Patents by Inventor Keiichiro Doi
Keiichiro Doi 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: 9777838Abstract: To reliably prevent entrance of electro-magnetic waves in a door that closes an opening portion formed in an airframe of an aircraft. A gasket seal 20 which is arranged between an opening portion 12 formed in an airframe of an aircraft and a door 13 for closing the opening portion 12, includes: a gasket seal body that is made of a rubber material; and conductive fiber 24 that covers a surface of the gasket seal body. When the door 13 is in a closed state, the gasket seal 20 whose surface is made conductive is abutted against a striker 30 provided on a skin 11 side of the airframe and made of a conductive material. The door 13 and the skin 11 of the airframe are electrically connected together via the conductive fiber 24 and the striker 30, and electro-magnetic waves can be reliably shielded.Type: GrantFiled: February 28, 2017Date of Patent: October 3, 2017Assignee: MITSUBISHI AIRCRAFT CORPORATIONInventors: Yusaku Yahata, Takashi Yokoi, Keiichiro Doi, Mikishige Ibaragi
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Publication number: 20170167611Abstract: To reliably prevent entrance of electro-magnetic waves in a door that closes an opening portion formed in an airframe of an aircraft. A gasket seal 20 which is arranged between an opening portion 12 formed in an airframe of an aircraft and a door 13 for closing the opening portion 12, includes: a gasket seal body that is made of a rubber material; and conductive fiber 24 that covers a surface of the gasket seal body. When the door 13 is in a closed state, the gasket seal 20 whose surface is made conductive is abutted against a striker 30 provided on a skin 11 side of the airframe and made of a conductive material. The door 13 and the skin 11 of the airframe are electrically connected together via the conductive fiber 24 and the striker 30, and electro-magnetic waves can be reliably shielded.Type: ApplicationFiled: February 28, 2017Publication date: June 15, 2017Inventors: Yusaku YAHATA, Takashi YOKOI, Keiichiro DOI, Mikishige IBARAGI
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Patent number: 9617783Abstract: To reliably prevent entrance of electro-magnetic waves in a door that closes an opening portion formed in an airframe of an aircraft. A gasket seal 20 which is arranged between an opening portion 12 formed in an airframe of an aircraft and a door 13 for closing the opening portion 12, includes: a gasket seal body that is made of a rubber material; and conductive fiber 24 that covers a surface of the gasket seal body. When the door 13 is in a closed state, the gasket seal 20 whose surface is made conductive is abutted against a striker 30 provided on a skin 11 side of the airframe and made of a conductive material. The door 13 and the skin 11 of the airframe are electrically connected together via the conductive fiber 24 and the striker 30, and electro-magnetic waves can be reliably shielded.Type: GrantFiled: September 20, 2012Date of Patent: April 11, 2017Assignee: MITSUBISHI AIRCRAFT CORPORATIONInventors: Yusaku Yahata, Takashi Yokoi, Keiichiro Doi, Mikishige Ibaragi
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Publication number: 20140345199Abstract: To reliably prevent entrance of electro-magnetic waves in a door that closes an opening portion formed in an airframe of an aircraft. A gasket seal 20 which is arranged between an opening portion 12 formed in an airframe of an aircraft and a door 13 for closing the opening portion 12, includes: a gasket seal body that is made of a rubber material; and conductive fiber 24 that covers a surface of the gasket seal body. When the door 13 is in a closed state, the gasket seal 20 whose surface is made conductive is abutted against a striker 30 provided on a skin 11 side of the airframe and made of a conductive material. The door 13 and the skin 11 of the airframe are electrically connected together via the conductive fiber 24 and the striker 30, and electro-magnetic waves can be reliably shielded.Type: ApplicationFiled: September 20, 2012Publication date: November 27, 2014Inventors: Yusaku Yahata, Takashi Yokoi, Keiichiro Doi, Mikishige Ibaragi
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Patent number: 5084744Abstract: In a field effect transistor (JFET) having a compound semiconducting substrate, a buffer layer having a guard-ring, an active layer, source regions, drain regions, and gate regions, the guard-ring is separated from the active layer whereby gate junction capacitance and gate leakage current are lowered without raising a gate resistance value. As a result, noise characteristics and high frequency characteristics can be improved.Type: GrantFiled: March 16, 1988Date of Patent: January 28, 1992Assignee: Victor Company of Japan, Ltd.Inventors: Yoshihiro Hori, Keiichiro Doi, Manabu Endo, Toshiki Yoshida
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Patent number: 4968864Abstract: A cooking utensil comprises a reading member responsive to a recording medium containing a cooking program which is carried out in the cooking utensil, and a control circuit responsive to the cooking program read by the reading member, thereby conducting the cooking program through properly energizing an energization circuit for the cooking utensil. The cooking program may be desirably recorded on the recording medium through input keys of the cooking utensil. The recorded cooking program can be checked whether or not it is recorded with accuracy. Cooking information of the cooking program is indicated by an indicator for representing conditions of the cooking utensil. The cooking program may be modified according to total weight of a foodstuff to be cooked.Type: GrantFiled: December 27, 1978Date of Patent: November 6, 1990Inventors: Keiichiro Doi, Minoru Makita, Masaaki Kowada
