Patents by Inventor Hisakazu Iwai

Hisakazu Iwai 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: 20190348435
    Abstract: Memory openings and backside openings are formed through an alternating stack of insulating layers and sacrificial material layers with patterned stepped surfaces and an overlying retro-stepped dielectric material portion. The backside openings may be formed in rows with shape modifications in staircase regions to provide more lateral elongation in areas with lesser layers of the alternating stack. Non-circular horizontal cross-sectional shapes for the backside openings in the staircase regions allow formation of the backside opening with less shape distortion. Memory opening fill structures are formed in the memory openings, and the sacrificial material layers are replaced with electrically conductive layers using the backside openings as conduits for an etchant and for a deposition precursor material. The electrically conductive layers are isotropically recessed around each backside opening to form width-modulated cavities, which is filled with width-modulated insulating wall structures.
    Type: Application
    Filed: March 25, 2019
    Publication date: November 14, 2019
    Inventors: Koichiro Nagata, Junpei Kanazawa, Yoshitaka Otsu, Takaaki Iwai, Shuji Minagawa, Hisakazu Otoi
  • Patent number: 10347654
    Abstract: Memory openings and backside openings are formed through an alternating stack of insulating layers and sacrificial material layers over a substrate. Memory opening fill structures are formed in the memory openings, and sacrificial backside opening fill structures are formed in the backside openings. Cavities are formed in volumes of the backside openings by removing the sacrificial backside opening fill structures. Remaining portions of the sacrificial material layers are replaced with material portions including electrically conductive layers. Each electrically conductive layer is formed as a continuous material layer including holes around the backside openings. Each electrically conductive layer is singulated into a plurality of electrically conductive strips by isotropically recessing the electrically conductive layers around each backside opening. Width-modulated cavities including expanded volumes of the backside openings are formed, and are filled with width-modulated insulating wall structures.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: July 9, 2019
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Takaaki Iwai, Shuji Minagawa, Hisakazu Otoi
  • Publication number: 20120101137
    Abstract: The object of the present invention is to provide a compound having a glucokinase-activating effect. A pharmaceutical composition comprising a compound represented by the general formula (I) or a pharmaceutically acceptable salt thereof as an active ingredient: wherein X means a nitrogen atom or CR6, wherein R6 means a hydrogen atom or a halogen atom; R1 means a hydrogen atom, a C1-C6 alkyl group, a C1-C6 alkoxy group or a C1-C6 alkylthio group; R2 means a hydrogen atom or a fluorine atom; R3 means a hydrogen atom or a C1-C6 alkyl group; and one of R4 and R5 means a hydrogen atom or a C1-C6 alkyl group, and the other means a C1-C6 alkylenecarboxylic acid, a C1-C6 alkylsulfonyl group, a C1-C6 alkylcarbonyl group, or CONH2.
    Type: Application
    Filed: June 26, 2010
    Publication date: April 26, 2012
    Applicant: SANWA KAGAKU KENKYUSHO CO., LTD.
    Inventors: Tokuyuki Yamashita, Kaori Chikamatsu, Naoki Takahashi, Hisakazu Iwai, Masakazu Kogami, Masao Sakairi, Nobuhide Watanabe, Hiroki Fujieda, Daisuke Kataoka, Mitsuhiro Makino, Noriyasu Kato, Toshiyuki Miyazawa, Kazushige Nagai, Nobuyoshi Kasugai, Hiroyo Kataoka, Naoki Hiramatsu, Nobuaki Tsuruta, Yurie Yamada, Mika Miyoshi, Sei Murakami, Izumi Goto, Tohru Izuchi, Kimie Suzuki, Satoko Harada, Martin Lang, Markus Hans-Juergen Seifert, Kristina Kaarina Wolf