Patents by Inventor Yuji Furuta
Yuji Furuta 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: 20060088972Abstract: An electrode for electrolytic capacitors having a large capacitance and having excellent tan ?, heat resistance, humidity resistance and stability. An electrolytic capacitor using the electrode. An electrode obtained by attaching a compound having a siloxane bond onto the surface of an electrode body comprising a valve-acting metal having formed thereon a dielectric film. The compound having a siloxane bond is attached by coating, dipping or vapor deposition. A solid electrolytic capacitor obtained by forming an electrolyte comprising an electrically conducting polymer on the electrode.Type: ApplicationFiled: December 12, 2005Publication date: April 27, 2006Inventors: Ryuji Monden, Atsushi Sakai, Yuji Furuta, Hideki Ohata
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Patent number: 7025795Abstract: An electrode for electrolytic capacitors having a large capacitance and having excellent tan ?, heat resistance, humidity resistance and stability. An electrolytic capacitor using the electrode. An electrode obtained by attaching a compound having a siloxane bond onto the surface of an electrode body comprising a valve-acting metal having formed thereon a dielectric film. The compound having a siloxane bond is attached by coating, dipping or vapor deposition. A solid electrolytic capacitor obtained by forming an electrolyte comprising an electrically conducting polymer on the electrode.Type: GrantFiled: October 2, 2002Date of Patent: April 11, 2006Assignee: Showa Denko Kabushiki KaishaInventors: Ryuji Monden, Atsushi Sakai, Yuji Furuta, Hideki Ohata
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Patent number: 6890363Abstract: The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to an apparatus therefor. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.Type: GrantFiled: May 24, 2000Date of Patent: May 10, 2005Assignee: Showa Denko K.K.Inventors: Atsushi Sakai, Ryuji Monden, Hiroshi Nitoh, Toshihiro Okabe, Yuji Furuta, Hideki Ohata, Koro Shirane
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Patent number: 6867088Abstract: To provide a solid electrolytic capacitor where solid electrolyte is formed at the cut end part and at the masking part to a larger thickness than in other parts, where the adhesion of the solid electrolyte formed on the valve acting metal oxide film is improved, and whereby the capacitor is highly stabilized in various basic properties such as capacitance, dielectric loss (tan ?), leakage current and short circuit defective ratio and also in the reflow soldering heat resistance and moisture resistance load characteristics. These solid electrolytic capacitor can be obtained by forming electrically conducting polymer on a dielectric film by specifying time for dipping of the surface of a valve actiong metal porous body with a solution containing a monomer and with a solution containing an oxidizing agent, time for vaporization of the solvent of the solution containing a monomer, and polymerization conditions after dipping of the solution containing an oxidizing agent.Type: GrantFiled: May 31, 2002Date of Patent: March 15, 2005Assignee: Showa Denko K.K.Inventors: Atsushi Sakai, Ryuji Monden, Yuji Furuta, Katsuhiko Yamazaki, Tatsuo Obata
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Publication number: 20050030703Abstract: A solid electrolytic capacitor includes a valve acting metal having microfine pores, a dielectric film formed on a surface of the valve acting metal, and a solid electrolyte layer provided on the dielectric film, in which at least a portion of the solid electrolyte layer is of a lamellar structure. In particular, a solid electrolytic capacitor includes an electrically conducting polymer having a specified condensed ring structure containing (1) a solid electrolyte layer containing a sulfoquinone anion, and (2) a solid electrolyte layer containing an anthracenesulfonate ion and other anion.Type: ApplicationFiled: September 14, 2004Publication date: February 10, 2005Inventors: Hiroshi Konuma, Koro Shirane, Ryuji Monden, Atsushi Sakai, Yuji Furuta, Katsuhiko Yamazaki, Toru Sawaguchi, Hideko Ohata, Yoshiaki Ikenoue
