Patents by Inventor Yoshitaka Yamauchi

Yoshitaka Yamauchi 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).

  • Patent number: 11953927
    Abstract: The present disclosure provides a bias generating device and a method for generating bias. A bias generating device includes a first diode-connected transistor pair connected to receive a first voltage; a second diode-connected transistor pair connected to receive a second voltage; and a first transistor pair connected to the first diode-connected transistor pair and the second diode-connected transistor pair. The first transistor pair is configured to generate a third voltage in response to the first voltage and the second voltage.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: April 9, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Perng-Fei Yuh, Yoshitaka Yamauchi, Yih Wang
  • Patent number: 11903188
    Abstract: The present disclosure provides a memory device, a semiconductor device, and a method of operating a memory device. A memory device includes a memory cell, a bit line, a word line, a select transistor, a fuse element, and a heater. The bit line is connected to the memory cell. The word line is connected to the memory cell. The select transistor is disposed in the memory cell. A gate of the select transistor is connected to the word line. The fuse element is disposed in the memory cell. The fuse element is connected to the bit line and the select transistor. The heater is configured to heat the fuse element.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: February 13, 2024
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Perng-Fei Yuh, Yih Wang, Meng-Sheng Chang, Jui-Che Tsai, Ku-Feng Lin, Yu-Wei Lin, Keh-Jeng Chang, Chansyun David Yang, Shao-Ting Wu, Shao-Yu Chou, Philex Ming-Yan Fan, Yoshitaka Yamauchi, Tzu-Hsien Yang
  • Publication number: 20240012344
    Abstract: A toner contains an amorphous polyester resin with an SP value of from 11.0 to 11.5 (cal/cm3)1/2, a styrene resin with an SP value of from 9.5 to 10.5 (cal/cm3)1/2, and a hydrocarbon wax, wherein the molecular weight distribution of the toner soluble in tetrahydrofuran has the main peak between 3,500 to 5,500 as measured by gel permeation chromatography.
    Type: Application
    Filed: July 5, 2023
    Publication date: January 11, 2024
    Applicant: Ricoh Company, Ltd.
    Inventors: Kohtaroh OGINO, Yoshitaka YAMAUCHI, Ayaka MORI
  • Publication number: 20230377629
    Abstract: A memory device is disclosed. The memory device includes a plurality of memory cells arranged in a plurality of rows and a plurality of columns; a plurality of word lines, each of the word lines coupled to a corresponding row of the memory cells; a plurality of bit lines, each of the bit lines coupled to a corresponding column of the memory cells; and a plurality of second word lines, each of the second word lines coupled to a corresponding column of the memory cells.
    Type: Application
    Filed: July 28, 2023
    Publication date: November 23, 2023
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yoshitaka Yamauchi, Meng-Sheng Chang, Hiroki Noguchi, Perng-Fei Yuh
  • Patent number: 11763875
    Abstract: A memory device is disclosed. The memory device includes a plurality of memory cells arranged in a plurality of rows and a plurality of columns; a plurality of word lines, each of the word lines coupled to a corresponding row of the memory cells; a plurality of bit lines, each of the bit lines coupled to a corresponding column of the memory cells; and a plurality of second word lines, each of the second word lines coupled to a corresponding column of the memory cells.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: September 19, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Yoshitaka Yamauchi, Meng-Sheng Chang, Hiroki Noguchi, Perng-Fei Yuh
  • Publication number: 20230282297
    Abstract: Systems, devices, and methods are described herein for a programmable memory array. A programmable memory system includes an array of programmable memory bit cells. A memory bit cell of the array includes a first transistor of a first type controlled by a bit line, a second transistor of a second type responsive to a first word line and a second word line via a logic gate, and a third transistor of the second type responsive to the word line. The first word line is positioned substantially perpendicular to the bit line, and the second word line is positioned substantially parallel to the bit line. The first word line is activated via an X portion of an address. While the second word line is activated via a Y portion of the address.
    Type: Application
    Filed: May 16, 2023
    Publication date: September 7, 2023
    Inventors: Meng-Sheng Chang, Yoshitaka Yamauchi, Perng-Fei Yuh
  • Publication number: 20230262969
    Abstract: The present disclosure provides a memory device, a semiconductor device, and a method of operating a memory device. A memory device includes a memory cell, a bit line, a word line, a select transistor, a fuse element, and a heater. The bit line is connected to the memory cell. The word line is connected to the memory cell. The select transistor is disposed in the memory cell. A gate of the select transistor is connected to the word line. The fuse element is disposed in the memory cell. The fuse element is connected to the bit line and the select transistor. The heater is configured to heat the fuse element.
