Patents by Inventor Akiko HIRAYAMA
Akiko HIRAYAMA 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).
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Patent number: 11634601Abstract: To provide an aqueous ink composition for ballpoint pen having excellent ink discharge properties at the initial writing (initial touch) even after exposure of the pen tip for a long period of time. The aqueous ink composition for ballpoint pen contains at least 0.1 to 5% by mass of a graft compound of an allyl alcohol-maleic anhydride-styrene copolymer composed of: (a) a polyoxyalkylene alkyl ether unit represented by Formula (I), (b) a maleic anhydride unit, and (c) a styrene unit, the allyl alcohol-maleic anhydride-styrene copolymer having the composition ratio (a):(b):(c) of 25 to 75:25 to 75:0 to 50% by mol and having a mass average molecular weight from 1000 to 50000, and polyoxyalkylene monoalkyl alcohol; 5 to 40% by mass of resin particles; and water; wherein in Formula (I), R represents an alkyl group having 1 to 5 carbons, and m is a positive number of 5 to 50.Type: GrantFiled: June 22, 2018Date of Patent: April 25, 2023Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Akiko Hirayama, Kousuke Ogura, Kana Miyoshi
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Publication number: 20230086315Abstract: A marking pen, comprising: a shaft cylinder; a porous pen core accommodated in the shaft cylinder, and configured to project from, and retract into, an opening part provided at a tip end of the shaft cylinder; an inner cotton accommodated in the shaft cylinder, and filled with an aqueous ink composition to be fed to the pen core, the aqueous ink composition including a water soluble organic solvent in an amount of from 20 mass % to 60 mass %; and a delivery mechanism configured to cause a tip end of the pen core to project from, and retract into, the opening part.Type: ApplicationFiled: January 14, 2021Publication date: March 23, 2023Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Yusuke KOBAYASHI, Toru NAKAJIMA, Akiko HIRAYAMA, Koji TAKADA
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Publication number: 20230073595Abstract: An ink composition for a water-based ballpoint pen and a water- based ballpoint pen, which have stable ink flowability even in a so-called fine ballpoint pen, have excellent luster of drawn lines, and do not cause a ball to fall off. The ink composition for a water-based ballpoint pen according to the present invention contains at least an aluminum pigment and 8 to 25 mass% of solid urethane particles with an average particle size of 0.3 to 10 ?m. In addition, a water-based ballpoint pen according to the present invention is provided with the ink composition for a water-based ballpoint pen that has the above composition.Type: ApplicationFiled: January 30, 2020Publication date: March 9, 2023Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Akiko HIRAYAMA, Kousuke OGURA
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Publication number: 20220169874Abstract: Provided is an ink composition for water-based ballpoint pens, which can provide excellent low-viewing angle visibility on a dark-colored writing surface and drawing lines with good luster. The ink composition for water-based ballpoint pens according to the present invention includes at least an aluminum pigment and titanium oxide-enclosing resin particles having an average particle size from 0.5 to 3 ?m.Type: ApplicationFiled: February 25, 2020Publication date: June 2, 2022Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Takashi HAMAZAKI, Kousuke OGURA, Akiko HIRAYAMA
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Publication number: 20220025197Abstract: Provided is an ink composition for an aqueous ballpoint pen, the composition having excellent ink discharging performance even if a pen point is exposed for a long period of time. The ink composition for an aqueous ballpoint pen according to the present invention is characterized by containing at least from 1 to 35 mass % of titanium oxide having an average particle size of greater than 0.1 ?m and smaller than or equal to 1 ?m, and from 1 to 35 mass % of non-tacky urethane particles having an average particle size from 0.1 to 6 ?m.Type: ApplicationFiled: February 19, 2020Publication date: January 27, 2022Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Kousuke OGURA, Akiko HIRAYAMA, Takashi HAMAZAKI
