Patents Assigned to Mitsubishi Pencil Company, Limited
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Publication number: 20180333980Abstract: Provided is a knock type writing instrument provided with a simple mechanism allowing a stable fretting operation or the like. A knock type writing instrument 1 is provided with: a shaft cylinder 2; a refill 5 arranged inside the shaft cylinder 2; a spring 6 biasing the refill 5 backward; an operation part 20 pressed forward against a biasing force of the spring 6 in a knocking operation; and a main rotor 30, and is switchable between a writing state and a non-writing state with the knocking operation. The knock type writing instrument 1 is further provided with: a knock locking member 50 movable forward and backward inside the shaft cylinder 2 due to gravity; and a locking part 60 provided on a side of the shaft cylinder 2 and capable of being locked with the knock locking member 50. When a front end of the shaft cylinder 2 is directed upward, the knock locking member 50 moves backward to be locked with the locking part 60 to prevent forward movement of the operation part 20.Type: ApplicationFiled: December 9, 2015Publication date: November 22, 2018Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Yoshiharu NAMIKI, Kazuhiko FURUKAWA, Yusuke NAKAMURA, Kazuhiko TAKANASHI, Atsushi NAKASHIMA, Yoshihiro MANTA
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Publication number: 20180319200Abstract: A ballpoint pen is provided in which the width of the drawing line can be changed, wherein responsiveness can be improved when distinguishing between drawing thin lines and thick lines. A ballpoint pen 1 provided at the pen tip side with a first writing part having a writing ball 25, wherein the ballpoint pen 1 is characterized by being provided with a writing part at the pen tip side with which it is possible to write a thicker line than the line written with the first writing part, only the first writing part being used when the writing weight is 1 g and the writing angle is 90°, and the second writing part being used when the writing weight is 200 g, and the writing angle is 40-90°.Type: ApplicationFiled: November 9, 2016Publication date: November 8, 2018Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Takeo Fukumoto, Tooru Nakajima, Kazuhiko Furukawa, Yusuke Kobayashi, Tomoyuki Akagi
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Patent number: 10118740Abstract: An applicator includes: an applying part on a front portion thereof; a removable cap that totally covers the applying part; a sealing element that seals up a front end portion of the applying part when the cap is fitted; and an inner cap provided inside the cap. The inner cap includes an inner cap body and a hinged cap that is joined to the inner cap body and can abut the inner cap body. The hinged cap has a hollow mounting portion. An engaging portion for fixing the hinged cap is formed inside the cap. When the inner cap having the sealing element held between the inner cap body and the mounting portion is fitted into the interior of the cap, the hinged cap is engaged by the engaging portion inside the cap.Type: GrantFiled: July 13, 2015Date of Patent: November 6, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Kohei Miyamoto, Junya Uehara
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Patent number: 10082629Abstract: It is an object of the present invention to accurately maintain a positional relationship between a lens held in a holding member and an optical fiber without requiring any complicated operation. The invention includes a holder (11), at one end of which a housing section (11c) that houses a ball lens (12) is formed and at the other end of which an insertion hole (11a) for inserting an optical fiber (13) is formed, and a magnet (14) provided outside in a direction crossing a housing direction of the ball lens at the one end of the holder, in which the magnet generates an attracting force for aligning a center of the ball lens with a center of an optical element provided in a coupling target.Type: GrantFiled: September 15, 2015Date of Patent: September 25, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Akihito Mitsui, Naohiko Moriya
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Publication number: 20180256855Abstract: The needle protection cover of a catheter assembly is provided with: an inner cylinder; an outer cylinder capable of being axially displaced relative to the inner cylinder; a blocking body disposed in the inner cylinder in a displaceable manner; and a lock mechanism for restraining the blocking body at the position where the blocking body blocks an inner needle passage. As an inner needle is pulled out, the blocking body is pressed by contact sections formed on the outer cylinder, thereby being moved from an initial position to a blocking position, and the blocking body is held at the blocking position by the lock mechanism.Type: ApplicationFiled: September 10, 2015Publication date: September 13, 2018Applicants: Terumo Kabushiki Kaisha, Mitsubishi Pencil Company, LimitedInventors: Yuya TERASAWA, Hisami TAMANO, Mitsuhiro KAWABATA, Satoru SUMIYOSHI, Makoto TAMURA, Yusuke KYOGOKU
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Publication number: 20180236807Abstract: A refill for a writing tool includes an ink containing tube that is made from a resin material and formed in a straight cylindrical shape, and a writing tip that is attached to an end of the ink containing tube. A press-fit portion, formed at the end of the ink containing tube, has a thickness being made thickened toward an inner circumferential surface and has an opening hole penetrating in an axial direction at a central portion of the press-fit portion. The writing tip or a relay member supporting the writing tip is press-fitted and attached to the press-fit portion. The refill for a writing tool can ensure a necessary and sufficient amount of ink stored without expanding an outer diameter of the ink containing tube, and sufficiently secure mechanical strength of an end portion, and a writing tool using the same can be provided.Type: ApplicationFiled: October 6, 2016Publication date: August 23, 2018Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Takayuki Ikai, Seiichi Takigawa, Naohiro Katou, Takanori Shindou
