconnecting an internal space with an outer surface; a closed space between the mold and a cover member formed by covering the sheet fixed on the mold with the cover member; a heating unit for heating the sheet; and an exhausting unit for exhausting air from the closed space is provided.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: January 6, 2015
    Assignees: Toyota Tsusho Corporation, Mold Technical Office Co. Ltd., Nitto Boseki Co. Ltd.
    Inventors: Masanori Shimada, Koji Wakamatsu, Toshio Iwasawa, Shunpei Ishida, Minoru Nakano
  • Publication number: 20130300178
    Abstract: Embodiments of the present invention may include a vehicle seat having a cushion pad, a surface member, and a rigid member. The cushion pad may be equipped with a main portion for supporting an occupant, and a side support portion provided on a side of the main portion. The side support portion may protrude from the main portion so as to support the occupant. The surface member is provided on a surface of the cushion pad. The rigid member is provided inside the side support portion of the cushion pad. The rigid member is of higher rigidity than the cushion pad, and protrudes in the same direction in which the side support portion protrudes. The rigid member has an end portion contacting the surface member.
    Type: Application
    Filed: April 23, 2013
    Publication date: November 14, 2013
    Applicants: MOLD TECHNICAL OFFICE CO., LTD., TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Yoshiyuki MURATA, Tetsuo HAYASHIDA, Toshio IWASAWA
  • Patent number: 8056603
    Abstract: A method for producing a casting die by simple work without requiring any high work skill in which the working days required for producing the casting die can be shortened greatly. A die model suitably employed in this production method, an NC processing system and a processing robot are also provided.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: November 15, 2011
    Assignees: Kamiita Seiki Seisakusho Co., Ltd., Mold Technical Office Co., Ltd.
    Inventors: Seiji Omata, Toshio Iwasawa
  • Patent number: 7758802
    Abstract: A method of manufacturing a reinforcing cloth of a seat pad includes: fixing a sheet on a mold having an outer shape substantially identical to a shape of the reinforcing cloth and provided with a plurality of air holes interconnecting an internal space with an outer surface; forming a closed space between the mold and a cover member by covering the sheet fixed on the mold with the cover member; heating the sheet; shaping the heated sheet into a shape following the outer shape of the mold by exhausting air from the closed space through the air holes; and demolding the sheet from the mold after removing the cover member.
    Type: Grant
    Filed: March 4, 2006
    Date of Patent: July 20, 2010
    Assignees: Toyota Tsusho Corporation, Mold Technical Office Co. Ltd., Nitto Boseki Co. Ltd.
    Inventors: Masanori Shimada, Koji Wakamatsu, Toshio Iwasawa, Shunpei Ishida, Minoru Nakano
  • Publication number: 20100025002
    Abstract: A method for producing a casting die by simple work without requiring any high work skill in which the working days required for producing the casting die can be shortened greatly. A die model suitably employed in this production method, an NC processing system and a processing robot are also provided.
    Type: Application
    Filed: September 19, 2007
    Publication date: February 4, 2010
    Inventors: Seiji Omata, Toshio Iwasawa
  • Publication number: 20090191298
    Abstract: A method of manufacturing a reinforcing cloth of a sheet pad includes: fixing a sheet on a mold having an outer shape substantially identical to a shape of the reinforcing cloth and provided with a plurality of air holes interconnecting an internal space with an outer surface; forming a closed space between the mold and a cover member by covering the sheet fixed on the mold with the cover member; heating the sheet; shaping the heated sheet into a shape following the outer shape of the mold by exhausting air from the closed space through the air holes; and demolding the sheet from the mold after removing the cover member.
    Type: Application
    Filed: February 13, 2009
    Publication date: July 30, 2009
    Inventors: Masanori Shimada, Koji Wakamatsu, Toshio Iwasawa, Shunpei Ishida, Minoru Nakano
  • Publication number: 20060197250
    Abstract: A method of manufacturing a reinforcing cloth of a sheet pad includes: fixing a sheet on a mold having an outer shape substantially identical to a shape of the reinforcing cloth and provided with a plurality of air holes interconnecting an internal space with an outer surface; forming a closed space between the mold and a cover member by covering the sheet fixed on the mold with the cover member; heating the sheet; shaping the heated sheet into a shape following the outer shape of the mold by exhausting air from the closed space through the air holes; and demolding the sheet from the mold after removing the cover member.
