Patents by Inventor Kenji Tomita
Kenji Tomita 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).
-
Publication number: 20240182463Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.Type: ApplicationFiled: August 4, 2023Publication date: June 6, 2024Applicant: Shionogi & Co., Ltd.Inventors: Chika TAKAHASHI, Hidenori MIKAMIYAMA, Toshiyuki AKIYAMA, Kenji TOMITA, Yoshiyuki TAODA, Makoto KAWAI, Kosuke ANAN, Masayoshi MIYAGAWA, Naoyuki SUZUKI
-
Patent number: 11960238Abstract: A drive transmission device includes a drive train including a plurality of drive transmitters, and a container. The plurality of drive transmitters of the drive train transmit a driving force of a drive source to a rotator rotatable around a shaft and a swing member rotatable around a shaft different from the shaft of the rotator. The container contains the drive train.Type: GrantFiled: January 13, 2023Date of Patent: April 16, 2024Assignee: RICOH COMPANY, LTD.Inventors: Kenji Tomita, Ryohhei Ohya
-
Publication number: 20230287004Abstract: The present invention provides the following compounds having anti-viral activity. A1 is CR1AR1B, S or O; A2 is CR2AR2B, S or O; A3 is CR3AR3B, S or O; A4 is CR4AR4B, S or O; the number of hetero atoms among atoms constituting the ring which consists of A1, A2, A3, A4, nitrogen atom adjacent to A1 and carbon atom adjacent to A1, is 1 or 2; R1A and R1B are each independently hydrogen, halogen, alkyl, or the like; R2A and R2B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B are each independently hydrogen, halogen, alkyl, or the like; R4A and R4B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B may be taken together to form non-aromatic carbocycle or non-aromatic heterocycle; X is CH2, S or O; R1 is each independently halogen, hydroxy, or the like; m is any integer of 0 to 2; and n is any integer of 1 to 2.Type: ApplicationFiled: December 13, 2022Publication date: September 14, 2023Applicant: Shionogi & Co., Ltd.Inventors: Makoto KAWAI, Kenji TOMITA, Toshiyuki AKIYAMA, Azusa OKANO, Masayoshi MIYAGAWA
-
Publication number: 20230236541Abstract: A drive transmission device includes a drive train including a plurality of drive transmitters, and a container. The plurality of drive transmitters of the drive train transmit a driving force of a drive source to a rotator rotatable around a shaft and a swing member rotatable around a shaft different from the shaft of the rotator. The container contains the drive train.Type: ApplicationFiled: January 13, 2023Publication date: July 27, 2023Inventors: Kenji TOMITA, Ryohhei OHYA
-
Patent number: 11697563Abstract: A sheet conveyance device includes a first conveyance member, and a drive transmission mechanism. The first conveyance member is configured to convey a sheet toward a second conveyance member. The drive transmission mechanism is configured to transmit a driving force of a driving source to the first conveyance member. The drive transmission mechanism includes a first drive transmitter and a second drive transmitter disposed coaxially with the first drive transmitter. The driving force is transmitted from the first drive transmitter to the second drive transmitter. The second drive transmitter is rotatable relative to the first drive transmitter within at least a predetermined angular range.Type: GrantFiled: June 2, 2021Date of Patent: July 11, 2023Assignee: RICOH COMPANY, LTD.Inventor: Kenji Tomita
-
Publication number: 20220281890Abstract: The present invention provides a pharmaceutical composition containing the following compound having antiviral action: P is hydrogen or a group to form a prodrug; A1 is CR1AR1B, S or O; A2 is CR2AR2B, S or O; A3 is CR3AR3B, S or O; A4 is each independently CR4AR4B, S or O; the number of hetero atoms among atoms constituting the ring which consists of A1, A2, A3, A4, nitrogen atom adjacent to A1 and carbon atom adjacent to A4, is 1 or 2; R1A and R1B are each independently hydrogen, halogen, alkyl, or the like; R2A and R2B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B are each independently hydrogen, halogen, alkyl, or the like; R4A and R4B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B may be taken together with an adjacent carbon atom to form non-aromatic carbocycle or non-aromatic heterocycle; R1 is fluorine; m is any integer of 1 to 2; and n is any integer of 1 to 2.Type: ApplicationFiled: March 8, 2022Publication date: September 8, 2022Applicant: Shionogi & Co., Ltd.Inventors: Makoto KAWAI, Kenji TOMITA, Toshiyuki AKIYAMA, Azusa OKANO, Masayoshi MIYAGAWA
-
Patent number: 11204570Abstract: A contact-separation mechanism includes a cam to rotate to move a contact-separation member to and from a counterpart member, a detection target to rotate together with the cam, and a detector to detect presence or absence of the detection target in a detection area of the detector, and circuitry. The cam has a reference range. The circuitry issues a rotation stop instruction of the cam after a target time elapses from passing of the reference range of the detection target through the detection area, and sets the target time based on a duration of an immediately preceding passing of the reference range through the detection area.Type: GrantFiled: October 7, 2019Date of Patent: December 21, 2021Assignee: Ricoh Company, Ltd.Inventors: Shigeo Nanno, Kimihiro Tanaka, Tamotsu Ikeda, Kenji Tomita, Osamu Saito
-
