Patents by Inventor Naoto Sasada
Naoto Sasada 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: 11937495Abstract: An organic light-emitting device containing both a compound represented by the following general formula (1) and a compound represented by the following general formula (2) has a high light emission efficiency. The rings a to c each are a benzene ring that can be optionally condensed, R1 and R2 each represent a substituted or unsubstituted aryl group, etc., four of R31 to R35 each are a substituted or unsubstituted carbazol-9-yl group, but all of these four are not the same, and the remaining one is a hydrogen atom, a cyano group, etc.Type: GrantFiled: August 7, 2019Date of Patent: March 19, 2024Assignees: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION, KWANSEI GAKUIN EDUCATIONAL FOUNDATION, KYULUX, INC.Inventors: Hajime Nakanotani, Takuji Hatakeyama, Yasuhiro Kondo, Yasuyuki Sasada, Motoki Yanai, Chin-Yiu Chan, Masaki Tanaka, Hiroki Noda, Chihaya Adachi, Yoshitake Suzuki, Naoto Notsuka
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Patent number: 10097104Abstract: A high voltage generation circuit is equipped with an AC power source, a positive polarity high voltage generating circuit, and a negative polarity high voltage generating circuit. A phase converter that converts the phase of an AC voltage supplied from the AC power source is disposed between the AC power source and the positive polarity high voltage generating circuit, or between the AC power source and the negative polarity high voltage generating circuit.Type: GrantFiled: February 14, 2017Date of Patent: October 9, 2018Assignee: SMC CORPORATIONInventors: Naoto Sasada, Tomokazu Hariya, Takayuki Toshida
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Patent number: 9812847Abstract: An ionizer includes: a positive-side transformer, and a negative-side transformer; a positive-side high-voltage output circuit that has a first input terminal and a second input terminal that are respectively connected to a ground terminal and a power supply terminal, the ground terminal and power supply terminal being provided on the secondary of the positive-side transformer, and also has a first output terminal from which a direct-current positive high voltage is output; a negative-side high-voltage output circuit that has a third input terminal and a fourth input terminal that are respectively connected to a ground terminal and a power supply terminal, the ground terminal and power supply terminal being provided on the secondary of the negative-side transformer, and also has a second output terminal from which a direct-current negative high voltage is output; and a discharge electrode connected to the first output terminal.Type: GrantFiled: November 4, 2015Date of Patent: November 7, 2017Assignee: SMC CORPORATIONInventors: Naoto Sasada, Suguru Konno, Takashi Yasuoka
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Publication number: 20170257036Abstract: A high voltage generation circuit is equipped with an AC power source, a positive polarity high voltage generating circuit, and a negative polarity high voltage generating circuit. A phase converter that converts the phase of an AC voltage supplied from the AC power source is disposed between the AC power source and the positive polarity high voltage generating circuit, or between the AC power source and the negative polarity high voltage generating circuit.Type: ApplicationFiled: February 14, 2017Publication date: September 7, 2017Applicant: SMC CorporationInventors: Naoto SASADA, Tomokazu Hariya, Takayuki Toshida
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Publication number: 20160157328Abstract: An ionizer includes: a positive-side transformer, and a negative-side transformer; a positive-side high-voltage output circuit that has a first input terminal and a second input terminal that are respectively connected to a ground terminal and a power supply terminal, the ground terminal and power supply terminal being provided on the secondary of the positive-side transformer, and also has a first output terminal from which a direct-current positive high voltage is output; a negative-side high-voltage output circuit that has a third input terminal and a fourth input terminal that are respectively connected to a ground terminal and a power supply terminal, the ground terminal and power supply terminal being provided on the secondary of the negative-side transformer, and also has a second output terminal from which a direct-current negative high voltage is output; and a discharge electrode connected to the first output terminal.Type: ApplicationFiled: November 4, 2015Publication date: June 2, 2016Applicant: SMC CORPORATIONInventors: Naoto SASADA, Suguru KONNO, Takashi YASUOKA
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Patent number: 9351386Abstract: A polarity control unit includes a flag storage unit that stores any one of a first polarity pattern by which a positive direct-current voltage is applied to discharge needles in a first group and a negative direct-current voltage is applied to discharge needles in a second group and a second polarity pattern by which a negative direct-current voltage is applied to the discharge needles in the first group and a positive direct-current voltage is applied to the discharge needles in the second group, a flag update unit that rewrites one flag stored in the flag storage unit to another flag when a power switch is turned on from its off state or is turned off from its on state, and a command unit that commands a polarity pattern corresponding to the flag stored in the flag storage unit to be output from the polarity output unit.Type: GrantFiled: September 30, 2014Date of Patent: May 24, 2016Assignee: SMC CORPORATIONInventors: Takayuki Toshida, Tomokazu Hariya, Naoto Sasada
