Patents by Inventor Hiroyuki Iechi
Hiroyuki Iechi 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: 20100126885Abstract: A sensor device includes a porous insulating layer formed of a porous insulating material; a first electrode having a first opening portion formed on a first side of the porous insulating layer; a second electrode having a second opening portion corresponding to the first opening portion formed on a second side of the porous insulating layer; an insulating layer formed on the second electrode; and a molecular recognition material disposed on internal walls of an opening in the porous insulating layer.Type: ApplicationFiled: November 10, 2009Publication date: May 27, 2010Inventors: Hiroyuki IECHI, Kazuhiro Kudo
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Patent number: 7420204Abstract: An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.Type: GrantFiled: June 21, 2006Date of Patent: September 2, 2008Assignee: Ricoh Company, Ltd.Inventors: Hiroyuki Iechi, Yoshikazu Akiyama, Hiroshi Kondoh, Takanori Tano
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Patent number: 7276728Abstract: A vertical organic transistor comprises a substrate, a first electrode positioned over the substrate, a first semiconductor layer formed over the first electrode, a second electrode formed on the first semiconductor layer and shaped into a prescribed pattern, a second semiconductor layer formed over the second electrode and the first semiconductor layer, and a third electrode formed over the second semiconductor layer. The first semiconductor layer and the second semiconductor layer are made of different semiconductor materials.Type: GrantFiled: December 6, 2005Date of Patent: October 2, 2007Assignee: Ricoh Company, Ltd.Inventors: Hiroyuki Iechi, Kazuhiro Kudoh
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Publication number: 20060243971Abstract: An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.Type: ApplicationFiled: June 21, 2006Publication date: November 2, 2006Inventors: Hiroyuki Iechi, Yoshikazu Akiyama, Hiroshi Kondoh, Takanori Tano
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Patent number: 7126153Abstract: An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.Type: GrantFiled: December 16, 2002Date of Patent: October 24, 2006Assignee: Ricoh Company, Ltd.Inventors: Hiroyuki Iechi, Yoshikazu Akiyama, Hiroshi Kondoh, Takanori Tano
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Publication number: 20060086933Abstract: A vertical organic transistor comprises a substrate, a first electrode positioned over the substrate, a first semiconductor layer formed over the first electrode, a second electrode formed on the first semiconductor layer and shaped into a prescribed pattern, a second semiconductor layer formed over the second electrode and the first semiconductor layer, and a third electrode formed over the second semiconductor layer. The first semiconductor layer and the second semiconductor layer are made of different semiconductor materials.Type: ApplicationFiled: December 6, 2005Publication date: April 27, 2006Inventors: Hiroyuki Iechi, Kazuhiro Kudoh
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Patent number: 7002176Abstract: A vertical organic transistor comprises a substrate, a first electrode positioned over the substrate, a first semiconductor layer formed over the first electrode, a second electrode formed on the first semiconductor layer and shaped into a prescribed pattern, a second semiconductor layer formed over the second electrode and the first semiconductor layer, and a third electrode formed over the second semiconductor layer. The first semiconductor layer and the second semiconductor layer are made of different semiconductor materials.Type: GrantFiled: May 16, 2003Date of Patent: February 21, 2006Assignees: Ricoh Company, Ltd., Kazuhiro KudohInventors: Hiroyuki Iechi, Kazuhiro Kudoh
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Publication number: 20040004215Abstract: A vertical organic transistor comprises a substrate, a first electrode positioned over the substrate, a first semiconductor layer formed over the first electrode, a second electrode formed on the first semiconductor layer and shaped into a prescribed pattern, a second semiconductor layer formed over the second electrode and the first semiconductor layer, and a third electrode formed over the second semiconductor layer. The first semiconductor layer and the second semiconductor layer are made of different semiconductor materials.Type: ApplicationFiled: May 16, 2003Publication date: January 8, 2004Inventors: Hiroyuki Iechi, Kazuhiro Kudoh