Publication number: 20210380359Abstract: A sheet conveyance device includes a first conveyance member, and a drive transmission mechanism. The first conveyance member is configured to convey a sheet toward a second conveyance member. The drive transmission mechanism is configured to transmit a driving force of a driving source to the first conveyance member. The drive transmission mechanism includes a first drive transmitter and a second drive transmitter disposed coaxially with the first drive transmitter. The driving force is transmitted from the first drive transmitter to the second drive transmitter. The second drive transmitter is rotatable relative to the first drive transmitter within at least a predetermined angular range.Type: ApplicationFiled: June 2, 2021Publication date: December 9, 2021Applicant: Ricoh Company, Ltd.Inventor: Kenji TOMITA
-
Patent number: 11022921Abstract: An image forming apparatus includes a driven unit and a drive transmitter. The drive transmitter includes a drive source, a drive gear, and a driven gear. The drive source is configured to drive the driven unit. The drive gear is configured to receive a driving force from the drive source. The driven gear is meshed with the drive gear. The drive transmitter is configured to transmit the driving force from the drive source to the driven unit. The drive gear or the driven gear is a crowned gear crowning-processed and the crowned gear has a crowning amount less than 50 ?m.Type: GrantFiled: April 1, 2020Date of Patent: June 1, 2021Assignee: RICOH COMPANY, LTD.Inventors: Yasuhiro Maehata, Hiroaki Takagi, Kenji Tomita
-
Publication number: 20200361958Abstract: The present invention provides a pharmaceutical composition containing the following compound having antiviral action: wherein each of the symbols is defined in the specification.Type: ApplicationFiled: July 24, 2020Publication date: November 19, 2020Applicant: Shionogi & Co., Ltd.Inventors: Makoto KAWAI, Kenji TOMITA, Toshiyuki AKIYAMA, Azusa OKANO, Masayoshi MIYAGAWA
-
Publication number: 20200339565Abstract: The present invention provides a compound having antiviral effects, particularly having growth inhibitory activity on influenza viruses, a preferred example of the compound being a substituted 3-hydroxy-4-pyridone derivative prodrug having cap-dependent endonuclease inhibitory activity.Type: ApplicationFiled: November 15, 2019Publication date: October 29, 2020Applicant: Shionogi & Co., Ltd.Inventors: Chika TAKAHASHI, Hidenori MIKAMIYAMA, Toshiyuki AKIYAMA, Kenji TOMITA, Yoshiyuki TAODA, Makoto KAWAI, Kosuke ANAN, Masayoshi MIYAGAWA, Naoyuki SUZUKI
-
Publication number: 20200326648Abstract: An image forming apparatus includes a driven unit and a drive transmitter. The drive transmitter includes a drive source, a drive gear, and a driven gear. The drive source is configured to drive the driven unit. The drive gear is configured to receive a driving force from the drive source. The driven gear is meshed with the drive gear. The drive transmitter is configured to transmit the driving force from the drive source to the driven unit. The drive gear or the driven gear is a crowned gear crowning-processed and the crowned gear has a crowning amount less than 50 ?m.Type: ApplicationFiled: April 1, 2020Publication date: October 15, 2020Applicant: Ricoh Company, Ltd.Inventors: Yasuhiro MAEHATA, Hiroaki TAKAGI, Kenji TOMITA
-
Publication number: 20200283455Abstract: The present invention provides the following compounds having anti-viral activity. A1 is CR1AR1B, S or O; A2 is CR2AR2B, S or O; A3 is CR3AR3B, S or O; A4 is CR4AR4B, S or O; the number of hetero atoms among atoms constituting the ring which consists of A1, A2, A3, A4, nitrogen atom adjacent to A1 and carbon atom adjacent to A1, is 1 or 2; R1A and R1B are each independently hydrogen, halogen, alkyl, or the like; R2A and R2B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B are each independently hydrogen, halogen, alkyl, or the like; R4A and R4B are each independently hydrogen, halogen, alkyl, or the like; R3A and R3B may be taken together to form non-aromatic carbocycle or non-aromatic heterocycle; X is CH2, S or O; R1 is each independently halogen, hydroxy, or the like; m is any integer of 0 to 2; and n is any integer of 1 to 2.Type: ApplicationFiled: March 23, 2020Publication date: September 10, 2020Applicant: Shionogi & Co., Ltd.Inventors: Makoto KAWAI, Kenji TOMITA, Toshiyuki AKIYAMA, Azusa OKANO, Masayoshi MIYAGAWA
-
Patent number: 10686374Abstract: A control apparatus performs peak current mode control in which a drive switch is turned off when output of a comparator is inverted during an on-operation period determined by a basic signal. The comparator inverts the output when a reactor current increases to a command current. The control apparatus determines that a switching frequency of the drive switch is required to be switched when the output of the comparator is detected to have not become inverted during the single switching period while the peak current mode control is being performed. The control apparatus sets the switching frequency to a first frequency when the switching determining unit determines that the switching frequency is not required to be switched, and switches the switching frequency from the first frequency to a second frequency lower than the first frequency when the switching determining unit determines that the switching frequency is required to be switched.Type: GrantFiled: November 15, 2018Date of Patent: June 16, 2020Assignees: SOKEN, INC., DENSO CORPORATIONInventors: Kenji Tomita, Seiji Iyasu, Yuichi Handa
