Patents by Inventor Takashi Kozeki

Takashi Kozeki 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: 20230080753
    Abstract: The purpose of the present disclosure is to provide a pellicle that has an adhesive layer having good flatness, and a method for producing the pellicle with good reproducibility. Said purpose is achieved by a pellicle having: a pellicle frame; a pellicle film provided so as to be stretched on one end surface of the pellicle frame; and an adhesive layer provided on the other end surface of the pellicle frame. The adhesive layer contains a cured product of a resin composition containing a curable polymer (A), and a curing agent (B1) and a curing agent (B2). The curing agent (B1) and the curing agent (B2) have different curing conditions.
    Type: Application
    Filed: March 24, 2021
    Publication date: March 16, 2023
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yasushi SATOH, Kazuo KOHMURA, Akira ISHIKAWA, Takashi UNEZAKI, Hisako ISHIKAWA, Takashi KOZEKI, Ken ITO
  • Patent number: 10606169
    Abstract: The purpose of the present invention is to provide: a pellicle frame which is not susceptible to deterioration even if irradiated with short-wavelength light such as excimer light, and which is not susceptible to generation of an outgas or foreign substance; and a pellicle which uses this pellicle frame. In order to achieve the above-described purpose, this pellicle frame for supporting the outer periphery of a pellicle film is configured to comprise a frame and a film that is formed on the surface of the frame and contains a polyimide resin.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: March 31, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kazuo Kohmura, Takashi Kozeki, Daiki Taneichi, Shintaro Maekawa, Yosuke Ono, Tsuneaki Biyajima
  • Patent number: 10585348
    Abstract: Provided are a pellicle for extreme ultraviolet light lithography, a method for producing the same, and an exposure method. A pellicle according to the present invention includes a first frame having a pellicle film located thereon; a second frame supporting the first frame; a through-hole running through the first frame; and a filter covering the through-hole on the side of a surface of the first frame on which the pellicle film is located. The through-hole may run through the pellicle film; and the filter may be located on the pellicle film. The filter may be located, adjacent to the pellicle film, on the first frame.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: March 10, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kazuo Kohmura, Daiki Taneichi, Takashi Kozeki, Yosuke Ono, Hisako Ishikawa, Tsuneaki Biyajima, Atsushi Okubo, Yasuyuki Sato, Toshiaki Hirota
  • Publication number: 20180239242
    Abstract: The purpose of the present invention is to provide: a pellicle frame which is not susceptible to deterioration even if irradiated with short-wavelength light such as excimer light, and which is not susceptible to generation of an outgas or foreign substance; and a pellicle which uses this pellicle frame. In order to achieve the above-described purpose, this pellicle frame for supporting the outer periphery of a pellicle film is configured to comprise a frame and a film that is formed on the surface of the frame and contains a polyimide resin.
    Type: Application
    Filed: August 15, 2016
    Publication date: August 23, 2018
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kazuo KOHMURA, Takashi KOZEKI, Daiki TANEICHI, Shintaro MAEKAWA, Yosuke ONO, Tsuneaki BIYAJIMA
  • Publication number: 20170184957
    Abstract: Provided are a pellicle for extreme ultraviolet light lithography, a method for producing the same, and an exposure method. A pellicle according to the present invention includes a first frame having a pellicle film located thereon; a second frame supporting the first frame; a through-hole running through the first frame; and a filter covering the through-hole on the side of a surface of the first frame on which the pellicle film is located. The through-hole may run through the pellicle film; and the filter may be located on the pellicle film. The filter may be located, adjacent to the pellicle film, on the first frame.
    Type: Application
    Filed: March 9, 2017
    Publication date: June 29, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kazuo KOHMURA, Daiki TANEICHI, Takashi KOZEKI, Yosuke ONO, Hisako ISHIKAWA, Tsuneaki BIYAJIMA, Atsushi OKUBO, Yasuyuki SATO, Toshiaki HIROTA
  • Patent number: 8945799
    Abstract: A pellicle which has a mask adhesive layer that can be plastic-deformed readily particularly at a temperature at which exposure to light is carried out, rarely provides a residue of an adhesive agent upon the removal of the mask adhesive layer from a mask and has good handling properties, and which can prevent the position gap of a pattern. The pellicle comprises a pellicle frame, a pellicle membrane and a mask adhesive layer containing a mask adhesive agent. The mask adhesive agent comprises 100 parts by mass of a thermoplastic elastomer (A) having a tan ? peak temperature of ?20 to 30 DEG C and 20 to 150 parts by mass of an adhesiveness-imparting resin (B).
