Patents by Inventor Satoshi Takehara
Satoshi Takehara 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: 20230197861Abstract: A nonvolatile storage element includes a substrate; a gate region having a charge holding region and an insulator surrounding an entire surface of the charge holding region; a drain region formed in one of both sides of a lower portion of the gate region; and a source region formed in another one of both the sides. A halogen is distributed in the insulator to cover an entire surface of an upper surface of the charge holding region.Type: ApplicationFiled: February 10, 2023Publication date: June 22, 2023Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Toshiro SAKAMOTO, Satoshi TAKEHARA, Yoshiro YAMAHA, Makoto KOBAYASHI
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Patent number: 11611000Abstract: There is provided a nonvolatile storage element having excellent charge holding characteristics capable of reducing variations in electric characteristics and an analog circuit provided with the same. A nonvolatile storage element is provided with a charge holding region and an insulator surrounding the entire surface of the charge holding region and having halogen distributed in at least one part of a region surrounding the entire surface.Type: GrantFiled: October 3, 2017Date of Patent: March 21, 2023Assignee: Asahi Kasei Microdevices CorporationInventors: Toshiro Sakamoto, Satoshi Takehara, Yoshiro Yamaha, Makoto Kobayashi
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Publication number: 20200295197Abstract: There is provided a nonvolatile storage element having excellent charge holding characteristics capable of reducing variations in electric characteristics and an analog circuit provided with the same. A nonvolatile storage element is provided with a charge holding region and an insulator surrounding the entire surface of the charge holding region and having halogen distributed in at least one part of a region surrounding the entire surface.Type: ApplicationFiled: October 3, 2017Publication date: September 17, 2020Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Toshiro SAKAMOTO, Satoshi TAKEHARA, Yoshiro YAMAHA, Makoto KOBAYASHI
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Patent number: 10551314Abstract: A small-size reliable gas sensor that can reduce a measurement error can be provided. The gas sensor includes a first light source; a first sensor unit and a second sensor unit disposed to receive light output from the first light source; a first substrate having a first principal surface on which the first light source and the first sensor unit are provided; and a second substrate having a first principal surface on which the second sensor unit is provided. The first sensor unit is disposed at a location where light output from the first light source and reflected on the second principal surface strikes the first principal surface of the first substrate.Type: GrantFiled: August 9, 2018Date of Patent: February 4, 2020Assignee: Asahi Kasei Microdevices CorporationInventors: Edson Gomes Camargo, Satoshi Takehara
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Patent number: 10446567Abstract: To provide a nonvolatile storage element capable of being formed by an ordinary CMOS process using single layer polysilicon without requiring exclusive forming process and a reference voltage generation circuit with high versatility and high precision. A reference voltage generation circuit includes nonvolatile storage elements formed of single layer polysilicon. The nonvolatile storage elements each include a MOS transistor including a floating gate, a MOS transistor including a floating gate, and a MOS transistor including a floating gate.Type: GrantFiled: March 19, 2018Date of Patent: October 15, 2019Assignee: Asahi Kasei Microdevices CorporationInventors: Toshiro Sakamoto, Satoshi Takehara
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Publication number: 20190072489Abstract: A small-size reliable gas sensor that can reduce a measurement error can be provided. The gas sensor includes a first light source; a first sensor unit and a second sensor unit disposed to receive light output from the first light source; a first substrate having a first principal surface on which the first light source and the first sensor unit are provided; and a second substrate having a first principal surface on which the second sensor unit is provided. The first sensor unit is disposed at a location where light output from the first light source and reflected on the second principal surface strikes the first principal surface of the first substrate.Type: ApplicationFiled: August 9, 2018Publication date: March 7, 2019Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Edson Gomes CAMARGO, Satoshi TAKEHARA
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Publication number: 20180286880Abstract: To provide a nonvolatile storage element capable of being formed by an ordinary CMOS process using single layer polysilicon without requiring exclusive forming process and a reference voltage generation circuit with high versatility and high precision. A reference voltage generation circuit includes nonvolatile storage elements formed of single layer polysilicon. The nonvolatile storage elements each include a MOS transistor including a floating gate, a MOS transistor including a floating gate, and a MOS transistor including a floating gate.Type: ApplicationFiled: March 19, 2018Publication date: October 4, 2018Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Toshiro SAKAMOTO, Satoshi TAKEHARA