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Publication number: 20210375085Abstract: A money storage device includes a change machine configured to store bills and coins, and a housing that houses the change machine. The housing includes a bill insertion port through which a bill is inserted, a coin insertion port through which a coin is inserted and arranged adjacent to the bill insertion port in a width direction of the housing, a bill discharge port through which a bill stored in the change machine is discharged and arranged below the bill insertion port and the coin insertion port, and a coin discharge port through which a coin stored in the change machine is discharged and arranged below the bill discharge port.Type: ApplicationFiled: February 24, 2021Publication date: December 2, 2021Inventors: Akiko HIRAYAMA, Tsuyoshi GOTANDA, Jun KIKUCHI, Jun YOSHITOMI
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Publication number: 20210192480Abstract: A store system includes an information processing device and a checkout machine, which may be comprised by at least one processor. The information processing device acquires a balance of electronic money. The information processing device calculates a price every time a purchased commodity is registered. The information processing device correlates charge instruction information of the electronic money with a mobile terminal and stores the charge instruction information when a predetermined condition holds between the balance of the electronic money and the price. The checkout machine selects, when receiving a payment instruction from the mobile terminal not correlated with the charge instruction information, a payment mode for receiving an input of data concerning payment and selects, when receiving the payment instruction from the mobile terminal correlated with the charge instruction information, a charge mode for receiving an input of data concerning charging of the electronic money.Type: ApplicationFiled: August 12, 2020Publication date: June 24, 2021Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventors: Tsuyoshi GOTANDA, Kenya HIRAMATSU, Akiko HIRAYAMA, Shiori HIDAKA
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Publication number: 20210047529Abstract: Provided is an aqueous ink composition for a writing instrument with excellent stability of ink flow and the like, in which aggregation of a microcapsule pigment and clogging due to such aggregation are suppressed. The aqueous ink composition for a writing instrument includes a microcapsule pigment which includes inside, at least, a pigment and a medium of a fatty acid polyol ester. A melting point of the fatty acid polyol ester is preferably 40° C. or higher, and is preferably 70° C. or lower.Type: ApplicationFiled: January 21, 2019Publication date: February 18, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Kousuke OGURA, Akiko HIRAYAMA, Kana MIYOSHI
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Patent number: 10851252Abstract: Provided is an aqueous ink composition for writing instruments, which enables desired colorfulness to be obtained easily. The aqueous ink composition for writing instruments according to the present invention contains: pigmented microspheres each having a matrix comprising water and a polymer, and a water-insoluble dye; and unpigmented microspheres.Type: GrantFiled: June 14, 2017Date of Patent: December 1, 2020Assignee: Mitsubishi Pencil Company, LimitedInventors: Kana Miyoshi, Kousuke Ogura, Akiko Hirayama
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Publication number: 20200165473Abstract: To provide an aqueous ink composition for ballpoint pen having excellent ink discharge properties at the initial writing (initial touch) even after exposure of the pen tip for a long period of time. The aqueous ink composition for ballpoint pen contains at least 0.1 to 5% by mass of a graft compound of an allyl alcohol-maleic anhydride-styrene copolymer composed of: (a) a polyoxyalkylene alkyl ether unit represented by Formula (I), (b) a maleic anhydride unit, and (c) a styrene unit, the allyl alcohol-maleic anhydride-styrene copolymer having the composition ratio (a):(b):(c) of 25 to 75:25 to 75:0 to 50% by mol and having a mass average molecular weight from 1000 to 50000, and polyoxyalkylene monoalkyl alcohol; 5 to 40% by mass of resin particles; and water; wherein in Formula (I), R represents an alkyl group having 1 to 5 carbons, and m is a positive number of 5 to 50.Type: ApplicationFiled: June 22, 2018Publication date: May 28, 2020Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Akiko HIRAYAMA, Kousuke OGURA, Kana MIYOSHI
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Publication number: 20190211220Abstract: Provided is an aqueous ink composition for writing instruments, which enables desired colorfulness to be obtained easily. The aqueous ink composition for writing instruments according to the present invention contains: pigmented microspheres each having a matrix comprising water and a polymer, and a water-insoluble dye; and unpigmented microspheres.Type: ApplicationFiled: June 14, 2017Publication date: July 11, 2019Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Kana Miyoshi, Kousuke OGURA, Akiko HIRAYAMA