Patents Assigned to Mitsubishi Pencil Company, Limited
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Patent number: 11112892Abstract: A stylus pen is disclosed with which coordinate information can be inputted accurately and whose operability can be improved. A stylus pen for inputting information by bringing a screen contacting portion into contact with a capacitive touch screen includes a barrel, a holder made of nonconductive material attached to a front end of the barrel, a screen contacting portion formed of conductive material and attached to a front end of the holder, and a connecting member made of conductive material that is disposed in the holder and has a resilient action along the axial direction and that conducts electricity when a front end portion of the connecting member comes into contact with the screen contacting portion. An outer diameter, perpendicular to the axial direction, of the connecting member is set to be smaller than an outer diameter, perpendicular to the axial direction, of the screen contacting portion.Type: GrantFiled: December 12, 2018Date of Patent: September 7, 2021Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Kiyoshi Fujisawa, Masashi Sakagami, Atsunori Satake
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Publication number: 20210247364Abstract: This backing material for ultrasonic probes substantially comprises porous amorphous carbon.Type: ApplicationFiled: April 1, 2019Publication date: August 12, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Kunitaka Yamada, Toshiki Oono
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Patent number: 11084316Abstract: An applicator in which an applying body consisting of a brush is surely attached to a front barrel to solve a problem that a part of the brush remains stuck inside the front barrel to cause failure of attachment when the applying body is being attached to the front barrel. The applicator includes a front barrel provided on the front end side of a rear barrel, and an applying body formed of a brush with a flange portion at its rear end and arranged inside the front barrel. A receiving part of the flange portion of the applying body and the inner face of the front barrel are in contact with each other in a non-surface contact manner.Type: GrantFiled: May 14, 2018Date of Patent: August 10, 2021Assignee: Mitsubishi Pencil Company, LimitedInventor: Seiichi Maruyama
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Publication number: 20210237502Abstract: Provided is a writing implement having a pen tip that can achieve excellent ink outflow performance and an increase in the effective area of a viewer portion allowing recognition of the writing direction, relative to the whole pen tip. The writing implement is a writing implement A which includes a pen tip 20 feeding ink from a writing implement body 10 and having a viewer portion through which the writing direction can be recognized, and is characterized in that the pen tip 20 is configured of, a least, a writing part 30 and a holding body 40 having a viewer portion 43, and the holding portion 40 has a sheet-shaped ink feeder 25 formed with slits or bumps on the surface and inside thereof to produce a capillary action.Type: ApplicationFiled: May 28, 2019Publication date: August 5, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Yasuaki OGIWARA, Naohiko MORIYA, Toshimi KAMITANI
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Publication number: 20210221162Abstract: To provide an applicator capable of exchanging air after discharging the application liquid even if the applicator is equipped with a valve mechanism that opens its valve by increasing the internal pressure of the ink tank. An applicator includes a valve mechanism that communicates an application liquid tank and an applying part. The valve mechanism has at least a valve stem and a valve holder for holding the valve stem therein, the application liquid can flow through a gap between the valve stem and the valve holder, the valve stem is formed with an air exchange hole, and, the air exchange hole can be opened and closed by an opening/closing member that opens/closes when the pressure on the application liquid tank side becomes negative or positive compared to that on the applying part side.Type: ApplicationFiled: January 20, 2021Publication date: July 22, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventor: Toru NAKAJIMA
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Patent number: 11041081Abstract: Provided is aqueous ink composition for a writing instrument, which contains water and microspheres having a water-insoluble dye and a matrix constituted from a polymer wherein the water-insoluble dye is higher densely present in the inner part of the matrix than at the surface of the matrix, and at least one of the following (a) and (b) is satisfied: (a) the circularity coefficient of the microspheres, as measured by image analysis, is 0.6-1.0, and (b) the 10% strength of the microspheres, as determined in a micro-compression test, is 5-30 MPa.Type: GrantFiled: May 24, 2017Date of Patent: June 22, 2021Assignee: Mitsubishi Pencil Company, LimitedInventor: Kousuke Ogura
