Patents by Inventor Tadashi Hayakawa

Tadashi Hayakawa 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: 10754275
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: August 25, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Patent number: 10725398
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: July 28, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Publication number: 20200199416
    Abstract: Disclosed is an aqueous bonding composition comprising: (A) a modified saccharide which is a product of (a) a saccharide and (b) a radical initiator. The composition further preferably comprises a structure based on (c) an amine. The composition further preferably comprises (B) an inorganic acid salt. The formaldehyde-free aqueous bonding composition can contribute to an improvement in mechanical properties such as strength and elastic modulus of a molded article, compared to a formaldehyde-containing phenol resin composition.
    Type: Application
    Filed: November 25, 2019
    Publication date: June 25, 2020
    Inventors: Tsuyoshi TAMOGAMI, Yoshio Yoshida, Tadashi Hayakawa
  • Patent number: 10604682
    Abstract: To provide a hot-melt pressure-sensitive adhesive which is easily coated, has a weak odor, high stability with time, and is also excellent in adhesive force retention performance from a low temperature range to a high temperature range. A hot-melt pressure-sensitive adhesive comprising: an amorphous polystyrene resin (A) having a number-average molecular weight of 50,000 or more; and a thermoplastic block copolymer (B) which is a copolymer of vinyl-based aromatic hydrocarbons and conjugated diene compounds.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: March 31, 2020
    Assignee: HENKEL AG & CO. KGAA
    Inventors: Yukio Isobe, Itsuro Tomatsu, Tadashi Hayakawa
  • Publication number: 20200095471
    Abstract: Objective: To provide a moisture-curable hot-melt adhesive agent having excellent balance of initial adhesive strength, adhesive strength after curing and heat resistance and the like, and a layered product bonded with the moisture-curable hot-melt adhesive agent. Means for solving the problem: A moisture-curable hot-melt adhesive agent comprising an urethane prepolymer having an isocyanate group at the end (A), a styrene based block copolymer (B), and a tackifying resin (C), wherein the styrene based block copolymer (B) comprises a styrene based block copolymer having 10 to 35% by weight of a styrene content (B1) and a styrene based block copolymer having 40 to 70% by weight of a styrene content (B2).
    Type: Application
    Filed: November 26, 2019
    Publication date: March 26, 2020
    Inventors: Kenji Matsuda, Ai Takamori, Tadashi Hayakawa
  • Publication number: 20200087543
    Abstract: There are provided a moisture curable hot melt adhesive excellent in balance among initial adhesion strength, post curing adhesion strength and heat resistance, and a layered product formed by bonding with that moisture curable hot melt adhesive agent. The moisture-curable hot melt adhesive comprises a urethane prepolymer having an isocyanate group at the end (A), a styrene based block copolymer (B), and an urethane modified rosin (C), wherein the urethane modified rosin (C) is a reaction product of a rosin derivative having hydroxyl group and an isocyanate compound.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Kenji Matsuda, Ai Takamori, Tadashi Hayakawa
  • Publication number: 20200087542
    Abstract: To provide a moisture-curable hot-melt adhesive agent having excellent balance of initial adhesive strength, adhesive strength after curing and heat resistance and the like, and a layered product bonded with the moisture-curable hot-melt adhesive agent. Means for solving the problem: A moisture-curable hot-melt adhesive agent comprising an urethane prepolymer having an isocyanate group at the end (A), a styrene-isoprene based block copolymer (B), and a tackifying resin (C), wherein the moisture-curable hot-melt adhesive agent comprises 25 to 64% by weight of (A), based on 100 parts by weight in total of (A) and (B).
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Kenji Matsuda, Ai Takamori, Tadashi Hayakawa
  • Publication number: 20200033758
    Abstract: The powder container includes a container body containing a powder for image formation, the powder being to be supplied to a powder replenishing device; a conveyor configured to convey the powder from one end in a longitudinal direction to the other end at which a cylindrical container opening is formed, the conveyor being provided inside the container body; a gear configured to rotate the conveyor with an external driving force; a container cover configured to cover the gear, the container cover having a gear exposing hole for partially exposing a gear tooth; and a nozzle receiver configured to guide the conveying nozzle inside of the container body, the nozzle receiver being provided on the container opening. The container cover includes a container engaged portion provided outer than the tooth of the gear in a radial direction.
    Type: Application
    Filed: October 3, 2019
    Publication date: January 30, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiroshi HOSOKAWA, Tsukuru KAI, Junichi MATSUMOTO, Makoto KOMATSU, Tadashi HAYAKAWA, Yuzuru OZAWA, Shinji TAMAKI, Kenji KIKUCHI
  • Publication number: 20200033757
    Abstract: Provided is a powder container having a new structure capable of stable discharge and transport of a powder contained in a container by enabling the powder to be reliably discharged to the outside of the package while preventing the powder from spilling and flying out of the container.