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: February 3, 2015
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Daiki Taneichi, Takashi Kozeki, Akihiro Koide
  • Patent number: 8815476
    Abstract: The purpose of the present invention is to produce a pellicle film, which is suppressed in light deterioration or photodecomposition due to lithography light exposure, by simpler processes. Specifically disclosed is a pellicle film for lithography containing an amorphous fluoropolymer, which is characterized by containing 5-800 ppm by mass of a fluorine-based solvent. Also specifically disclosed is a method for producing a pellicle film, which comprises: a step A wherein a coating film of a solution that contains an amorphous fluoropolymer and a fluorine-based solvent is formed; and a step B wherein the fluorine-based solvent in the coating film is removed. The method for producing a pellicle film is characterized in that 5-800 ppm by mass of the fluorine-based solvent is caused to remain in the coating film in the step B.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 26, 2014
    Assignee: Mitsui Chemicals, Inc.
    Inventor: Takashi Kozeki
  • Patent number: 8685598
    Abstract: Disclosed is a pellicle having a mask adhesive layer having appropriate softness, having a small adhesive residue after being peeled off from a mask, and having good handling characteristics; and a pellicle for preventing position deviation of patterns, in particular in double patterning. The pellicle of the present invention includes a pellicle frame, a pellicle membrane disposed on one end surface of the pellicle frame, and a mask adhesive layer disposed on other end surface of the pellicle frame; wherein the mask adhesive layer includes 35 to 170 weight parts of a hardness adjuster (B) containing a polypropylene (b1) and a propylene based elastomer (b2) per 100 weight parts of a styrene resin (A); and in an electron microscopic photograph of the mask adhesive layer, a phase-separated structure of a continuous phase of the styrene resin (A) and a discontinuous phase of the hardness adjuster (B) is observed.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: April 1, 2014
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Shuichi Murakami, Takashi Kozeki, Minehiro Mori
  • Patent number: 8507158
    Abstract: Provided is a pellicle that has appropriate membrane strength, high resistance to chemicals, and a low degree of sulfate ion generation and outgassing. A provided pellicle frame supports the outer rim of a pellicle membrane, and an epoxy resin coating is formed on the surface of the pellicle frame. In the infrared absorption spectrum of said epoxy resin coating, the ratio of the absorbance of a peak in the range between 1450 cm?1 and 1550 cm?1 to the absorbance of a peak in the range between 1200 cm?1 and 1275 cm?1 is at least 0.5 and at most 3; also, the ratio of the absorbance of a peak in the range between 1450 cm?1 and 1550 cm?1 to the absorbance of a peak in the range between 905 cm?1 and 930 cm?1 is at least 1 and less than 7.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: August 13, 2013
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Shuichi Murakami, Takashi Kozeki
  • Publication number: 20130101927
    Abstract: A pellicle which has a mask adhesive layer that can be plastic-deformed readily particularly at a temperature at which exposure to light is carried out, rarely provides a residue of an adhesive agent upon the removal of the mask adhesive layer from a mask and has good handling properties, and which can prevent the position gap of a pattern. The pellicle comprises a pellicle frame, a pellicle membrane and a mask adhesive layer containing a mask adhesive agent. The mask adhesive agent comprises 100 parts by mass of a thermoplastic elastomer (A) having a tan ? peak temperature of ?20 to 30 DEG C and 20 to 150 parts by mass of an adhesiveness-imparting resin (B).
    Type: Application
    Filed: June 29, 2011
    Publication date: April 25, 2013
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Daiki Taneichi, Takashi Kozeki, Akihiro Koide
  • Publication number: 20130095417
    Abstract: The purpose of the present invention is to produce a pellicle film, which is suppressed in light deterioration or photodecomposition due to lithography light exposure, by simpler processes. Specifically disclosed is a pellicle film for lithography containing an amorphous fluoropolymer, which is characterized by containing 5-800 ppm by mass of a fluorine-based solvent. Also specifically disclosed is a method for producing a pellicle film, which comprises: a step A wherein a coating film of a solution that contains an amorphous fluoropolymer and a fluorine-based solvent is formed; and a step B wherein the fluorine-based solvent in the coating film is removed. The method for producing a pellicle film is characterized in that 5-800 ppm by mass of the fluorine-based solvent is caused to remain in the coating film in the step B.