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Patent number: 10082464Abstract: A small-size reliable gas sensor that can reduce a measurement error can be provided. The gas sensor includes: a first light source (20); a first sensor unit (31) and a second sensor unit (32) disposed to receive light output from the first light source (20); a first substrate (41) having a first principal surface (411) on which the first light source (20) and the first sensor unit (31) are provided; and a second substrate (42) having a first principal surface (422) on which the second sensor unit (32) is provided. The first sensor unit (31) is disposed at a location where light output from the first light source (20) and reflected on the second principal surface (412) strikes the first principal surface (422) of the first substrate (41).Type: GrantFiled: September 26, 2014Date of Patent: September 25, 2018Assignee: Asahi Kasei Microdevices CorporationInventors: Edson Gomes Camargo, Satoshi Takehara
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Patent number: 9666287Abstract: A voltage detector for detecting whether an input voltage is no lower than a predetermined threshold voltage, includes a reference voltage generator configured to generate a reference voltage, and a comparator configured to receive the input voltage and the reference voltage and to detect whether the input voltage is no lower than the threshold voltage that is determined by the reference voltage. Here, the reference voltage generator includes a first write MOS transistor, a second write MOS transistor, a first output MOS transistor and a second output MOS transistor each including a control gate and a floating gate.Type: GrantFiled: April 28, 2016Date of Patent: May 30, 2017Assignee: Asahi Kasei Microdevices CorporationInventors: Yoshiro Yamaha, Satoshi Takehara
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Publication number: 20160240258Abstract: A voltage detector for detecting whether an input voltage is no lower than a predetermined threshold voltage, includes a reference voltage generator configured to generate a reference voltage, and a comparator configured to receive the input voltage and the reference voltage and to detect whether the input voltage is no lower than the threshold voltage that is determined by the reference voltage. Here, the reference voltage generator includes a first write MOS transistor, a second write MOS transistor, a first output MOS transistor and a second output MOS transistor each including a control gate and a floating gate.Type: ApplicationFiled: April 28, 2016Publication date: August 18, 2016Applicant: Asahi Kasei Microdevices CorporationInventors: Yoshiro YAMAHA, Satoshi TAKEHARA
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Publication number: 20160231244Abstract: A small-size reliable gas sensor that can reduce a measurement error can be provided. The gas sensor includes: a first light source (20); a first sensor unit (31) and a second sensor unit (32) disposed to receive light output from the first light source (20); a first substrate (41) having a first principal surface (411) on which the first light source (20) and the first sensor unit (31) are provided; and a second substrate (42) having a first principal surface (422) on which the second sensor unit (32) is provided. The first sensor unit (31) is disposed at a location where light output from the first light source (20) and reflected on the second principal surface (412) strikes the first principal surface (422) of the first substrate (41).Type: ApplicationFiled: September 26, 2014Publication date: August 11, 2016Applicant: ASAHI KASEI MICRODEVICES CORPORATIONInventors: Edson Gomes CAMARGO, Satoshi TAKEHARA
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Patent number: 7683155Abstract: A phenolic novolak having the contents of a monomeric phenol and a dimeric phenol and a degree of dispersion controlled can be obtained in high yield by a process for production of a phenolic novolak having a step of conducting a heterogeneous reaction of a phenol and an aldehyde in the presence of a phosphoric acid and an unreactive oxygen-containing organic solvent as a reaction cosolvent.Type: GrantFiled: August 29, 2003Date of Patent: March 23, 2010Assignee: Asahi Organic Chemicals Industry Col., Ltd.Inventors: Shigeki Inatomi, Noboru Tanoue, Motoji Yokoyama, Hirofumi Shinohara, Satoshi Takehara
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Patent number: 7233322Abstract: To reduce degradation of image quality when constructing anode line drive circuits in a display panel drive circuit from a plurality of IC chips. Dummy drive output and proper drive output of an adjoining IC chip are switched in predetermined cycles and supplied to an anode line. This makes it possible to reduce variation in adjacent output currents among IC chips. Thus, it is possible to reduce luminance differences in display areas caused by differences in current driving capacity among IC chips and reduce degradation of image quality when an anode line drive circuit is constructed from a plurality of IC chips.Type: GrantFiled: August 22, 2002Date of Patent: June 19, 2007Assignee: Asahi Kasei Microsystems Co., Ltd.Inventors: Satoshi Takehara, Yoshirou Yamaha
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Publication number: 20060241276Abstract: A phenolic novolak having the contents of a monomeric phenol and a dimeric phenol and a degree of dispersion controlled can be obtained in high yield by a process for production of a phenolic novolak having a step of conducting a heterogeneous reaction of a phenol and an aldehyde in the presence of a phosphoric acid and an unreactive oxygen-containing organic solvent as a reaction cosolvent.Type: ApplicationFiled: August 29, 2003Publication date: October 26, 2006Applicant: ASAHI ORGANIC CHEMICALS INDUSTRY CO., LTD.Inventors: Shigeki Inatomi, Noboru Tanoue, Motoji Yokoyama, Hirofumi Shinohara, Satoshi Takehara
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Publication number: 20040008074Abstract: To reduce degradation of image quality when constructing anode line drive circuits in a display panel drive circuit from a plurality of IC chips.Type: ApplicationFiled: April 18, 2003Publication date: January 15, 2004Inventors: Satoshi Takehara, Yoshirou Yamaha