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Publication number: 20040233615Abstract: The present invention relates to a solid electrolytic capacitor having a masking structure in which the insulation between the anode part and the cathode part can be ensured without fail, to its production method, to a method for coating a masking agent on a solid electrolytic capacitor substrate, and to apparatus therefore. According to the present invention, the masking material covers the dielectric film on the metal material having valve action and sufficiently infiltrates into the core metal made of a metal having valve action while the solid electrolyte is masked by the masking material without fail, so that a solid electrolytic capacitor can be produced that has a reduced leakage current and a reduced stress generated at the reflow treatment or the like.Type: ApplicationFiled: June 28, 2004Publication date: November 25, 2004Applicant: SHOWA DENKO K.K.Inventors: Atsushi Sakai, Ryuji Monden, Hiroshi Nitoh, Toshihiro Okabe, Yuji Furuta, Hideki Ohata, Koro Shirane
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Publication number: 20040212951Abstract: The present invention relates to a solid electrolytic capacitor comprising a solid electrolyte layer and an electrically conducting layer comprising metallic powder or an electrically conducting layer comprising an electrically conducting carbon layer and a layer formed thereon and comprising metallic powder in which at least one of said layers contains a rubber-like elastic material; a production process thereof; a solid electrolyte for use in the solid electrolytic capacitor; a production process of the solid electrolyte; an electrically conducting paste for use in the solid electrolytic capacitor; and an electrically carbon conducting paste for use in the solid electrolytic capacitor. The solid electrolytic capacitor of the present invention can be made compact and can be endowed with high-capacitance and low-impedance and is excellent in external force-relaxing properties, productivity, heat resistance and moisture resistance, etc.Type: ApplicationFiled: May 18, 2004Publication date: October 28, 2004Applicant: SHOWA DENKO K.K.Inventors: Ryuji Monden, Katsuhiko Yamazaki, Atsushi Sakai, Yuji Furuta, Hideki Ohata, Koro Shirane, Hiroshi Konuma
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Patent number: 6810085Abstract: A data storage, storing input MPEG data for a period corresponding to three clocks, is formed of the data storage (A)1, the data storage (B)2 and the data storage (C)3. The synchronous byte detector 4 detects a synchronous byte (47h) at the time of inputting TS. The TS header processor 5 processes a TS header at the time of inputting TS. The PS header processor 6 processes a PS header at the time of inputting PS. The PES data processor 7 processes PES data containing TS and PS.Type: GrantFiled: May 31, 2001Date of Patent: October 26, 2004Assignee: NEC CorporationInventor: Yuji Furuta
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Patent number: 6807049Abstract: A solid electrolytic capacitor includes a valve acting metal having microfine pores, a dielectric film formed on a surface of the valve acting metal, and a solid electrolyte layer provided on the dielectric film, in which at least a portion of the solid electrolyte layer is of a lamellar structure. In particular, a solid electrolytic capacitor includes an electrically conducting polymer having a specified condensed ring structure containing (1) a solid electrolyte layer containing a sulfoquinone anion having a sulfo anion group and a quinone structure and other anion, and (2) a solid electrolyte layer containing an anthracenesulfonate ion and other anion.Type: GrantFiled: September 26, 2001Date of Patent: October 19, 2004Assignee: Showa Denko K.K.Inventors: Hiroshi Konuma, Koro Shirane, Ryuji Monden, Atsushi Sakai, Yuji Furuta, Katsuhiko Yamazaki, Toru Sawaguchi, Hideki Ohata, Yoshiaki Ikenoue
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Patent number: 6790384Abstract: A solid electrolytic capacitor includes a valve acting metal having microfine pores, a dielectric film formed on a surface of the valve acting metal, and a solid electrolyte layer provided on the dielectric film, in which at least a portion of the solid electrolyte layer is of a lamellar structure. In particular, a solid electrolytic capacitor includes an electrically conducting polymer having a specified condensed ring structure containing (1) a solid electrolyte layer containing a sulfoquinone anion having a sulfo anion group and a quinone structure and other anion, and (2) a solid electrolyte layer containing an anthracenesulfonate ion and other anion.Type: GrantFiled: September 25, 2001Date of Patent: September 14, 2004Assignee: Showa Denko K.K.Inventors: Hiroshi Konuma, Koro Shirane, Ryuji Monden, Atsushi Sakai, Yuji Furuta, Katsuhiko Yamazaki, Toru Sawaguchi, Hideko Ohata, Yoshiaki Ikenoue