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Publication number: 20210179872Abstract: To provide a marking ink composition for a writing board having excellent erasability of drawn lines, the marking ink composition essentially containing a pigment, a pigment dispersant resin, a masking agent, and a modified polyvinylalcohol or a polyvinylalcohol having a degree of saponification from 40 to 84% by molar ratio.Type: ApplicationFiled: December 9, 2020Publication date: June 17, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventor: Tatsuya MIZOGUCHI
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Publication number: 20210178803Abstract: A writing tool includes a refill having an ink reservoir tube formed to be a straight cylinder whose wall thickness is less than 0.56 mm; and a writing tip or a relay member holding the writing tip attached to a first end of the ink reservoir tube, wherein the refill is detachably attached to a barrel, wherein in the refill, amounting strength between the writing tip or the relay member holding the writing tip and the ink reservoir tube is set higher than a mounting strength between the barrel and a connecting portion of the ink reservoir tube. There is provided a writing tool that can prevent the occurrence of a problem such as leakage of ink at a time of replacement of refills and perform replacement of refills smoothly.Type: ApplicationFiled: June 17, 2019Publication date: June 17, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Takayuki IKAI, Seiichi MARUYAMA, Kiyoshi IWAMOTO
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Publication number: 20210147699Abstract: This oil-based ink composition for writing implements contains a colorant, a resin, an organic solvent, and fluorine-based resin particles, the average particle size of the fluorine-based resin particles being at least 0.1 ?m and less than 1.0 ?m when measured by a dynamic light scattering method.Type: ApplicationFiled: March 12, 2018Publication date: May 20, 2021Applicant: Mitsubishi Pencil Company, LimitedInventor: Yumiko Haruhara
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Patent number: 10980332Abstract: Provided is a cosmetic applicator having an applying part at the tip end and a container containing liquid cosmetic to be applied through the applying part. A tip-most portion of the applying part is disposed at a position deviated from an axis of the applying part and an angle ? between a line perpendicular to the axis and a side ridge line at applying part end ranges from 10° to 60°, a circular flange is formed at a rear end of the applying part, a projecting length of the applying part from a front barrel ranges from 5 to 8 mm, a ratio of a major and minor axis Y, X of an opening is Y:X=1.3 to 2:1, and when A and B respectively denote an applied area at deformation load of 0.01 N and that at 0.1 N, A<B<3A is satisfied.Type: GrantFiled: March 26, 2019Date of Patent: April 20, 2021Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Hitoshi Nakamura, Seiichi Takigawa, Takayuki Hayakawa, Jun Nakada
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Publication number: 20210072848Abstract: A stylus pen is disclosed with which coordinate information can be inputted accurately and whose operability can be improved. A stylus pen for inputting information by bringing a screen contacting portion into contact with a capacitive touch screen includes a barrel, a holder made of nonconductive material attached to a front end of the barrel, a screen contacting portion formed of conductive material and attached to a front end of the holder, and a connecting member made of conductive material that is disposed in the holder and has a resilient action along the axial direction and that conducts electricity when a front end portion of the connecting member comes into contact with the screen contacting portion. An outer diameter, perpendicular to the axial direction, of the connecting member is set to be smaller than an outer diameter, perpendicular to the axial direction, of the screen contacting portion.Type: ApplicationFiled: December 12, 2018Publication date: March 11, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Kiyoshi Fujisawa, Masashi Sakagami, Atsunori Satake