-
Publication number: 20200172359Abstract: A contact-separation mechanism includes a cam to rotate to move a contact-separation member to and from a counterpart member, a detection target to rotate together with the cam, and a detector to detect presence or absence of the detection target in a detection area of the detector, and circuitry. The cam has a reference range. The circuitry issues a rotation stop instruction of the cam after a target time elapses from passing of the reference range of the detection target through the detection area, and sets the target time based on a duration of an immediately preceding passing of the reference range through the detection area.Type: ApplicationFiled: October 7, 2019Publication date: June 4, 2020Applicant: Ricoh Company, Ltd.Inventors: SHIGEO NANNO, Kimihiro Tanaka, Tamotsu Ikeda, Kenji Tomita, Osamu Saito
-
Patent number: 10591853Abstract: A moving device, which is included in an image forming apparatus, includes a cam, a moving body, a biasing body, a drive source and a drive transmission device. The moving body is configured to be moved by the cam. The biasing body is configured to apply a biasing force to bias the moving body toward the cam. The drive source is configured to apply a driving force to the cam. The drive transmission device is configured to transmit the driving force to the cam and includes a load applying body configured to apply a load to a rotation of the cam.Type: GrantFiled: January 24, 2018Date of Patent: March 17, 2020Assignee: Ricoh Company, Ltd.Inventors: Kenji Tomita, Kimihiro Tanaka, Yohei Miura, Hiroaki Nieda
-
Patent number: 10520183Abstract: A tubular belt includes an inner layer and an outer layer that are coupled together at an upper edge and a lower edge. A flat tubular storage pocket space is formed between the inner and the outer layers. The pocket can be accessed through one or more pocket openings formed in the outer layer. A light coupling can be attached to the elastic belt to securely hold a light to the elastic belt. The light coupling mechanism extends outward from a pocket of the belt and a light is attached to the light coupling mechanism.Type: GrantFiled: November 6, 2018Date of Patent: December 31, 2019Assignee: Light-Belt LLCInventor: Paul Kenji Tomita
-
Patent number: 10503102Abstract: A drive transmitting device, which is included in an image forming apparatus, includes a drive source, a drive transmitting body, and a rotary shaft. The drive transmitting body has a press-in target portion. The rotary shaft includes a press-in portion mounted on one end of the rotary shaft in an axial direction of the rotary shaft to be pressed into the press-in target portion of the drive transmitting body. The press-in portion includes a flat face and a plurality of circular arc faces having different distances from an axial center of the rotary shaft and being disposed at a same position as at least a portion of the flat face in the axial direction of the rotary shaft. A radius of curvature of one of the plurality of circular arc faces is greater than a radius of curvature of another of the plurality of circular arc faces.Type: GrantFiled: January 8, 2019Date of Patent: December 10, 2019Assignee: Ricoh Company, Ltd.Inventor: Kenji Tomita
-
Patent number: 10461650Abstract: In a control device applied to an insulated DC-DC converter including a transformer and drive switches connected to a input winding of the transformer, the control device operates the drive switches to control an output voltage output via the output winding to a target voltage. Furthermore, the control device includes a voltage acquiring unit acquiring the output voltage and a frequency setting unit setting a switching frequency for the drive switches based on the output voltage acquired by the voltage acquiring unit. The frequency setting unit sets, for the switching frequency, a value increasing with a value of the acquired output voltage, and sets the switching frequency such that an increase in the value of the output voltage increases a frequency increase rate corresponding to an amount of increase in the switching frequency per unit amount of increase in the output voltage.Type: GrantFiled: March 5, 2019Date of Patent: October 29, 2019Assignee: DENSO CORPORATIONInventors: Kenji Tomita, Seiji Iyasu, Yuichi Handa
-
Patent number: 10429786Abstract: A drive transmission device, which is included in an image forming apparatus, includes a drive transmission body to which a drive force is applied from a driving source, and a rotary shaft having a press-in portion mounted on one end thereof in the axial direction. The press-in portion has multiple planes disposed parallel to an axial direction and configured to receive the drive transmission body. The multiple planes include upstream and downstream side planes disposed downstream from the upstream side plane in a press-in direction of the drive transmission body. The upstream and downstream side planes are aligned along the press-in direction of the drive transmission body and have respective distances different from each other from an axial center of the rotary shaft. A distance from the downstream side plane to the axial center is greater than a distance from the upstream side plane to the axial center.Type: GrantFiled: July 12, 2018Date of Patent: October 1, 2019Assignee: RICOH COMPANY, LTD.Inventors: Kenji Tomita, Junpei Kamichi, Hiroaki Nieda, Kimihiro Tanaka, Hideto Higaki, Yuuki Shiga, Jumpei Aoyama, Hirofumi Horita