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| Number | Title | Issue Date |
| 8173052 | Writing implement with thermochromic coloring color-memory composition A writing implement with a thermochromic coloring color-memory composition which comprises a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a reaction medium which controls color reac... | 05/08/2012 |
| 8147959 | Color-change laminate A color-change laminate in which a color tone derived from a porous layer is visually perceived in a dry state and a metallic lustrous property is visually perceived in a liquid-absorbed state of the porous layer caused by water application is excellent in luminance... | 04/03/2012 |
| 8128304 | Direct-fluid-supply writing implement A direct-fluid-supply writing implement has a pentip, an ink occlusion body connected to a rear end of the pentip, an ink tank that directly stores ink and is arranged at a rear of the ink occlusion body, a plurality of communication tubes that connects the ink tank... | 03/06/2012 |
| 7946777 | Multi-refill writing instrument A multi-refill writing instrument includes a barrel, writing bodies accommodated in the barrel so as to be movable back and forth, elastic bodies urging the writing bodes backward, operating bodies connected to rear ends of the corresponding writing bodies and windo... | 05/24/2011 |
| 7942598 | Writing implement The outer surface of an inner cap 3 is fixedly secured to the inner surface of an outer cap 4. In the opened end portion of the inner cap 3, there is formed a rear end shell portion 31 which projects backwardly. On the outer peripheral su... | 05/17/2011 |
| 7794631 | Thermochromic coloring color-memory composition and thermochromic coloring color-memory microcapsule pigment containing the same A thermochromic coloring color-memory composition which comprises a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) an ester compound represented by the specific formula as a reaction ... | 09/14/2010 |
| 7753680 | Water-discoloring drawing toy and water-discoloring drawing toy set including the same 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 i... | 07/13/2010 |
| 7708913 | Thermochromic coloring color-memory composition and thermochromic coloring color-memory microcapsule pigment containing the same A thermochromic coloring color-memory composition which comprises a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) an ester compound represented by the specific formula as a reaction ... | 05/04/2010 |
| 7611300 | Double-head writing instrument A double-head writing instrument has a barrel having a partition formed inside thereof, first and second ink-tanks provided inside the barrel so as not to communicate each other, first and second ink-retaining members connected with first and second nibs provided on... | 11/03/2009 |
| 7578631 | Direct-fluid-supply writing implement A direct-fluid-supply writing implement has a pentip, an ink occluding element connected to a rear end of the pentip, the ink occluding element including a high-density portion, and a low density portion continuously connected to a... | 08/25/2009 |
| 7575386 | Color-memorizing photochromic writing instrument, color-memorizing photochromic writing instrument set using the same and method for alternately expressing color-memorizing photochromic function of writing image A color-memorizing photochromic writing instrument, which comprises a writing tip portion connected to a light-shielding tubular member or refill; and a color-memorizing photochromic ink, wherein the ink is prepared by dissolving, dispersing or suspending a diarylet... | 08/18/2009 |
| 7575385 | Double-head writing instrument A double-head writing instrument has a barrel having a partition formed inside thereof, first and second ink-tanks provided inside the barrel so as not to communicate each other, first and second ink-retaining members connected with first and second nibs provided on... | 08/18/2009 |
| 7494537 | Thermochromic coloring color-memory composition and thermochromic coloring color-memory microcapsule pigment containing the same A thermochromic coloring color-memory composition comprising a homogeneous solubilized mixture of (A) an electron donative coloring organic compound, (B) an electron accepting compound and (C) a compound represented by the specific formula as a reaction medium which... | 02/24/2009 |