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Patent number: 4646282Abstract: A stylus for a capacity change detection type disc system which reads information signals such as audio or video signals out of a track which is formed in a disc surface as an arrangement of pits corresponding to the information signals has a body portion which is made of a diamond. Argon plus ions are implanted in the stylus body portion from the surface of the diamond portion to graphitize the diamond to provide a conductive layer which serves as a detecting electrode portion. The graphitizing rate is highest at the surface portion of the electrode portion which consists of the formed conductive layer. The graphitizing rate changes from the surface portion toward a portion remote from the surface portion, where the graphitizing rate is lowest, with a variation rate smaller than that of the graphitizing rate which would result from a single implantation of ions into the diamond.Type: GrantFiled: April 6, 1984Date of Patent: February 24, 1987Assignee: Victor Company of Japan, LimitedInventors: Hideaki Mizuno, Keiichiro Doi
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Patent number: 4467162Abstract: An improved exciting arrangement for an induction heating apparatus which includes a heating coil disposed in a spaced relation between a top plate for placing a vessel of magnetizable material to be heated and a bottom plate, so as to be impressed with high frequency current, a shielding plate member of non-magnetizable metallic material disposed in a space between the heating coil and the bottom plate, and a coil support member of highly magnetizable material providing a high electrical resistance, disposed between the heating coil and the shielding plate so as to cover part of the peripheral portion of the heating coil.Type: GrantFiled: November 28, 1983Date of Patent: August 21, 1984Assignees: Riccar Co., Ltd., Sharp Kabushiki KaishaInventors: Shigeki Kondo, Yoshio Yamazaki, Tomofumi Iketani, Keiichiro Doi, Seiji Tanaka
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Patent number: 4430542Abstract: The disclosure is directed to an improved electromagnetic cooking apparatus which is so arranged that the maximum voltage to be impressed to a switching transistor employed in it may be lowered to a desired level for a stable operation at high reliability.Type: GrantFiled: September 11, 1981Date of Patent: February 7, 1984Assignees: Riccar Co., Ltd., Sharp Kabushiki KaishaInventors: Shigeki Kondo, Yoshio Yamazaki, Tomofumi Iketani, Seiji Tanaka, Keiichiro Doi
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Patent number: 4410974Abstract: A capacitance detection type record stylus comprises a body of artificial diamond having flat faces lying parallel to the crystal planes {111} and {100} wherein adjoining identical crystal planes are either {111} or {100}. A crystal plane {110} is formed between any two of the adjoining identical crystal planes by lapping the edge between them. A conductive material is deposited on the crystal plane {110} to form an electrode for detecting signals recorded as geometric variations on a recording medium. Because of the aligned carbon atoms beneath the crystal plane {110}, a substantial amount of the conductive material penetrates deeply into the diamond making the electrode resistant to wear.Type: GrantFiled: September 8, 1981Date of Patent: October 18, 1983Assignee: Victor Company of Japan, LimitedInventors: Keiji Segawa, Masaki Murakami, Keiichiro Doi
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Patent number: 4351996Abstract: An improved induction heating apparatus as applied, for example, to a cooking oven in which there is employed a magnet having a bore formed in it, with a thermistor being installed on the top plate of the apparatus in a position corresponding to the bore so as to eliminate possible breakage of the thermistor, while the curie temperature of the magnet member is set at a predetermined level for further improvement in safety.Type: GrantFiled: January 28, 1981Date of Patent: September 28, 1982Assignees: Riccar Co., Ltd., Sharp Kabushiki KaishaInventors: Shigeki Kondo, Tomofumi Iketani, Yoshio Yamazaki, Keiichiro Doi, Seiji Tanaka
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Patent number: 4339646Abstract: A heating appliance comprises a generation circuit of a magnetron for effecting a series of cooking operations at least one of which requires manual cooking operation by an operator adapted to a foodstuff therein and an indicator for announcing to the operator that the manual cooking operation is to be conducted concerning the foodstuff.Type: GrantFiled: December 29, 1978Date of Patent: July 13, 1982Assignee: Sharp Kabushiki KaishaInventors: Keiichiro Doi, Minoru Makita, Masaaki Kowada
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Patent number: 4309585Abstract: A microwave oven comprises a digital control circuit for controlling microwave generation, and a multi-digit digital display unit for displaying a cooking condition. A determination system is associated with a door switch for developing a display control signal when a cook start switch is actuated before an oven door is tightly closed. In response to the display control signal, an alarm display, for example, "DOOR" is provided on the multi-digit digital display unit. The microwave oven further comprises a food temperature sensor probe for sensing a temperature of foodstuff being cooked. The multi-digit digital display unit provides another alarm display, for example, "PROBE" if the cook start switch is actuated under the condition where the food temperature sensor probe is not placed in its operative condition even though the food temperature control mode of operation is selected.Type: GrantFiled: December 18, 1979Date of Patent: January 5, 1982Assignee: Sharp Kabushiki KaishaInventors: Keiichiro Doi, Toshihiro Kashiwagi
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Patent number: D267009Type: GrantFiled: October 11, 1979Date of Patent: November 23, 1982Assignee: Sharp CorporationInventor: Keiichiro Doi
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Patent number: D267094Type: GrantFiled: October 11, 1979Date of Patent: November 30, 1982Assignee: Sharp CorporationInventor: Keiichiro Doi