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Patent number: 6783703Abstract: The present invention relates to a solid electrolytic capacitor comprising a solid electrolyte layer and an electrically conducting layer comprising metallic powder or an electrically conducting layer comprising an electrically conducting carbon layer and a layer formed thereon and comprising metallic powder in which at least one of said layers contains a rubber-like elastic material; a production process thereof; a solid electrolyte for use in the solid electrolytic capacitor; a production process of the solid electrolyte; an electrically conducting paste for use in the solid electrolytic capacitor; and an electrically carbon conducting paste for use in the solid electrolytic capacitor. The solid electrolytic capacitor of the present invention can be made compact and can be endowed with high-capacitance and low-impedance and is excellent in external force-relaxing properties, productivity, heat resistance and moisture resistance, etc.Type: GrantFiled: January 24, 2002Date of Patent: August 31, 2004Assignee: Showa Denko Kabushiki KaishaInventors: Ryuji Monden, Katsuhiko Yamazaki, Atsushi Sakai, Yuji Furuta, Hideki Ohata, Koro Shirane, Hiroshi Konuma
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Publication number: 20040136145Abstract: A solid electrolytic capacitor comprising (1) an electrically conducting polymer composition formed on the surface of an oxide film which is formed on a valve-acting metal, by specifying the viscosity of an oxidizing agent solution and/or a monomer solution, particularly by specifying the viscosity to less than about 100 cp, (2) an electroconducting polymer composition formed on the surface of an oxide film layer which is formed on a valve-acting metal, wherein the electroconducting polymer layer comprising a monomer compound or a derivative thereof as a repeating unit and also containing an anionic dopant is polymerized by setting the humidity in the atmosphere to from about 10% to less than about 60%; (3) an anode body having provided on the outer surface thereof a solid electrolyte formed of an electrically conducting polymer containing a lamellar structure, wherein the solid electrolyte provided on the dielectric film formed on a valve acting metal occupies from about 10 to about 95% of the space in a porType: ApplicationFiled: December 24, 2003Publication date: July 15, 2004Applicant: SHOWA DENKO K.K.Inventors: Atsushi Sakai, Ryuji Monden, Toru Sawaguchi, Katsuhiko Yamazaki, Yuji Furuta, Hideki Ohata
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Publication number: 20040116193Abstract: In a boot including a larger cylindrical portion having a thick-walled portion and a thin-walled portion continuing smoothly in the circumferential direction on the inner peripheral surface, a ring groove coming full circle on the outer peripheral surface of the larger cylindrical portion is formed.Type: ApplicationFiled: October 14, 2003Publication date: June 17, 2004Inventors: Mayuki Toriumi, Yuji Furuta, Yoshikazu Mori
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Patent number: 6717535Abstract: A system and method that prevent an input of variable length codes in which short length codes continue from being interrupted without an increase of a circuit scale are provided. The system comprises a variable length decoding device for decoding variable length codes, a buffer for buffering the variable length codes to be supplied to the variable length decoding device, a detector for detecting whether or not a occupation rate of the variable length codes in the buffer has increased, and a discarder for discarding the variable length codes to be supplied to the buffer when the detected result by the detector represents that the occupation rate of the variable length codes in the buffer has increased. The system further comprises an elementary stream extractor, disposed between the discarding device and the buffer, for extracting an elementary stream defined in MPEG standard.Type: GrantFiled: May 10, 2002Date of Patent: April 6, 2004Assignee: NEC CorporationInventor: Yuji Furuta
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Patent number: 6706078Abstract: A solid electrolytic capacitor is obtained by mounting a plurality of single plate capacitor elements within a chip by employing a stacking structure such as parallel stacking, opposing stacking, each layer-opposing stacking or closest stacking. As a result, a compact and high-capacitance element can be easily manufactured. The single plate capacitor element is preferably an element having an unfolded fan-like shape.Type: GrantFiled: March 13, 2002Date of Patent: March 16, 2004Assignee: Showa Denko Kabushiki KaishaInventors: Hiroshi Nitoh, Atsushi Sakai, Wataru Minamida, Yuji Furuta