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Publication number: 20210071006Abstract: Provided is an aqueous dispersion of colored particles suitable for colorants for writing instrument inks, inkjet inks, painting materials, aqueous coatings, and the like. The aqueous dispersion of colored particles includes a polymer having at least a unit of a monomer derived from a dye having a polymerizable unsaturated group. The monomer derived from the dye is preferably derived from the compound represented by General Formula (1) below: where Dye represents a dye residue, R1 represents a hydrogen atom or a methyl group, Y2 represents —O— or —NR10—, where R10 represents a hydrogen atom or an alkyl group, A1 represents an alkylene group which is unsubstituted or substituted by at least one group selected from —OCO—, —COO—, —NHCONH—, and the like in the chain thereof and/or at the terminal thereof, and/or a hydroxy group.Type: ApplicationFiled: December 11, 2018Publication date: March 11, 2021Applicants: MITSUBISHI PENCIL COMPANY, LIMITED, FUJIFILM WAKO PURE CHEMICAL CORPORATIONInventors: Hisato HAGA, Tetsuji MURASE, Sho SHIBUSAWA, Tomoaki HORIE
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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: 10921909Abstract: An input touch pen includes a digitizer refill contained inside a shaft tube and including a contact tip and a stepped tip portion rearward thereof, and a knock member protruding from an opening at a rear end of the shaft tube. The contact tip can protrude and retract through an opening at a tip end of the shaft tube. The stepped tip portion has a larger diameter than the opening at the tip end. A relationship A>X>Y is satisfied, wherein X represents a knock stroke of the digitizer refill, A a distance from the stepped tip portion to an inner surface at the tip end side when the contact tip is sunken inside the opening, and Y a distance that the contact tip is moved by operation of the knock member from a state of protruding from the opening to a state of being sunken inside the opening.Type: GrantFiled: August 30, 2018Date of Patent: February 16, 2021Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Shinichi Ushiku, Tsuyoshi Nishida, Kyo Nakayama, Satoru Okabe
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Publication number: 20210038487Abstract: Provided are a pigment dispersion liquid for cosmetics having excellent dispersibility of carbon black and aging stability, and an aqueous liquid cosmetic using the same, which is suitable for hair dyes and the like. The pigment dispersion liquid for cosmetics contains, at least, water, a water-soluble organic solvent, carbon black, and a (methacryloyl ethylbetaine/acrylates) copolymer, and a ratio of the water to total solvents is 30 to 95% by mass.Type: ApplicationFiled: March 8, 2019Publication date: February 11, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Keiichiro TAKACHIYO, Satoshi SAKUMA
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Publication number: 20210031557Abstract: A multifunction pen is provided including a refill for a writing implement such as a ballpoint pen on a tip end side and including an electromagnetic induction-based electromagnetic induction refill on a rear end side such that there is no need to perform a switching operation between the writing refill and the electromagnetic induction refill. The multifunction pen includes a shaft tube 10 including openings at both of a tip end and a rear end, a writing refill 40 that is housed inside the shaft tube 10 and that includes a writing tip exposed through the opening at the tip end, and an electromagnetic induction refill 50 that is housed inside the shaft tube 10, that is exposed through the opening at the rear end, and that is employed in electromagnetic induction-based input.Type: ApplicationFiled: October 24, 2018Publication date: February 4, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Kyo Nakayama, Shinichi Ushiku, Tsuyoshi Nishida, Masashi Sakagami, Satoru Okabe, Yusuke Koizumi
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Publication number: 20210007946Abstract: Provided are a pigment dispersion liquid for cosmetics having excellent dispersibility for a pigment of Pigment Red 4 (C.I. 12085) and aging stability, and an aqueous liquid cosmetic using the same, which is suitable for hair dyes and the like. The pigment dispersion liquid for cosmetics contains, at least, water, a water-soluble organic solvent, a pigment of Pigment Red 4 (C.I. 12085), and a (methacryloyl ethylbetaine/acrylates) copolymer, and a ratio of the water to total solvents is 30 to 95% by mass.Type: ApplicationFiled: March 8, 2019Publication date: January 14, 2021Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Keiichiro TAKACHIYO, Satoshi SAKUMA
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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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Patent number: D902742Type: GrantFiled: March 28, 2019Date of Patent: November 24, 2020Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventor: Tsutomu Takemoto
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Patent number: D918711Type: GrantFiled: February 21, 2019Date of Patent: May 11, 2021Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventor: Tappei Noyori