    Type: Application
    Filed: February 16, 2022
    Publication date: August 17, 2023
    Inventors: PERNG-FEI YUH, YIH WANG, MENG-SHENG CHANG, JUI-CHE TSAI, KU-FENG LIN, YU-WEI LIN, KEH-JENG CHANG, CHANSYUN DAVID YANG, SHAO-TING WU, SHAO-YU CHOU, PHILEX MING-YAN FAN, YOSHITAKA YAMAUCHI, TZU-HSIEN YANG
  • Publication number: 20230251588
    Abstract: A toner includes: a crystalline polyester resin; and a partially hydrogenated petroleum resin. A hydrogenation rate of the partially hydrogenated petroleum resin is from 30% through 70%. An amount of the partially hydrogenated petroleum resin relative to the toner is from 1% by mass through 15% by mass.
    Type: Application
    Filed: January 25, 2023
    Publication date: August 10, 2023
    Inventors: Ayaka MORI, Yoshitaka YAMAUCHI, Kohtaroh OGINO, Masayuki ISHII
  • Publication number: 20230205107
    Abstract: A toner includes a release agent. The release agent includes a hydrocarbon compound having 2 or more and 16 or less carbon atoms. A content of the hydrocarbon compound having 2 or more and 16 or less carbon atoms, in the release agent, is 1000 ppm or more in terms of toluene, as determined by gas chromatography mass spectrometry. The hydrocarbon compound having 2 or more and 16 or less carbon atoms includes a hydrocarbon compound having a retention time of 7 minutes or more and less than 8 minutes determined by the gas chromatography mass spectrometry.
    Type: Application
    Filed: December 22, 2022
    Publication date: June 29, 2023
    Inventors: Kohtaroh OGINO, Yoshitaka YAMAUCHI, Masayuki ISHII, Ayaka MORI, Kazumi SUZUKI
  • Publication number: 20230205105
    Abstract: A toner including a non-crystalline polyester resin, a crystalline polyester resin, a hydrocarbon wax, and an aromatic petroleum resin is provided. A mass ratio of the aromatic petroleum resin to the hydrocarbon wax is 1.0 or more. The non-crystalline polyester resin contains diol components, and the diol components include an alkylene oxide adduct of bisphenol A and ethylene glycol.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 29, 2023
    Inventors: Yoshitaka YAMAUCHI, Kohtaroh OGINO, Masayuki ISHII, Ayaka MORI
  • Patent number: 11664081
    Abstract: Systems, devices, and methods are described herein for a programmable memory array. A programmable memory system includes an array of programmable memory bit cells. A memory bit cell of the array includes a first transistor of a first type controlled by a bit line, a second transistor of a second type responsive to a first word line and a second word line via a logic gate, and a third transistor of the second type responsive to the word line. The first word line is positioned substantially perpendicular to the bit line, and the second word line is positioned substantially parallel to the bit line. The first word line is activated via an X portion of an address. While the second word line is activated via a Y portion of the address.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: May 30, 2023
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Meng-Sheng Chang, Yoshitaka Yamauchi, Perng-Fei Yuh
  • Publication number: 20220383934
    Abstract: In some aspects of the present disclosure, a memory device is disclosed. In some aspects, the memory device includes a plurality of memory cells arranged in a plurality of rows and a plurality of columns; a plurality of word lines, each of the word lines coupled to a corresponding row of the memory cells; a plurality of bit lines, each of the bit lines coupled to a corresponding column of the memory cells; and a plurality of second word lines, each of the second word lines coupled to a corresponding column of the memory cells.
    Type: Application
    Filed: May 26, 2021
    Publication date: December 1, 2022
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Yoshitaka Yamauchi, Meng-Sheng Chang, Hiroki Noguchi, Perng-Fei Yuh
  • Publication number: 20220342436
    Abstract: The present disclosure provides a bias generating device and a method for generating bias. A bias generating device includes a first diode-connected transistor pair connected to receive a first voltage; a second diode-connected transistor pair connected to receive a second voltage; and a first transistor pair connected to the first diode-connected transistor pair and the second diode-connected transistor pair. The first transistor pair is configured to generate a third voltage in response to the first voltage and the second voltage.
