Patents by Inventor Atsushi Kitagawa

Atsushi Kitagawa 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: 20220041656
    Abstract: Disclosed are a novel compound having a higher angiogenic effect than that of a known peptide-based angiogenic agent, and an angiogenic agent including the novel compound. The compound is represented by the following formula [1]: Cyclic(Cys-O2Oc-SVV(F/Y)GLRG-Cys)-NH2 (wherein the number of oxyethylene units, represented by O2Oc, is within the range of 2 to 6), the following formula [II]: Cyclic(O2Oc-SVV(F/Y)GLRQ)-NH2 [II] (wherein the number of oxyethylene units, represented by O2Oc, is within the range of 2 to 6), or the following formula [III]: O2Oc-SVV(F/Y)GLR-NH2 [III] (wherein the number of oxyethylene units, represented by O2Oc, is within the range of 2 to 6).
    Type: Application
    Filed: October 31, 2019
    Publication date: February 10, 2022
    Applicant: HiPep Laboratories
    Inventors: Kiyoshi NOKIHARA, Yuki TOMINAGA, Atsushi KITAGAWA, Shun NOKIHARA
  • Patent number: 10483966
    Abstract: A switching circuit includes: a drive power supply; a first transistor and a second transistor; a drive signal source; and a drive circuit. Each of the first transistor and the second transistor includes: a drain electrode and a source electrode in which a main current flows when a corresponding one of the first transistor and the second transistor is ON; a first source terminal for passing the main current; and a second source terminal. Here, the first source terminal is connected to the source electrode at an impedance lower than an impedance of the second source terminal.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: November 19, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takahiro Uehara, Takuya Ishii, Hiroyuki Handa, Atsushi Kitagawa, Takeshi Tanaka
  • Publication number: 20190149148
    Abstract: A switching circuit includes: a drive power supply; a first transistor and a second transistor; a drive signal source; and a drive circuit. Each of the first transistor and the second transistor includes: a drain electrode and a source electrode in which a main current flows when a corresponding one of the first transistor and the second transistor is ON; a first source terminal for passing the main current; and a second source terminal. Here, the first source terminal is connected to the source electrode at an impedance lower than an impedance of the second source terminal.
    Type: Application
    Filed: December 19, 2018
    Publication date: May 16, 2019
    Inventors: Takahiro UEHARA, Takuya ISHII, Hiroyuki HANDA, Atsushi KITAGAWA, Takeshi TANAKA
  • Patent number: 10205449
    Abstract: A switching circuit includes: a drive power supply; a first transistor and a second transistor; a drive signal source; and a drive circuit. Each of the first transistor and the second transistor includes: a drain electrode and a source electrode in which a main current flows when a corresponding one of the first transistor and the second transistor is ON; a first source terminal for passing the main current; and a second source terminal. Here, the first source terminal is connected to the source electrode at an impedance lower than an impedance of the second source terminal.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: February 12, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takahiro Uehara, Takuya Ishii, Hiroyuki Handa, Atsushi Kitagawa, Takeshi Tanaka
  • Publication number: 20180212509
    Abstract: A switching circuit includes: a drive power supply; a first transistor and a second transistor; a drive signal source; and a drive circuit. Each of the first transistor and the second transistor includes: a drain electrode and a source electrode in which a main current flows when a corresponding one of the first transistor and the second transistor is ON; a first source terminal for passing the main current; and a second source terminal. Here, the first source terminal is connected to the source electrode at an impedance lower than an impedance of the second source terminal.
    Type: Application
    Filed: March 19, 2018
    Publication date: July 26, 2018
    Inventors: Takahiro UEHARA, Takuya ISHII, Hiroyuki HANDA, Atsushi KITAGAWA, Takeshi TANAKA
  • Patent number: 10033275
    Abstract: A DC-DC converter module includes a module substrate on which switching transistors and a controller IC chip are mounted, stud terminals mounted on a surface of the module substrate, and an inductor attached to the stud terminals such that the inductor faces the module substrate. In a plan view, the switching transistors are arranged within an area where the inductor overlaps the module substrate, whereas at least a portion of the controller IC chip is arranged outside the area.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: July 24, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takuya Ishii, Atsushi Kitagawa, Tadata Hatanaka
  • Patent number: 9812964
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: November 7, 2017
    Assignee: ROHM CO., LTD.
    Inventor: Atsushi Kitagawa
  • Publication number: 20160294288
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Application
    Filed: June 14, 2016
    Publication date: October 6, 2016
    Applicant: ROHM CO., LTD.
    Inventor: Atsushi KITAGAWA
  • Patent number: 9391038
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: July 12, 2016
    Assignee: ROHM CO., LTD.
    Inventor: Atsushi Kitagawa
  • Publication number: 20160164417
    Abstract: A DC-DC converter module includes a module substrate on which switching transistors and a controller IC chip are mounted, stud terminals mounted on a surface of the module substrate, and an inductor attached to the stud terminals such that the inductor faces the module substrate. In a plan view, the switching transistors are arranged within an area where the inductor overlaps the module substrate, whereas at least a portion of the controller IC chip is arranged outside the area.
