Patents by Inventor Youichi Takasu
Youichi Takasu 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: 8500354Abstract: A water-based ballpoint pen including a specific aqueous ink, a ball, a ballpoint pen tip that holds the ball at a front end of the ballpoint pen tip, an ink follower following the ink with consumption of the ink, and an ink container directly containing the ink and the ink follower. The ink container communicates with a rear portion of the tip. The ink follower includes at least a base oil and a thickener. The ball point pen tip discharges the ink from the top end portion. The ink container supplies the ink to the tip.Type: GrantFiled: August 10, 2007Date of Patent: August 6, 2013Assignee: The Pilot Ink Co., Ltd.Inventor: Youichi Takasu
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Patent number: 8491213Abstract: A water-based ballpoint pen including a specific aqueous ink, a ball, a ballpoint pen tip that holds the ball at a front end of the ballpoint pen tip, an ink follower following the ink with consumption of the ink, and an ink container directly containing the ink and the ink follower. The ink container communicates with a rear portion of the tip. The ink follower includes at least a base oil and a thickener. The ball point pen tip discharges the ink from the top end portion. The ink container supplies the ink to the tip.Type: GrantFiled: May 7, 2004Date of Patent: July 23, 2013Assignee: The Pilot Ink Co., Ltd.Inventor: Youichi Takasu
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Publication number: 20100098475Abstract: Provided are a writing instrument produced at a lower cost than conventional thermochromic writing instruments utilizing frictional heat, slim like a pencil and not bulky because it contains an ink directly in a barrel thereof, and excellent in portability; and a set of the writing instruments. The writing instrument 1 is obtained by directly filling a barrel thereof with an ink 2 which becomes colorless or colored, or undergoes a color change by heating and an ink follower 5 following the ink with its consumption; firmly fixing a writing tip portion 3 to the end of the barrel directly or via a relay member; and disposing a friction body 6 having an elasticity at the rear end portion of the barrel. The writing instrument set has a plurality of the writing instruments respectively different from each other in color tone.Type: ApplicationFiled: October 16, 2007Publication date: April 22, 2010Applicant: THE PILOT INK CO., LTDInventors: Katsuyuki Fujita, Youichi Takasu, Kuniyuki Senga
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Patent number: 7396797Abstract: A method for producing a catalyst for a fuel cell is provided which is capable of improving output characteristics of the fuel cell. Metal fine particles making up the catalyst for the fuel cell to be used as a fuel electrode and air electrode are formed by reducing platinum salt with molybdenum carbonyl. The catalyst for the fuel cell is formed by supporting platinum-molybdenum fine particles on carbon particles. By employing this reducing method, platinum-molybdenum fine particles being small in size and high in dispersibility can be obtained, making the catalyst for the fuel cell highly active. By constructing the fuel and air electrodes using the catalyst for the fuel cell, high outputs from the fuel cell are made possible.Type: GrantFiled: April 14, 2005Date of Patent: July 8, 2008Assignee: Fujitsu LimitedInventors: Masami Tsutsumi, Seiji Hibino, Hiroaki Yoshida, Fumio Takei, Youichi Takasu, Kensuke Yoshida
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Publication number: 20070292200Abstract: A water-based ballpoint pen including a specific aqueous ink, a ball, a ballpoint pen tip that holds the ball at a front end of the ballpoint pen tip, an ink follower following the ink with consumption of the ink, and an ink container directly containing the ink and the ink follower. The ink container communicates with a rear portion of the tip. The ink follower includes at least a base oil and a thickener. The ball point pen tip discharges the ink from the top end portion. The ink container supplies the ink to the tip.Type: ApplicationFiled: August 10, 2007Publication date: December 20, 2007Inventor: Youichi Takasu
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Publication number: 20060216574Abstract: A fuel battery 20 includes a fuel supplier 32, and a battery cell structure 31A and a battery cell structure 31B which are arranged to face each other respectively and to sandwich the fuel supplier 32, and in the battery cell structure 31A and the battery cell structure 31B, fuel battery cells CA1 through CA6, and CB1 through CB6 are arranged. Due to separators 40a and 40b, in the battery cell structure 31A, from the fuel electrode of the fuel battery cell CA1 to the air electrode of the fuel battery cell CA6, and in the battery cell structure 31B, from the fuel electrode of the fuel battery cell CB6 to the air electrode of the fuel battery cell CB1, are electrically connected in series. With the cell connector 35, the air electrodes of the fuel battery cells on the diagonal lines of the battery cell structure 31A and the battery cell structure 31B are connected electrically in parallel.Type: ApplicationFiled: May 31, 2006Publication date: September 28, 2006Applicant: FUJITSU LIMITEDInventors: Kensuke Yoshida, Fumio Takei, Masami Tsutsumi, Hiroaki Yoshida, Youichi Takasu, Nawalage Cooray, Seiji Hibino
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Publication number: 20060135357Abstract: A method for producing a catalyst for a fuel cell is provided which is capable of improving output characteristics of the fuel cell. Metal fine particles making up the catalyst for the fuel cell to be used as a fuel electrode and air electrode are formed by reducing platinum salt with molybdenum carbonyl. The catalyst for the fuel cell is formed by supporting platinum-molybdenum fine particles on carbon particles. By employing this reducing method, platinum-molybdenum fine particles being small in size and high in dispersibility can be obtained, making the catalyst for the fuel cell highly active. By constructing the fuel and air electrodes using the catalyst for the fuel cell, high outputs from the fuel cell are made possible.Type: ApplicationFiled: April 14, 2005Publication date: June 22, 2006Applicant: FUJITSU LIMITEDInventors: Masami Tsutsumi, Seiji Hibino, Hiroaki Yoshida, Fumio Takei, Youichi Takasu, Kensuke Yoshida
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Patent number: 6887921Abstract: An ink follower composition to be provided at the rear end of an ink held directly in an ink container of a writing instrument and capable of going forward with consumption of the ink. The composition comprises at least one selected from an ethylene-?-olefin co-oligomer, an ?-olefin oil, a purified mineral oil and a polybutene, and added thereto a specific fatty acid amide. This composition can simultaneously satisfy the two important performances conflicting with each other, the ink flow-back preventive performance and the ink follow-up performance.Type: GrantFiled: April 17, 2002Date of Patent: May 3, 2005Assignee: The Pilot Ink Co., Ltd.Inventors: Hideaki Asami, Youichi Takasu
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Publication number: 20050019090Abstract: A water-based ballpoint pen comprising a specific aqueous ink, a ball, a ballpoint pen tip for holding said ball at a front end thereof and for discharging said ink from said top end portion, an ink follower following said ink with consumption of said ink, and an ink container directly containing said ink and said ink follower and for supplying said ink to said tip, said ink container communicating with a rear portion of said tip, wherein the ink follower comprises specific at least a base oil and a thickener.Type: ApplicationFiled: May 7, 2004Publication date: January 27, 2005Inventor: Youichi Takasu
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Publication number: 20030200896Abstract: An ink follower composition to be provided at the rear end of an ink held directly in an ink container of a writing instrument and capable of going forward with consumption of the ink. The composition comprises at least one selected from an ethylene-&agr;-olefin co-oligomer, an &agr;-olefin oil, a purified mineral oil and a polybutene, and added thereto a specific fatty acid amide. This composition can simultaneously satisfy the two important performances conflicting with each other, the ink flow-back preventive performance and the ink follow-up performance.Type: ApplicationFiled: April 17, 2002Publication date: October 30, 2003Applicant: The Pilot Ink Co., Ltd.Inventors: Hideaki Asami, Youichi Takasu