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Patent number: 9338867Abstract: An ionizer includes a polarity output unit that can selectively output, to a discharge unit, one of a first polarity pattern where the polarity output unit applies a positive direct-current voltage to a first group of discharge needles and applies a negative direct-current voltage to a second group of discharge needles and a second polarity pattern where the polarity output unit applies a negative direct-current voltage to the first group of discharge needles and applies a positive direct-current voltage to the second group of discharge needles and a polarity control unit configured to control the first and second polarity patterns. The polarity control unit includes a current detection unit configured to detect respective direct currents passing through the first group of discharge needles and the second group of discharge needles.Type: GrantFiled: October 9, 2014Date of Patent: May 10, 2016Assignee: SMC CORPORATIONInventors: Takayuki Toshida, Tomokazu Hariya, Naoto Sasada
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Publication number: 20150124368Abstract: An ionizer includes a polarity output unit that can selectively output, to a discharge unit, one of a first polarity pattern where the polarity output unit applies a positive direct-current voltage to a first group of discharge needles and applies a negative direct-current voltage to a second group of discharge needles and a second polarity pattern where the polarity output unit applies a negative direct-current voltage to the first group of discharge needles and applies a positive direct-current voltage to the second group of discharge needles and a polarity control unit configured to control the first and second polarity patterns. The polarity control unit includes a current detection unit configured to detect respective direct currents passing through the first group of discharge needles and the second group of discharge needles.Type: ApplicationFiled: October 9, 2014Publication date: May 7, 2015Applicant: SMC CorporationInventors: Takayuki TOSHIDA, Tomokazu HARIYA, Naoto SASADA
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Patent number: 9025302Abstract: In an ionizer, two output resistors are connected to a needle electrode through a switch unit. DC high voltage generating circuits, respectively, generate DC high voltages continuously during operation of the ionizer. A first switch and a second switch, which constitute the switch unit, are turned ON in mutually different time bands, respectively.Type: GrantFiled: August 14, 2013Date of Patent: May 5, 2015Assignee: SMC Kabushiki KaishaInventors: Tomokazu Hariya, Satoshi Kitano, Naoto Sasada
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Publication number: 20150109714Abstract: A polarity control unit includes a flag storage unit that stores any one of a first polarity pattern by which a positive direct-current voltage is applied to discharge needles in a first group and a negative direct-current voltage is applied to discharge needles in a second group and a second polarity pattern by which a negative direct-current voltage is applied to the discharge needles in the first group and a positive direct-current voltage is applied to the discharge needles in the second group, a flag update unit that rewrites one flag stored in the flag storage unit to another flag when a power switch is turned on from its off state or is turned off from its on state, and a command unit that commands a polarity pattern corresponding to the flag stored in the flag storage unit to be output from the polarity output unit.Type: ApplicationFiled: September 30, 2014Publication date: April 23, 2015Applicant: SMC CorporationInventors: Takayuki TOSHIDA, Tomokazu Hariya, Naoto Sasada
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Publication number: 20140071579Abstract: In an ionizer, two output resistors are connected to a needle electrode through a switch unit. DC high voltage generating circuits, respectively, generate DC high voltages continuously during operation of the ionizer. A first switch and a second switch, which constitute the switch unit, are turned ON in mutually different time bands, respectively.Type: ApplicationFiled: August 14, 2013Publication date: March 13, 2014Applicant: SMC KABUSHIKI KAISHAInventors: Tomokazu Hariya, Satoshi Kitano, Naoto Sasada
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Patent number: D806828Type: GrantFiled: August 19, 2016Date of Patent: January 2, 2018Assignee: SMC CORPORATIONInventors: Takayuki Toshida, Tomokazu Hariya, Naoto Sasada
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Patent number: D826848Type: GrantFiled: April 10, 2017Date of Patent: August 28, 2018Assignee: SMC CORPORATIONInventors: Takayuki Toshida, Tomokazu Hariya, Naoto Sasada
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Patent number: D843547Type: GrantFiled: August 19, 2016Date of Patent: March 19, 2019Assignee: SMC CORPORATIONInventors: Takayuki Toshida, Tomokazu Hariya, Naoto Sasada