    Type: Application
    Filed: February 2, 2016
    Publication date: June 9, 2016
    Inventors: Takuya ISHII, Atsushi KITAGAWA, Tadata HATANAKA
  • Publication number: 20150021768
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Application
    Filed: September 23, 2014
    Publication date: January 22, 2015
    Inventor: Atsushi KITAGAWA
  • Patent number: 8872577
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: October 28, 2014
    Assignee: Rohm Co., Ltd.
    Inventor: Atsushi Kitagawa
  • Publication number: 20140175648
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact, with the IC socket of the semiconductor device. Each pair of nearest neighbors, of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Application
    Filed: February 26, 2014
    Publication date: June 26, 2014
    Applicant: ROHM CO., LTD.
    Inventor: Atsushi KITAGAWA
  • Patent number: 8704357
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: April 22, 2014
    Assignee: Rohm Co., Ltd.
    Inventor: Atsushi Kitagawa
  • Patent number: 8659514
    Abstract: LED drivers specially directed to LED matrix driver's ghost image prevention is disclosed. The LED driver receives an external input and decodes the input to produce a time multiplex timing on turning on an LED array. The LED driver inserts a dead time to the outputs and during this time the ghost image prevention circuit discharges the output stray capacitances to a predetermined level.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: February 25, 2014
    Assignees: Panasonic Corporation, Panasonic Semiconductor Asia Pte. Ltd.
    Inventors: Etsuji Sato, Atsushi Kitagawa, Yoshihito Kawakami, Chun Kiong Leslie Khoo, Ulysses Ramos Lopez, Narciso Repollo Semira, Jiong Fu
  • Patent number: 8305011
    Abstract: Multiple LED terminals are provided to multiple LEDs, respectively. Each of these LED terminals is connected to the anode of the corresponding LED. A booster circuit boosts an input voltage. Multiple constant current sources are provided to the multiple LEDs, respectively. One terminal of each of the constant current sources is connected to the corresponding one of the LEDs via the corresponding one of the LED terminals. Multiple switches are provided to the multiple constant current sources, respectively, each of which selectively outputs a voltage selected from the input voltage and the output voltage of the booster circuit to the corresponding constant current source. A control circuit monitors each of the voltages at the multiple LED terminals, and controls the connection state of each of the switches based upon the corresponding voltage.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: November 6, 2012
    Assignee: Rohm Co., Ltd.
    Inventors: Atsushi Kitagawa, Kunihiro Komiya
  • Publication number: 20120176062
    Abstract: LED drivers specially directed to LED matrix driver's ghost image prevention is disclosed. The LED driver receives an external input and decodes the input to produce a time multiplex timing on turning on an LED array. The LED driver inserts a dead time to the outputs and during this time the ghost image prevention circuit discharges the output stray capacitances to a predetermined level.
    Type: Application
    Filed: January 11, 2011
    Publication date: July 12, 2012
    Applicants: PANASONIC SEMICONDUCTOR ASIA PTE., LTD., PANASONIC CORPORATION
    Inventors: Etsuji SATO, Atsushi KITAGAWA, Yoshihito KAWAKAMI, Chun Kiong Leslie KHOO, Ulysses Ramos LOPEZ, Narciso Repollo SEMIRA, Jiong FU
  • Publication number: 20120032713
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Application
    Filed: October 5, 2011
    Publication date: February 9, 2012
    Applicant: ROHM CO., LTD.
    Inventor: Atsushi KITAGAWA
  • Patent number: 8063494
    Abstract: A semiconductor device has pluralities of grid array terminals forming a grid array structure, e.g. a BGA structure, in which the output end of a built-in switch circuit is connected to multiple terminals of the grid array structure, thereby reducing the current that flows through each of the multiple terminals below a permissible level and minimizing the heat due to contact resistances of the multiple terminals in contact with the IC socket of the semiconductor device. Each pair of nearest neighbors of the multiple terminals is interposed by at least one further array terminal. The multiple terminals are all located at the outermost peripheral terminal positions of the grid array structure. Thus, the heat generated in the respective multiple terminals connected to the switch circuit is reduced, thereby minimizing the possibility of hazardous melting of the terminals.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: November 22, 2011
    Assignee: Rohm Co., Ltd.
    Inventor: Atsushi Kitagawa
  • Patent number: 7893667
    Abstract: A direct-current stabilized power supply apparatus according to the present invention includes offsetting means that keeps a slope voltage (Vslp) shifted from the ground potential to a higher potential by a predetermined offset voltage ?V so that the lower limit level of the slope voltage (Vslp) is higher than that of an error voltage (Verr). With this configuration, it is possible to provide a direct-current stabilized power supply apparatus that can appropriately control a duty ratio without causing oscillation or the like in the overall system, and also to provide an electrical device incorporating such a power supply apparatus.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: February 22, 2011
    Assignee: Rohm Co., Ltd.
    Inventors: Atsushi Kitagawa, Hiroaki Asazu