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Patent number: 10045601Abstract: A rotary advancing container includes: a cylindrical front barrel; a cylindrical rear barrel arranged in a rear of the front barrel so as to be rotatable relative to the front barrel; a holding member inserted inside the front barrel or the rear barrel to support a stick-like member; and a threaded rod that is screwed into an interior part of the rear barrel. The stick-like member having a non-circular shape is moved in an axial direction relative to the front barrel by rotating the front barrel relative to the rear barrel, a front end of the threaded rod is formed in approximately the same shape with the rod-like member, and, a rear side portion of the threaded rod has a non-circular shape and is formed with a thread.Type: GrantFiled: May 26, 2016Date of Patent: August 14, 2018Assignee: Mitsubishi Pencil Company, LimitedInventors: Mitsuru Endo, Satoru Sumiyoshi, Shoichi Saito, Tomoko Hasegawa
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Patent number: 10028564Abstract: Provided is a liquid cosmetic suited for a liquid cosmetic applicator using a brush or a pen feed as an applying means and suited for use in an eyeliner or an eyebrow, which has a good water resistance and is excellent in a skin adhesive property and which is free of a lustrous feeling and has a mat tone. The liquid cosmetic comprises at least carbon black, water, 0.5 to 5% by mass of a dispersant comprising a film-formable resin, 2 to 15% by mass as a solid of a film-forming agent, 0.5% by mass or less of a surfactant, and xanthan gum or a hydroxyethyl acrylate/acryloyldimethyltaurinato Na copolymer for a mat tone provider; a glossiness of the liquid cosmetic is 6.5 or less; and a viscosity thereof at 25° C. and a shear rate of 76.8 s?1 falls in a range of 10 to 270 mPa·s.Type: GrantFiled: February 26, 2013Date of Patent: July 24, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Hiroshi Sato, Yuya Nagasaka
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Patent number: 10023756Abstract: Provided is a solid drawing material containing at least a resin, waxes, a pigment and an extender, wherein it further contains at least one selected from dibasic acids having 12 to 30 carbon atoms and derivatives thereof, and the resin is at least one selected from rosin and modified products thereof, terpene resins and modified products thereof, petroleum resins, maleic acid resins and derivatives thereof, coumarone.indene resins and derivatives thereof, and isoprene base resins. The solid drawing material can draw smoothly, darkly and finely pictures not only on smooth and non-absorbing surfaces of art paper, coated paper, milk packs, plastics such as PET, metal, glass, white boards, and the like, but also on eyebrows, lips, skins and the like as well as ordinary papers such as wood free paper, drawing paper and copier paper and which can readily be erased from the non-absorbing surfaces.Type: GrantFiled: April 22, 2015Date of Patent: July 17, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Huyen Nguyen Thi Thanh, Tatsuya Murata, Motohiro Kasai, Katsunori Kitazawa, Masaaki Matsumoto, Kiyoshi Fujisawa, Kiyohiko Kobayashi, Yumi Morooka
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Publication number: 20180187015Abstract: Provided is a functional particle pigment which can suitably be used as a coloring material for thermosensitive recording materials, inks for writing instruments, inks for stamps, inks for ink jet, inks for printing and the like and which is excellent in a chemical resistance without damaging prescribed performances such as a preservability, a light fastness, a coloring property and the like. The functional particle pigment described above includes, for example, a functional particle pigment containing at least a dye, wherein an outside of the pigment is coated with an olefin base resin.Type: ApplicationFiled: July 14, 2016Publication date: July 5, 2018Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventor: Shuji ICHIKAWA
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Patent number: 9994066Abstract: Provided are an erasing implement and a writing implement equipped with the erasing implement, the erasing implement being capable of erasing writing regardless of the type of ink or lead of the writing implement, even writing with thermochromic ink or writing with pencil lead. The erasing implement is equipped with a first erasing member for erasing writing with thermochromic ink and a second erasing member for erasing writing of types other than thermochromic ink, and is configured by covering the outer surface of the second erasing member with the first erasing member.Type: GrantFiled: January 24, 2013Date of Patent: June 12, 2018Assignee: Mitsubishi Pencil Company, LimitedInventors: Sakae Hayao, Hiroshi Ohtsuka, Tsuyoshi Nishida
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Patent number: 9981499Abstract: A ballpoint pen bends at the pen tip, that can be changed by the force applied when writing. Wobbling does not occur, and a stable writing feel can be obtained. The ballpoint pen makes it possible to clearly change the thickness of the drawn line by the force applied when writing, so that lines of different thickness can be written with a single writing tip using the angle of the ballpoint pen tip. The ballpoint pen includes: a writing ball; a holder for holding the writing ball; an ink supply section; a shaft body inside which the ink supply section is held; and a tip shaft, which is connected to the tip of the shaft body and from which the holder protrudes during writing. The tip shaft is formed by two-color molding in which a front half and a back half are interdigitated in a saw tooth form.Type: GrantFiled: December 9, 2014Date of Patent: May 29, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventor: Takeo Fukumoto