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Patent number: 6695706Abstract: Ring-shaped ridges (23, 24) that extends in the circumferential direction and is capable of falling toward a bellows portion (12) when a larger cylindrical portion (11) comes into press contact therewith are formed on the outer peripheral surface of the bushing (2). Since the ring-shaped ridges (23, 24) fall toward the bellows portion (12) when being tightened, when a pressure is exerted from grease, the pressure acts in the direction of restoring the ring-shaped ridge (23) to the original posture. Therefore, the ring-shaped ridge (23) serves as a dam and is brought into press contact with the larger cylindrical portion (11) at a high bearing pressure.Type: GrantFiled: October 4, 2002Date of Patent: February 24, 2004Assignee: Toyoda Gosei Co., Ltd.Inventor: Yuji Furuta
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Patent number: 6696138Abstract: A solid electrolytic capacitor comprises a porous valve acting metal having formed thereon a dielectric film and a solid electrolyte formed on the dielectric film. The solid electrolyte occupies from 10 to 95% of the space within a pore of the porous metal.Type: GrantFiled: November 26, 2002Date of Patent: February 24, 2004Assignee: Showa Denko K.K.Inventors: Atsushi Sakai, Ryuji Monden, Toru Sawaguchi, Katsuhiko Yamazaki, Yuji Furuta, Hideki Ohata
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Publication number: 20030148023Abstract: A solid electrolytic capacitor comprising (1) an electrically conducting polymer composition formed on the surface of an oxide film which is formed on a valve-acting metal, by specifying the viscosity of an oxidizing agent solution and/or a monomer solution, particularly by specifying the viscosity to less than about 100 cp, (2) an electroconducting polymer composition formed on the surface of an oxide film layer which is formed on a valve-acting metal, wherein the electroconducting polymer layer comprising a monomer compound or a derivative thereof as a repeating unit and also containing an anionic dopant is polymerized by setting the humidity in the atmosphere to from about 10% to less than about 60%; (3) an anode body having provided on the outer surface thereof a solid electrolyte formed of an electrically conducting polymer containing a lamellar structure, wherein the solid electrolyte provided on the dielectric film formed on a valve acting metal occupies from about 10 to about 95% of the space in a porType: ApplicationFiled: November 26, 2002Publication date: August 7, 2003Applicant: SHOWA DENKO K.K.Inventors: Atsushi Sakai, Ryuji Monden, Toru Sawaguchi, Katsuhiko Yamazaki, Yuji Furuta, Hideki Ohata
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Publication number: 20030090859Abstract: An electrode for electrolytic capacitors having a large capacitance and having excellent tan &dgr;, heat resistance, humidity resistance and stability. An electrolytic capacitor using the electrode. An electrode obtained by attaching a compound having a siloxane bond onto the surface of an electrode body comprising a valve-acting metal having formed thereon a dielectric film. The compound having a siloxane bond is attached by coating, dipping or vapor deposition. A solid electrolytic capacitor obtained by forming an electrolyte comprising an electrically conducting polymer on the electrode.Type: ApplicationFiled: October 2, 2002Publication date: May 15, 2003Applicant: SHOWA DENKO K.K.Inventors: Ryuji Monden, Atsushi Sakai, Yuji Furuta, Hideki Ohata
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Publication number: 20030069075Abstract: Ring-shaped ridges (23, 24) that extends in the circumferential direction and is capable of falling toward a bellows portion (12) when a larger cylindrical portion (11) comes into press contact therewith are formed on the outer peripheral surface of the bushing (2). Since the ring-shaped ridges (23, 24) fall toward the bellows portion (12) when being tightened, when a pressure is exerted from grease, the pressure acts in the direction of restoring the ring-shaped ridge (23) to the original posture. Therefore, the ring-shaped ridge (23) serves as a dam and is brought into press contact with the larger cylindrical portion (11) at a high bearing pressure.Type: ApplicationFiled: October 4, 2002Publication date: April 10, 2003Inventor: Yuji Furuta