Patents by Inventor Kazuhiro Ami
Kazuhiro Ami 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: 7001094Abstract: Provided is a writing instrument in which a pen tip comprising a fibrous feed or a plastic feed is coated with a coating agent comprising a substance providing a cap-off property, wherein a fluorine base surfactant and/or a silicone base surfactant are added to an ink for the above writing instrument, and/or a substance which is solid at room temperature and has a solubility of 5% or less in an ink solvent at room temperature and which has a polar functional group is added to the coating agent, whereby the writing instrument having an excellent cap-off performance can be obtained.Type: GrantFiled: November 8, 2001Date of Patent: February 21, 2006Assignee: Mitsubishi Pencil Kabushiki KaishaInventors: Kazuhiro Ami, Tatsuya Mizoguchi, Takahiro Osada
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Patent number: 6761496Abstract: A writing instrument equipped with an exchangeable inner pen filled with an ink containing a solvent having a vapor pressure of 1 to 50 mm Hg (20° C.) in a writing instrument main body which is a barrel part, wherein the inner pen described above has a pen tip comprising a fiber feeder or a plastic feeder, and the above pen tip is coated with a substance having a vaporization-inhibiting action in an amount of 0.01 to 20% by weight in terms of a weight ratio based on the pen tip. It is more effective to further add a substance having a vaporization-inhibiting action to the ink. The substance having a vaporization-inhibiting action includes glycerin derivatives, polyoxyethylenesorbit fatty acid esters, alkyl phosphates, waxes and lecithin.Type: GrantFiled: December 4, 2002Date of Patent: July 13, 2004Assignee: Mitsubishi Pencil Kabushiki KaishaInventors: Takahiro Osada, Kazuhiro Ami, Yukinori Sawa
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Publication number: 20040028462Abstract: Provided is a writing instrument in which a pen tip comprising a fibrous feed or a plastic feed is coated with a coating agent comprising a substance providing a cap-off property, wherein a fluorine base surfactant and/or a silicone base surfactant are added to an ink for the above writing instrument, and/or a substance which is solid at room temperature and has a solubility of 5% or less in an ink solvent at room temperature and which has a polar functional group is added to the coating agent, whereby the writing instrument having an excellent cap-off performance can be obtained.Type: ApplicationFiled: May 9, 2003Publication date: February 12, 2004Inventors: Kazuhiro Ami, Tatsuya Mizoguchi, Takahiro Osada
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Publication number: 20030143017Abstract: A writing instrument equipped with an exchangeable inner pen filled with an ink containing a solvent having a vapor pressure of 1 to 50 mm Hg (20° C.) in a writing instrument main body which is a barrel part, wherein the inner pen described above has a pen tip comprising a fiber feeder or a plastic feeder, and the above pen tip is coated with a substance having a vaporization-inhibiting action in an amount of 0.01 to 20% by weight in terms of a weight ratio based on the pen tip. It is more effective to further add a substance having a vaporization-inhibiting action to the ink. The substance having a vaporization-inhibiting action includes glycerin derivatives, polyoxyethylenesorbit fatty acid esters, alkyl phosphates, waxes and lecithin.Type: ApplicationFiled: December 4, 2002Publication date: July 31, 2003Inventors: Takahiro Osada, Kazuhiro Ami, Yukinori Sawa
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Patent number: 6478495Abstract: In a capless writing instrument with its writing element arranged in the barrel cylinder so that a writing point of the writing element can come out and retract through a front-end opening of the barrel cylinder, an inner cap having a dome-like convex portion projected frontwards is arranged at the front-end part of the barrel cylinder, and the inner cap is formed of rubber or elastic resin, a slit-forming groove having a thin-film portion at the depressed bottom of the slit is formed from a position at the root of the dome-like inner cap to the opposite position at the root intersecting the substantially center of the convex portion.Type: GrantFiled: March 11, 2002Date of Patent: November 12, 2002Assignee: Mitsubishi Pencil Kabushiki KaishaInventors: Kazuhiro Ami, Yukinori Sawa, Takahiro Osada
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Patent number: 6474893Abstract: The writing instrument having an excellent cap-off performance is characterized, as shown in, for example, FIG. 3, by that in a writing instrument 10 having a pen tip 13 comprising a fibrous feed or a plastic feed, the pen tip 13 described above is coated with a substance which is solid at room temperature and in which a solubility in an ink solvent is 10% or less at room temperature among substances providing the pen tip with a cap-off property. This writing instrument 10 is such excellent in a cap-off performance that the good writing performance is obtained even after the pen tip is left standing in the air over a long period of time.Type: GrantFiled: June 18, 2001Date of Patent: November 5, 2002Assignee: Mitsubishi Pencil Kabushiki KaishaInventors: Takahiro Osada, Kazuhiro Ami
