Patents by Inventor Akio Nakashima
Akio Nakashima 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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Publication number: 20080015317Abstract: To provide a relatively lightweight wall adhering material comprising a non-woven fabric or a water-resistant paper, having a specific coating weight as a substrate and provided thereon a specific amount of a porous layer, a water-discoloring wall adhering material which has excellent convenience at the time of production and use, promptly forms clear image to perceive, is difficult to fall down when adhered to a wall, and has high commercial value, and a water-discoloring wall adhering material set using the same.Type: ApplicationFiled: July 12, 2007Publication date: January 17, 2008Applicant: THE PILOT INK CO., LTD.Inventor: Akio NAKASHIMA
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Publication number: 20070190893Abstract: To provide: a water-discoloring drawing toy which, when a writing utensil or applicator for water adhesion is applied thereto, produces a multicolor image and which eliminates the monotonous production of monochromatic images in a related-art technique and is rich in unexpectedness and changes; and a water-discoloring drawing toy set including this drawing toy.Type: ApplicationFiled: February 15, 2007Publication date: August 16, 2007Applicant: THE PILOT INK CO., LTD.Inventor: Akio Nakashima
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Publication number: 20070086832Abstract: A writing instrument for a water-metachromatic member has a cylindrical container capable of holding water, formed with an opening at a tip end thereof to communicate the interior of the container with the exterior thereof, a hollow cylindrical holder which directly holds a pen point member, being formed at a tip end with an opening through which the tip end of said pen point member is projected outwardly and at a rear end with a communication hole, and a gap provided between an inner peripheral surface of the cylindrical holder and an outer peripheral surface of the rod-like body to form a gap for generating a capillary force therebetween. When the holder is held to the container, water is supplied through said communication hole to said pen point member. When the holder is detached from the container, the opening of the container is usable for water supply.Type: ApplicationFiled: November 9, 2006Publication date: April 19, 2007Applicant: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Takao Kani
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Patent number: 7168876Abstract: A writing instrument for a water-metachromatic member has a cylindrical container capable of holding water, formed with an opening at a tip end thereof to communicate the interior of the container with the exterior thereof, a hollow cylindrical holder which directly holds a pen point member, being formed at a tip end with an opening through which the tip end of said pen point member is projected outwardly and at a rear end with a communication hole, and a gap provided between an inner peripheral surface of the cylindrical holder and an outer peripheral surface of the rod-like body to form a gap for generating a capillary force therebetween. When the holder is held to the container, water is supplied through said communication hole to said pen point member. When the holder is detached from the container, the opening of the container is usable for water supply.Type: GrantFiled: August 11, 2005Date of Patent: January 30, 2007Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Takao Kani
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Patent number: 7056570Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: GrantFiled: April 7, 2004Date of Patent: June 6, 2006Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Hisayoshi Kato
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Publication number: 20060008315Abstract: A writing instrument for a water-metachromatic member has a cylindrical container capable of holding water, formed with an opening at a tip end thereof to communicate the interior of the container with the exterior thereof, a hollow cylindrical holder which directly holds a pen point member, being formed at a tip end with an opening through which the tip end of said pen point member is projected outwardly and at a rear end with a communication hole, and a gap provided between an inner peripheral surface of the cylindrical holder and an outer peripheral surface of the rod-like body to form a gap for generating a capillary force therebetween. When the holder is held to the container, water is supplied through said communication hole to said pen point member. When the holder is detached from the container, the opening of the container is usable for water supply.Type: ApplicationFiled: August 11, 2005Publication date: January 12, 2006Applicant: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Takao Kani
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Patent number: 6984418Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: GrantFiled: April 7, 2004Date of Patent: January 10, 2006Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Hisayoshi Kato
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Publication number: 20050260362Abstract: In a liquid composition for metachromatic members which is to be applied to a metachromatic member having a support and provided thereon a porous layer formed by fixing therein a low refractive index pigment in a disperse state together with a binder resin, the liquid composition has a liquid medium and dissolved and/or dispersed therein a solid matter having a refractive index of from 1.3 to 1.8. Also disclosed is a metachromatic member set having this liquid composition and a metachromatic member. The liquid composition for metachromatic members satisfies permanent preservability of images, having superior density retention and shape retention of images formed in the metachromatic member and being suitable for uses in which impressions of hands, feet and the like are taken and preserved or in which written images or stamped images are preserved.Type: ApplicationFiled: October 21, 2004Publication date: November 24, 2005Applicant: THE PILOT INK CO., LTD.Inventor: Akio Nakashima
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Patent number: 6964807Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: GrantFiled: September 25, 2001Date of Patent: November 15, 2005Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Hisayoshi Kato