    Type: Application
    Filed: March 4, 2006
    Publication date: September 7, 2006
    Inventors: Masanori Shimada, Koji Wakamatsu, Toshio Iwasawa, Shunpei Ishida, Minoru Nakano
  • Patent number: 5895615
    Abstract: A mold apparatus for producing a synthetic resin foam part has a mold assembly (1) comprising a lower mold (2), an upper mold (3) removably attached to the lower mold to define a closed space, and an insert (4) removably disposed in the closed space. The insert has a partition (6) which is faced to the upper mold through a gap (11). The partition defines a chamber (7) between the insert and the upper mold. The closed space excluding the chamber constitutes a cavity (8) into which a molding compound is introduced. A pressure regulator means (21) is provided for exhausting air from the chamber (7) to keep the chamber in a subatmospheric pressure whereby air in the cavity (8) is also exhausted through the gap.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: April 20, 1999
    Assignee: Bridgestone Corporation
    Inventors: Yutaka Hirata, Teruo Iwai, Toshio Iwasawa
  • Patent number: 5723152
    Abstract: A mold apparatus for producing a synthetic resin foam part has a mold assembly (1) including a lower mold (2), an upper mold (3) removably attached to the lower mold to define a closed space, and an insert (4) removably disposed in the closed space. The insert has a partition (6) which is faced to the upper mold through a gap (11). The partition defines a chamber (7) between the insert and the upper mold. The closed space excluding the chamber constitutes a cavity (8) into which a molding compound is introduced. A pressure regulator means (21) is provided for exhausting air from the chamber (7) to keep the chamber in a subatmospheric pressure whereby air in the cavity (8) is also exhausted through the gap.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: March 3, 1998
    Assignee: Bridgestone Corporation
    Inventors: Yutaka Hirata, Teruo Iwai, Toshio Iwasawa
  • Patent number: 5603874
    Abstract: A polyurethane seat pad having a center seat portion and bank portions therearound is molded by using a mold defining a cavity having a center region corresponding to the center seat portion and side regions corresponding to the bank portions, placing collecting vessels of expanded polyolefin in the side regions of the mold cavity, pouring a foamable polyurethane liquid for low hardness foam into the cavity between said collecting vessels, pouring a foamable polyurethane liquid for high hardness foam into said collecting vessels, and causing the foamable liquids to expand, thereby producing a polyurethane seat pad having the collecting vessels embedded therein. The expanded polyolefin is a crosslinked polyolefin foam having an index of surface wetting of at least 36 dyne/cm. The seat pad in which the bank portions have higher hardness than the seating portion and which is fully durable against repetitive loading can be produced to the desired configuration in a stable manner.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: February 18, 1997
    Assignee: Bridgestone Corporation
    Inventors: Seiji Ishii, Toshio Iwasawa
  • Patent number: 5244612
    Abstract: A polyurethane seat padding having a center seat portion and a bank portion on either side thereof is molded by using a mold defining a cavity having a center region corresponding to the center seat portion and side regions corresponding to the bank portions, placing collecting vessels of expanded polypropylene or polyethylene in the side regions of the mold cavity, pouring a foaming polyurethane liquid for flexible foam into the cavity between the collecting vessels, pouring a foaming polyurethane liquid for rigid foam into the collecting vessels, and causing the foaming liquids to expand, thereby producing a polyurethane seat padding having the collecting vessels embedded therein.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: September 14, 1993
    Assignee: Bridgestone Corporation
    Inventors: Toshio Iwasawa, Kazushige Ebe, Takayoshi Morofuji
  • Patent number: 5132064
    Abstract: A method of molding a foamed product is carried out by using a front and a rear mold for molding a front and a rear portion of the foamed product and a core interposed between the front and rear molds. The method includes steps of pouring or spraying one of foaming stock solutions onto a molding surface of the one mold, arranging the core in the one mold and pouring or spraying the other foaming stock solution onto the core or a molding surface of the other mold. The front and rear molds are closed at a moment when a lapse of time arrives at 30-100% of a rise time of the foaming stock solution later applied. Thereafter the closed molds are maintained in a position where an angle of the closed molds relative to a horizontal plane is within a range between 90.degree. and an angle more than 0.degree.. The front and rear molds are pivotally connected to each other with their one ends by means of a pivot shaft. The core is pivotally supported with its one end by a shaft arranged in parallel to the pivot shaft.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: July 21, 1992
    Assignee: Bridgestone Corporation
    Inventors: Toshio Iwasawa, Takeo Yoshida, Junji Sakata, Kazushige Ebe, Itsumi Komada, Toshihiro Hamaji, Akihito Kimura