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Publication number: 20020131807Abstract: In a capless writing instrument with its writing element arranged in the barrel cylinder so that a writing point of the writing element can come out and retract through a front-end opening of the barrel cylinder, an inner cap having a dome-like convex portion projected frontwards is arranged at the front-end part of the barrel cylinder, and the inner cap is formed of rubber or elastic resin, a slit-forming groove having a thin-film portion at the depressed bottom of the slit is formed from a position at the root of the dome-like inner cap to the opposite position at the root intersecting the substantially center of the convex portion.Type: ApplicationFiled: March 11, 2002Publication date: September 19, 2002Inventors: Kazuhiro Ami, Yukinori Sawa, Takahiro Osada
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Patent number: 5882683Abstract: The present invention provides a stick cosmetic which is not oily when it is applied to skin and is not softened at high temperatures and which is adhered to the skin with a powdery and smooth feeling when it is applied to the skin while having a sufficiently large flexural strength and is suitable for eyebrows and eyeliner having a sufficiently good color tone. That is, the present invention relates to a stick cosmetic which has a porosity of 5 to 45% and in which the pores are impregnated with silicone oil, oil & fat or wax, comprising 1 to 10 weight % of at least one clay selected from the group consisting of bentonite, smectite, montmorillonite, bederite, nontronite, hectorite, and saponite, an inorganic extender pigment, and an inorganic color pigment as essential components, wherein the above inorganic fine particles leaving no carbides in sintering at 300.degree. to 1000.degree. C.Type: GrantFiled: December 29, 1995Date of Patent: March 16, 1999Assignee: Mitsubishi Pencil Kabushiki KaishaInventor: Kazuhiro Ami
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Patent number: 5807562Abstract: The amount of clay such as bentonite, smectite, etc. is limited to a small amount, i.e., 1-10% wt. while the mean diameters of the inorganic extenders and inorganic coloring pigments used are limited to within 0.01 to 50 .mu.m so that the particle size of the cosmetic when applied is made to fall within the range of 0.01 to 30 .mu.m. These settings provide a stick type cosmetic imparting a powdery feeling, without granular sensation.Type: GrantFiled: July 14, 1997Date of Patent: September 15, 1998Assignee: Mitsubishi Pencil Kabushiki KaishaInventor: Kazuhiro Ami
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Patent number: 5733344Abstract: The present invention provides a temporary hairdye which is excellent in dispersion stability of a pigment even after storage over a long period of time by dispersing titanium black, which is safe to a human body, in alcohol having 4 or less carbon atoms, primarily ethanol by using an N-methacryloylethyl-N,N-dimethylammonium..alpha.-N-methylcarboxybetain.but yl methacrylate copolymer. Further, there can be prepared a temporary hairdye which increases dispersion stability of the pigments and provides a different hue by subjecting titanium black and other pigments, particularly iron oxide type pigments such as iron oxide red, black iron oxide and yellow iron oxide to dispersion treatment together.Type: GrantFiled: November 27, 1996Date of Patent: March 31, 1998Assignee: Mitsubishi Pencil Kabushiki KaishaInventors: Katsuhiko Shiraishi, Kiyokazu Sakurai, Tetsuo Kosaka, Tomoko Hasegawa, Kazuhiro Ami, Takashi Umeno
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Patent number: 5693313Abstract: The present invention provides a teeth-coating liquid comprising a color pigment represented by titanium oxide and a pearl pigment or an extender pigment represented by tricalcium phosphate, dispersed singly or in combination thereof in an alcohol series solvent, mainly ethanol with an N-methacryloylethyl-N,N-dimethylammonium..alpha.-N-methylcarboxybetaine.bu tyl methacrylate copolymer, and an applicator for the coating liquid described above.This teeth-coating liquid provides excellent dispersion stability, gloss, coating property and sticking performance by using the N-methacryloylethyl-N,N-dimethylammonium..alpha.-N-methylcarboxybetaine.bu tyl methacrylate copolymer singly or in combination with a shellac and a vinyl acetate resin.Type: GrantFiled: December 4, 1995Date of Patent: December 2, 1997Assignees: Mitsubishi Pencil Kabushiki Kaisha, Hanix Co., Ltd.Inventors: Katsuhiko Shiraishi, Kiyokazu Sakurai, Tetsuo Kosaka, Takashi Umeno, Tomoko Hasegawa, Kazuhiro Ami