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Patent number: 6953345Abstract: A water-metachromatic sheet has a support with a porous layer containing a binder resin with dispersed fine-particle silicic acid. The sheet is capable of rendering different transparency between water absorbed and unabsorbed states. The support is a cloth having a weight per unit area of 30 gm2 to 1,000 gm2, the fine-particle silicic acid is contained in an amount of from 1 gm2 to 30 gm2, and the fine-particle silicic acid is incorporated in an amount from 0.5 to 2 parts by weight based on 1 part by weight of the binder resin.Type: GrantFiled: October 4, 2000Date of Patent: October 11, 2005Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Takao Kani
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Publication number: 20040191487Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: ApplicationFiled: April 7, 2004Publication date: September 30, 2004Applicant: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Hisayoshi Kato
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Publication number: 20040185234Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: ApplicationFiled: April 7, 2004Publication date: September 23, 2004Applicant: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Hisayoshi Kato
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Patent number: 6638620Abstract: A reversible thermochromic composition which can be freely adjusted in its discoloration temperature even if the kind of electron donating compound and electron accepting compound to be used in combination remain the same and exhibits a remarkably improved light-fastness during quenching. A reversible thermochromic composition having an improved light-fastness comprising (a) an electron donating compound, (b) an electron accepting compound ultraviolet absorbing capacity represented by the following general formula I: wherein X represents a hydrogen atom, —CnH2n+1 or —OCmH2m+1; m represents an integer of from 1 to 9; n represents an integer of from 1 to 10; and p represents an integer of from 1 to 3, and (c) a discoloration temperature adjustor and a product comprising same.Type: GrantFiled: August 8, 2001Date of Patent: October 28, 2003Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Yoshiaki Ono
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Publication number: 20020150737Abstract: A water-discoloring printed matter 1 which comprises a substrate having porous designs 3 closely formed on a surface of the substrate by scatteringly fixing at least one low-refractive-index pigment to the surface together with a binder resin; and a water-discoloring toy, e.g., a doll garment or stuffed toy, produced by sewing the printed matter in which the substrate is a fabric. The matter which in a dry state has a complicated, colorful, highly decorative appearance and produces a satisfactory discoloration effect upon water absorption; and a water-discoloring toy employing the same, such as a doll garment or stuffed toy.Type: ApplicationFiled: April 10, 2002Publication date: October 17, 2002Applicant: THE PILOT INK CO., LTD.Inventor: Akio Nakashima
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Patent number: 6416853Abstract: A color-change laminate comprising a substrate and formed thereon a porous layer which comprises a low-refractive-index pigment dispersed in a binder resin and tenaciously adherent thereto is disclosed. The porous layer becomes transparent or translucent upon absorption of a liquid medium, e.g., water to give a variety of visual changes. The low-refractive-index pigment contains at least a finely particulate silicic acid produced by the wet process. Toy sets consisting of the above color-change laminates with dolls or toy animals and toy sets consisting of the above color-change laminates with a means of water adhesion are also provided.Type: GrantFiled: January 7, 1999Date of Patent: July 9, 2002Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Masahiro Ito, Yoshiaki Ono
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Publication number: 20020063244Abstract: A reversible thermochromic composition which can be freely adjusted in its discoloration temperature even if the kind of electron donating compound and electron accepting compound to be used in combination remain the same and exhibits a remarkably improved light-fastness during quenching.Type: ApplicationFiled: August 8, 2001Publication date: May 30, 2002Applicant: THE PILOT INK CO., LTD.Inventors: Akio Nakashima, Yoshiaki Ono
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Publication number: 20020052161Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.Type: ApplicationFiled: September 25, 2001Publication date: May 2, 2002Inventors: Akio Nakashima, Hisayoshi Kato
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Patent number: 6228804Abstract: A color-change material has a reversibly thermochromic layer and a porous layer containing a low-refractive-index pigment. The color-change material changes its color in response to heat or water. The reversibly thermochromic layer and the porous layer are superposed on each other, or the reversibly thermochromic layer and the porous layer are formed side by side. Alternatively, a color-change material has a substrate and formed thereon a color-changing porous layer including a reversibly thermochromic material, a low-refractive-index pigment, and a binder. The reversibly thermochromic material and the pigment are dispersed in the binder and tenaciously adherent thereto.Type: GrantFiled: November 2, 1998Date of Patent: May 8, 2001Assignee: The Pilot Ink Co., Ltd.Inventor: Akio Nakashima
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Patent number: 5858914Abstract: A footwear has a thermochromic coloring color-memory layer having a large hysteresis on a color-density-to-temperature curve so as to show interchangeability between a first color phase and a second color phase different from the first color phase, and a coloring tool for forming a desired image on the footwear.Type: GrantFiled: June 24, 1996Date of Patent: January 12, 1999Assignee: The Pilot Ink Co., Ltd.Inventors: Yutaka Shibahashi, Katsuyuki Fujita, Akio Nakashima
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Patent number: 5558699Abstract: A thermochromic color-memory compositions exhibiting high color contrast between high color density in a colored state and sufficiently low color density in a decolored state with high freedom of selection of the reaction medium, and highly useful as a thermochromic material. The thermochromic color-memory composition comprises a homogeneous solubilized mixture of essential three components of (a) an electron-donating color-developing organic compound, (b) an electron-accepting compound, and (c) a reaction medium for controlling a color reaction of the component (a) with the component (b); the component (c) being selected from aliphatic ketones of 10 to 22 total carbons and aryl alkyl ketones of 12 to 24 total carbons; and the composition changing the color thereof with a large hysteresis width (.DELTA.H) of from 8.degree. C. to 80.degree. C.Type: GrantFiled: December 23, 1994Date of Patent: September 24, 1996Assignee: The Pilot Ink Co., Ltd.Inventors: Akio Nakashima, Yutaka Shibahashi