    Type: Application
    Filed: October 1, 2019
    Publication date: January 30, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Junichi MATSUMOTO, Tsukuru KAI, Hiroshi HOSOKAWA, Makoto KOMATSU, Tadashi HAYAKAWA, Yuzuru OZAWA
  • Publication number: 20200026220
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Application
    Filed: September 27, 2019
    Publication date: January 23, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Yasufumi TAKAHASHI, Kunihiro OHYAMA, Masayuki YAMANE, Takeshi UCHITANI, Tadashi HAYAKAWA, Takuji TAKAHASHI, Shouji OKABE, Akira SHINSHI, Yuichiro UEDA, Masaki TAKAHASHI, Yuuki SATOH
  • Patent number: 10496009
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: December 3, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Patent number: 10474062
    Abstract: The powder container includes a container body containing a powder for image formation, the powder being to be supplied to a powder replenishing device; a conveyor configured to convey the powder from one end in a longitudinal direction to the other end at which a cylindrical container opening is formed, the conveyor being provided inside the container body; a gear configured to rotate the conveyor with an external driving force; a container cover configured to cover the gear, the container cover having a gear exposing hole for partially exposing a gear tooth; and a nozzle receiver configured to guide the conveying nozzle inside of the container body, the nozzle receiver being provided on the container opening. The container cover includes a container engaged portion provided outer than the tooth of the gear in a radial direction.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: November 12, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroshi Hosokawa, Tsukuru Kai, Junichi Matsumoto, Makoto Komatsu, Tadashi Hayakawa, Yuzuru Ozawa, Shinji Tamaki, Kenji Kikuchi
  • Patent number: 10466623
    Abstract: Provided is a powder container having a new structure capable of stable discharge and transport of a powder contained in a container by enabling the powder to be reliably discharged to the outside of the package while preventing the powder from spilling and flying out of the container.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: November 5, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Junichi Matsumoto, Tsukuru Kai, Hiroshi Hosokawa, Makoto Komatsu, Tadashi Hayakawa, Yuzuru Ozawa
  • Patent number: 10392541
    Abstract: The present invention provides a hot melt adhesive which is excellent in environmental friendliness, thermal stability, adhesion to a polyolefin substrate and a polyester substrate, and heat resistance. The present invention relates to a hot melt adhesive comprising (A) a polar functional group-modified conjugated diene-based polymer, (B) an aliphatic polyester-based resin, (C) an amorphous olefin-based polymer, (D) a crystalline polypropylene resin, and (E) a tackifier resin.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: August 27, 2019
    Assignee: Henkel AG & Co. KGaA
    Inventors: Makoto Takenaka, Tadashi Hayakawa
  • Publication number: 20190235416
    Abstract: Provided is a powder container having a new structure capable of stable discharge and transport of a powder contained in a container by enabling the powder to be reliably discharged to the outside of the package while preventing the powder from spilling and flying out of the container.
    Type: Application
    Filed: April 8, 2019
    Publication date: August 1, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Junichi MATSUMOTO, Tsukuru KAI, Hiroshi HOSOKAWA, Makoto KOMATSU, Tadashi HAYAKAWA, Yuzuru OZAWA
  • Patent number: 10281843
    Abstract: Provided is a powder container having a new structure capable of stable discharge and transport of a powder contained in a container by enabling the powder to be reliably discharged to the outside of the package while preventing the powder from spilling and flying out of the container.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: May 7, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Junichi Matsumoto, Tsukuru Kai, Hiroshi Hosokawa, Makoto Komatsu, Tadashi Hayakawa, Yuzuru Ozawa
  • Publication number: 20180253028
    Abstract: A toner container includes a container body, an opening, a cover, a toner discharge port, a shutter, a cylindrical structure, protrusions, and an identifier. The shutter is attached to the cover and includes a main shutter covering the toner discharge port. The main shutter moves between a closed position to close the toner discharge port and an open position to open the toner discharge port. The protrusions are on both sides of the cover and protrude in a direction orthogonal to a toner container mounting direction. The identifier is on the cover to indicate a toner color. The cylindrical structure's leading end is downstream of leading ends of the protrusions in the mounting direction. The main shutter's leading end is downstream of the protrusions' leading ends in the mounting direction when the main shutter is in the closed position. The protrusions are downstream of the identifier in the mounting direction.
    Type: Application
    Filed: May 3, 2018
    Publication date: September 6, 2018
    Inventors: Yasufumi TAKAHASHI, Kunihiro OHYAMA, Masayuki YAMANE, Takeshi UCHITANI, Tadashi HAYAKAWA, Takuji TAKAHASHI, Shouji OKABE, Akira SHINSHI, Yuichiro UEDA, Masaki TAKAHASHI, Yuuki SATOH
  • Publication number: 20180239278
    Abstract: Provided is a powder container having a new structure capable of stable discharge and transport of a powder contained in a container by enabling the powder to be reliably discharged to the outside of the package while preventing the powder from spilling and flying out of the container.
    Type: Application
    Filed: April 25, 2018
    Publication date: August 23, 2018
    Inventors: Junichi MATSUMOTO, Tsukuru KAI, Hiroshi HOSOKAWA, Makoto KOMATSU, Tadashi HAYAKAWA, Yuzuru OZAWA
  • Patent number: 9989887
    Abstract: An information storage device installed in a removable device configured to be removably installed in an image forming apparatus body, includes: an information storage unit that stores information communicated between the image forming apparatus body and the removable device; a terminal that comes in contact with a body side terminal; and a substrate that holds the information storage unit and the terminal and includes a hole configured to be engaged with a protruding section installed in the image forming apparatus body. The terminal includes a plurality of terminals each including one of a plurality of metallic plates arranged in a transverse direction thereof. An earth terminal, which comes in contact with a body side earth terminal formed in the protruding section, is formed in the hole. The hole is disposed at a position sandwiched between two metallic plates among the plurality of metallic plates.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: June 5, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yasufumi Takahashi, Kunihiro Ohyama, Masayuki Yamane, Takeshi Uchitani, Tadashi Hayakawa, Takuji Takahashi, Shouji Okabe, Akira Shinshi, Yuichiro Ueda, Masaki Takahashi, Yuuki Satoh
  • Patent number: 9983509
    Abstract: Provided is a powder container having a new structure capable of stable discharge and transport of a powder contained in a container by enabling the powder to be reliably discharged to the outside of the package while preventing the powder from spilling and flying out of the container.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: May 29, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Junichi Matsumoto, Tsukuru Kai, Hiroshi Hosokawa, Makoto Komatsu, Tadashi Hayakawa, Yuzuru Ozawa