    Type: Application
    Filed: April 22, 2021
    Publication date: October 27, 2022
    Inventors: PERNG-FEI YUH, YOSHITAKA YAMAUCHI, YIH WANG
  • Publication number: 20220336031
    Abstract: Systems, devices, and methods are described herein for a programmable memory array. A programmable memory system includes an array of programmable memory bit cells. A memory bit cell of the array includes a first transistor of a first type controlled by a bit line, a second transistor of a second type responsive to a word line and a second word line via a logic gate, and a third transistor of the second type responsive to the word line. The first word line is positioned substantially perpendicular to the bit line, and the second word line is positioned substantially parallel to the bit line. The word line is activated via an X portion of an address. While the second word line is activated via a Y portion of the address.
    Type: Application
    Filed: December 21, 2021
    Publication date: October 20, 2022
    Inventors: Meng-Sheng Chang, Yoshitaka Yamauchi, Perng-Fei Yuh
  • Publication number: 20220128917
    Abstract: A toner including inorganic particles, wherein the inorganic particles include a fluorine-containing alumina, and the toner satisfies both Formula (1) below and Formula (2) below: 2.7?X1/X2?5.5 . . . Formula (1); and 2.1?X1?3.0 . . . Formula (2) where X1 denotes a concentration of aluminum in the toner and X2 denotes a concentration of fluorine in the toner, and the concentration of aluminum and the concentration of fluorine are determined through an X-ray photoelectron spectroscopic analysis method.
    Type: Application
    Filed: November 6, 2019
    Publication date: April 28, 2022
    Applicant: Ricoh Company, Ltd.
    Inventors: Hyo Shu, Hisashi Nakajima, Yoshitaka Yamauchi, Katsunori Kurose
  • Patent number: 11287757
    Abstract: A toner including a strontium titanate powdery material as an external additive, the strontium titanate powdery material including Si-containing particles on a surface of the strontium titanate powdery material, the Si-containing particles having a number average circle equivalent diameter of 5 nm or more but 15 nm or less.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: March 29, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Hisashi Nakajima, Akihiro Kaneko, Yoshitaka Yamauchi, Katsunori Kurose, Hyo Shu
  • Patent number: 11256188
    Abstract: Provided is a toner including toner particles, each toner particle includes: a base particle including a binder resin; and external additive particles, wherein the external additive particles include particles each having an equivalent circle diameter of 10 nm or greater, a volume average particle diameter of the particles each having an equivalent circle diameter of 10 nm or greater is 80 nm or greater but 140 nm or less, and a ratio (circumscribed circle area/particle area) of a circumscribed circle area of the particle having an equivalent circle diameter of 10 nm or greater to a particle area of the particle having an equivalent circle diameter of 10 nm or greater is 1.60 or greater but 2.60 or less.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: February 22, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Akihiro Kaneko, Kazumi Suzuki, Hisashi Nakajima, Yoshitaka Yamauchi, Kohtaroh Ogino, Teruyuki Suzuki, Namie Suzuki
  • Patent number: 11215936
    Abstract: A toner is provided. The toner comprises a binder resin, a release agent, and a function imparting agent comprising a fatty acid amide having a melting point of from 110 to 160 degrees C. When the toner is heated by a differential scanning calorimeter, the toner exhibits no endothermic peak within a temperature range of ±20 degrees C. of a temperature at a highest endothermic peak derived from the fatty acid amide.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: January 4, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventors: Namie Suzuki, Yoshitaka Yamauchi
  • Publication number: 20210072656
    Abstract: Provided is a toner including toner particles, each toner particle includes: a base particle including a binder resin; and external additive particles, wherein the external additive particles include particles each having an equivalent circle diameter of 10 nm or greater, a volume average particle diameter of the particles each having an equivalent circle diameter of 10 nm or greater is 80 nm or greater but 140 nm or less, and a ratio (circumscribed circle area/particle area) of a circumscribed circle area of the particle having an equivalent circle diameter of 10 nm or greater to a particle area of the particle having an equivalent circle diameter of 10 nm or greater is 1.60 or greater but 2.60 or less.
    Type: Application
    Filed: December 26, 2018
    Publication date: March 11, 2021
    Inventors: Akihiro KANEKO, Kazumi SUZUKI, Hisashi NAKAJIMA, Yoshitaka YAMAUCHI, Kohtaroh OGINO, Teruyuki SUZUKI, Namie SUZUKI
  • Publication number: 20200363743
    Abstract: A toner including a strontium titanate powdery material as an external additive, the strontium titanate powdery material including Si-containing particles on a surface of the strontium titanate powdery material, the Si-containing particles having a number average circle equivalent diameter of 5 nm or more but 15 nm or less.
    Type: Application
    Filed: April 22, 2020
    Publication date: November 19, 2020
    Inventors: Hisashi NAKAJIMA, Akihiro Kaneko, Yoshitaka Yamauchi, Katsunori Kurose, Hyo Shu