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Patent number: 9924777Abstract: The liquid substance advancing container is constructed such that the piston is formed of a sealing part in a front part of the piston that comes in sliding contact with an inner wall of a reservoir of the barrel body and a bar member in the rear part of the piston that has a threaded section on the inner or outer periphery, is movable in a axial direction and is restrained form moving with respect to the rotational direction, a front bar-like part extended forward from the handle is formed with a threaded section that is directly or indirectly screw-fitted to the threaded section of the bar member in the rear part of the piston, and, as the handle is rotated relative to the barrel body, the piston advances and then after full advance of the piston the front bar-like part can extend and retract by multiple stages.Type: GrantFiled: February 25, 2014Date of Patent: March 27, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Mitsuru Endou, Atsushi Nakashima, Nobuyuki Nakajima, Yuusuke Kyogoku, Tetsuaki Akaishi, Hiroshi Satou, Yukako Shinmura, Hisami Tamano
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Publication number: 20180079920Abstract: Provided are a dispersion of colored resin fine particles for an aqueous ink which has property of improving a drying property of the drawn lines in addition to the performances of a colorant such as a color developability, a weather resistance, and stability, and an aqueous ink composition for a writing instrument which is prepared by using the dispersion. The dispersion is characterized by comprising at least a vinyl monomer (A) containing an acidic functional group of a carboxyl group having solubility of 10% by mass or lower in water, an ester monomer (B) of acrylic acid or methacrylic acid with linear or cyclic alcohol having 2 to 18 carbon atoms, and a basic dye or an oil-soluble dye are dispersed in water. Also, the aqueous ink composition for a writing instrument is characterized by containing the dispersion, a water-soluble organic solvent and water.Type: ApplicationFiled: March 31, 2016Publication date: March 22, 2018Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Hisato Haga, Atsushi Iwasa
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Patent number: 9896591Abstract: A pencil lead includes an organic-inorganic hybrid resin inside fine pores of a porous lead body. A colorant may also be included inside the fine pores. The organic-inorganic hybrid resin is preferably a silica-organic hybrid resin.Type: GrantFiled: December 1, 2016Date of Patent: February 20, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Hiroyuki Arai, Satoru Banzai
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Patent number: 9889701Abstract: A writing implement in which a joint connecting an ink supply section and a ballpoint pen tip together is configured from three members. The three members configuring the joint are a substantially cylindrical center member, a substantially cylindrical surrounding member formed at the outer periphery of the center member, and an interposing member that is molded by a soft member molded so as to cover the outer periphery of the center member and the surrounding member. An annular gap section is provided between the center member and the surrounding member. The leading end of the ink supply section is fitted into the gap section. The joint is formed by two color molding. The center member and the surrounding member are molded by primary molding, and the interposing member is integrally molded onto the center member and the surrounding member by secondary molding.Type: GrantFiled: April 9, 2015Date of Patent: February 13, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Takeo Fukumoto, Tooru Nakajima, Kazuhiko Furukawa
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Publication number: 20180020811Abstract: A brush for cosmetic implements includes a brush part attached to a support member; the brush part includes a plurality of synthetic resin fibers whose tip end has a conically tapered surface, and a plurality of fiber bundles composed of a plurality of synthetic resin fibers is formed at least three places in a radial circumferential surface of the support member, and further formed in an axial direction of the support member. Provided is a brush for a cosmetic implements in which a brush bristle having a tapered end is provided around the support member in the radial direction, and a manufacturing method thereof.Type: ApplicationFiled: July 20, 2017Publication date: January 25, 2018Applicant: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Hitoshi Nakamura, Seiichi Takigawa
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Patent number: 9872550Abstract: To provide an applicator with an application body that is nonabsorbent and can uniformly spread and apply an application liquid over the surface to be applied on without scraping the applied liquid during application. The application body includes a membranous part that is easily deformable in applying liquid, and a cavity part enclosed by the membranous part, and constructed such that when the applying surface of the membranous part comes into contact with the surface to be applied on, the contact surface of the membranous part fits closely following the surface to be applied on by the pressure of the membranous part acting onto the contact surface of the surface to be applied on.Type: GrantFiled: September 23, 2015Date of Patent: January 23, 2018Assignee: Mitsubishi Pencil Company, LimitedInventors: Nobuyuki Nakajima, Shigeki Ooba, Tomoko Hasegawa, Yuuya Nagasaka, Keiichiro Takachiyo
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Patent number: 9873806Abstract: Provided are an ink composition for an aqueous ink ball point pen, which contains modified polyvinyl alcohol and at least one selected from boric acid and salts thereof, and an aqueous ink ball point pen charged with the ink composition, wherein the boric acid and the salts thereof are preferably at least one selected from boric acid, alkali metal salts of boric acid and ammonium salts of boric acid.Type: GrantFiled: September 24, 2014Date of Patent: January 23, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventors: Yusuke Kobayashi, Noriko Sakane, Tomoyuki Akaki
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Patent number: D830462Type: GrantFiled: May 23, 2017Date of Patent: October 9, 2018Assignee: MITSUBISHI PENCIL COMPANY, LIMITEDInventor: Kazuhiko Takanashi