    Type: Application
    Filed: June 29, 2011
    Publication date: April 18, 2013
    Applicant: MITSUI CHEMICALS INC
    Inventor: Takashi Kozeki
  • Publication number: 20120202144
    Abstract: Disclosed is a pellicle having a mask adhesive layer having appropriate softness, having a small adhesive residue after being peeled off from a mask, and having good handling characteristics; and a pellicle for preventing position deviation of patterns, in particular in double patterning. The pellicle of the present invention includes a pellicle frame, a pellicle membrane disposed on one end surface of the pellicle frame, and a mask adhesive layer disposed on other end surface of the pellicle frame; wherein the mask adhesive layer includes 35 to 170 weight parts of a hardness adjuster (B) containing a polypropylene (b1) and a propylene based elastomer (b2) per 100 weight parts of a styrene resin (A); and in an electron microscopic photograph of the mask adhesive layer, a phase-separated structure of a continuous phase of the styrene resin (A) and a discontinuous phase of the hardness adjuster (B) is observed.
    Type: Application
    Filed: October 6, 2010
    Publication date: August 9, 2012
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Shuichi Murakami, Takashi Kozeki, Minehiro Mori
  • Publication number: 20120122025
    Abstract: Provided is a pellicle that has appropriate membrane strength, high resistance to chemicals, and a low degree of sulfate ion generation and outgassing. A provided pellicle frame supports the outer rim of a pellicle membrane, and an epoxy resin coating is formed on the surface of the pellicle frame. In the infrared absorption spectrum of said epoxy resin coating, the ratio of the absorbance of a peak in the range between 1450 cm?1 and 1550 cm?1 to the absorbance of a peak in the range between 1200 cm?1 and 1275 cm?1 is at least 0.5 and at most 3; also, the ratio of the absorbance of a peak in the range between 1450 cm?1 and 1550 cm?1 to the absorbance of a peak in the range between 905 cm?1 and 930 cm?1 is at least 1 and less than 7.
    Type: Application
    Filed: July 6, 2010
    Publication date: May 17, 2012
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Shuichi Murakami, Takashi Kozeki
  • Publication number: 20060115741
    Abstract: A pellicle which can prevent the formation of foreign-matter deposits on a photo-mask during laser beam irradiation or storage and keep a high pattern accuracy for an extended period of time even when an exposure is made using a KrF or ArF excimer laser beam by removing deposit-causing materials from the pellicle itself in advance. During a pellicle producing process, a component member used or a completed product is heated or placed under pressure to thereby remove in advance substances produced from the component member used or the completed product.
    Type: Application
    Filed: November 13, 2003
    Publication date: June 1, 2006
    Applicant: Mitsui Chemical, Inc.
    Inventors: Takashi Kozeki, Hiroaki Nakagawa
  • Publication number: 20050020761
    Abstract: A small account of polyvalent metal compound is added to an antistatic resin composition comprising a hydrophilic thermoplastic polymer. A shaped product of the resin composition retains permanent antistatic property and a beautiful appearance due to not only freeness from attachment of dust, etc., but also suppression of haze or discoloration caused by attachment of a gaseous soiling substance, such as an acidic and a basic gas in the air. The resin composition also provides a shaped container product free from occurrence of attached substance on an electronic part or optical part even when the part is subjected to irradiation with ultraviolet light after storage in the container product.
    Type: Application
    Filed: October 3, 2002
    Publication date: January 27, 2005
    Inventors: Shiro Arai, Katushi Momose, Hiroaki Nakagawa, Takashi Kozeki
  • Publication number: 20040028269
    Abstract: The atmosphere surrounding a photomask provided with a pellicle (2), particularly, an organic pellicle is replaced for purging with a mixed gas prepared by mixing an inert gas and a small amount of an active gas. The atmosphere in a space (8) between a mask base (1) and a pellicle (2) in a photomask is replaced for purging with a mixed gas prepared by mixing an inert gas and a small amount of an active gas.
    Type: Application
    Filed: September 24, 2002
    Publication date: February 12, 2004
    Inventors: Osamu Yamabe, Junji Miyazaki, Takashi Kozeki, Shigeto Shigematsu, Hiroaki Nakagawa