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Publication number: 20030213952Abstract: An organic transistor is capable of emitting light at high luminescence efficiency, operating at high speed, handling large electric power, and can be manufactured at low cost. The organic transistor includes an organic semiconductor layer between a source electrode and a drain electrode, and gate electrodes shaped like a comb or a mesh, which are provided at intervals approximately in the central part of the organic semiconductor layer approximately parallel to the source electrode and the drain electrode. The organic semiconductor layer consists of an electric field luminescent organic semiconductor material such as compounds of naphthalene, anthracene, tetracene, pentacene, hexacene, a phthalocyanine system compound, an azo system compound, a perylene system compound, a triphenylmethane compound, a stilbene compound, poly N-vinyl carbazole, and poly vinyl pyrene.Type: ApplicationFiled: December 16, 2002Publication date: November 20, 2003Inventors: Hiroyuki Iechi, Yoshikazu Akiyama, Hiroshi Kondoh, Takanori Tano
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Patent number: 5900336Abstract: A negative electrode for a lithium secondary battery includes at least two kinds of carbon materials with a spacing of lattice plane (d.sub.002) of 3.4 .ANG. or less in the direction of the C axis thereof. A lithium secondary battery using this negative electrode is provided.Type: GrantFiled: August 6, 1997Date of Patent: May 4, 1999Assignee: Ricoh Company, Ltd.Inventors: Toshiyuki Kabata, Yoshiko Kurosawa, Toshiyuki Ohsawa, Nobuo Katagiri, Okitoshi Kimura, Toshishige Fujii, Yoshitaka Hayashi, Hiroyuki Iechi, Yumiko Suzuki, Tomohiro Inoue
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Patent number: 5684523Abstract: A light emitting diode chip includes a substrate carrying thereon a number of light emitting diodes aligned in a row to form an array for producing a number of optical beams parallel to each other in a first direction, and monitoring element provided monolithically on the substrate for detecting the power of the optical beams produced by the light emitting diodes, wherein the monitoring element includes: a reference light emitting diode having a structure identical to the light emitting diodes in the array for producing an optical beam in a second direction perpendicular to the first direction; and a photodiode having a structure identical to the light emitting diodes in the array and separated from the reference light emitting diode by an isolation groove for detecting the optical beam produced by the reference light emitting diode.Type: GrantFiled: June 6, 1995Date of Patent: November 4, 1997Assignees: Ricoh Company, Ltd., Ricoh Research Institute of General Electronics Co., Ltd.Inventors: Shunichi Satoh, Takashi Takahashi, Hiroyuki Iechi, Tomoaki Yoshida, deceased, Chizuru Yoshida, legal representative, Hirokazu Iwata, Takaaki Miyashita
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Patent number: 5362673Abstract: A semiconductor light emitting device able to emit a high intensity, stable light. An edge surface lighting type light emitting diode array is formed on a substrate. A light emitting edge surface of each light emitting element is formed by an etching method. A surface of the substrate in front of the light emitting edge surface is formed in multiple stage so that a light beam is not reflected by the surface of the substrate.Type: GrantFiled: December 7, 1993Date of Patent: November 8, 1994Assignees: Ricoh Company, Ltd., Ricoh Research Institute of General Electronics Co., Ltd.Inventor: Hiroyuki Iechi
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Patent number: 5294815Abstract: A semiconductor light emitting device able to emit a high intensity, stable light. An edge surface lighting type light emitting diode array is formed on a substrate. A light emitting edge surface of each light emitting element is formed by an etching method. A surface of the substrate in front of the light emitting edge surface is formed in multiple stage so that a light beam is not reflected by the surface of the substrate.Type: GrantFiled: July 21, 1992Date of Patent: March 15, 1994Assignees: Ricoh Company, Ltd., Ricoh Research Institute of General Electronics Co., Ltd.Inventor: Hiroyuki Iechi
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Patent number: 5061974Abstract: A semiconductor light-emitting device includes a pair of clad layers and an active layer sandwiched thereby which together are disposed between a substrate and a cap layer so as to form a monolithic array of double-heterojunction regions each including therein a plurality of light-emitting portions of the active layer for emitting light from the end face thereof so that the light-emitting portions are arrayed in a row and electrically separated from each other. The substrate is formed at one side thereof with a concave and convex configuration following a stripe pattern so that the clad layers, active layers and the cap layers are each arranged in the form of a corrugated configuration following the concave and convex configuration of the substrate.Type: GrantFiled: December 22, 1989Date of Patent: October 29, 1991Assignees: Ricoh Company, Ltd., Ricoh Research Institute of General Electronics Co.Inventors: Noriaki Onodera, Saburo Saski, Hiroyuki Iechi