Patents by Inventor Akio Matsubara

Akio Matsubara 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: 11702779
    Abstract: A spunbonded non-woven fabric includes a fiber including a propylene homopolymer having a melting point of 140° C. or more, a polyethylene having a density of from 0.941 g/cm3 to 0.970 g/cm3, and at least one polymer selected from the group consisting of a polymer represented in (I) and a polymer represented in (II). In the spunbonded non-woven fabric, the fiber includes a sea-island structure, and the percentage of an island phase having a diameter of from 0.12 ?m to less than 0.63 ?m with respect to an island phase in a cross section orthogonal to the axis direction of the fiber on a number basis is 30% or more. (I) represents a random copolymer of propylene and at least one selected from ethylene or an ?-olefin having a carbon number of from 4 to 20. (II) represents a propylene homopolymer with a melting point of less than 120° C.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: July 18, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Taiichiro Ichikawa, Akio Matsubara, Koichi Shimada, Shigeyuki Motomura
  • Publication number: 20220081814
    Abstract: A spunbonded non-woven fabric includes a fiber including a propylene homopolymer having a melting point of 140° C. or more, a polyethylene having a density of from 0.941 g/cm3 to 0.970 g/cm3, and at least one polymer selected from the group consisting of a polymer represented in (I) and a polymer represented in (II). In the spunbonded non-woven fabric, the fiber includes a sea-island structure, and the percentage of an island phase having a diameter of from 0.12 ?m to less than 0.63 ?m with respect to an island phase in a cross section orthogonal to the axis direction of the fiber on a number basis is 30% or more. (I) represents a random copolymer of propylene and at least one selected from ethylene or an ?-olefin having a carbon number of from 4 to 20. (II) represents a propylene homopolymer with a melting point of less than 120° C.
    Type: Application
    Filed: January 30, 2020
    Publication date: March 17, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Taiichiro ICHIKAWA, Akio MATSUBARA, Koichi SHIMADA, Shigeyuki MOTOMURA
  • Patent number: 11254049
    Abstract: A photocurable composition is supplied onto an auxiliary table provided to be capable of being adjacent to a fabrication table. One of the fabrication table and the auxiliary table is moved relative to the other one of the fabrication table and the auxiliary table in an up-and-down direction. The photocurable composition that has been supplied to the auxiliary table is drawn and spread by a recoater on a fabrication surface of the fabrication table or on a cured composition layer. The photocurable composition on the fabrication surface of the fabrication table is exposed by an exposure device, so that a cured composition layer is formed.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: February 22, 2022
    Inventors: Akio Matsubara, Tamotsu Katayama, Masami Tamamizu, Akihiro Morita, Takahiro Uno
  • Publication number: 20200362492
    Abstract: Provided is a spunbonded nonwoven fabric, including a fiber formed of a composition containing: a propylene homopolymer having a melting point of 140° C. or higher; a polyethylene; and at least one polymer selected from the group consisting of a polymer shown in (I), and a polymer shown in (II), in which the fiber has a sea-island structure, and an average length of an island phase is from 1 ?m to 500 ?m in a cross section taken along a major axis direction of the fiber, and a method for producing thereof, and in which the polymer shown in (I) is a random copolymer of a propylene with ?-olefin having specified number of carbon atoms and the polymer shown in (II) is a propylene homopolymer having a melting point of less than 120° C. satisfying the specified properties.
    Type: Application
    Filed: January 23, 2019
    Publication date: November 19, 2020
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Taiichiro ICHIKAWA, Koichi SHIMADA, Shigeyuki MOTOMURA, Akio MATSUBARA
  • Patent number: 10415157
    Abstract: There is provided a continuous-fiber nonwoven fabric excellent in terms of bulkiness, flexibility, and shape stability. The continuous-fiber nonwoven fabric comprises eccentric hollow conjugated continuous fiber containing a part (A), a part containing a higher melting-point thermoplastic resin (A), and a part (B), a part containing a lower melting-point thermoplastic resin (B), the parts (A) and (B) having been bonded to each other in a side by side arrangement, wherein the difference in melting point between the higher melting-point thermoplastic resin (A) and the lower melting-point thermoplastic resin (B) is 5° C. or greater, the eccentric hollow conjugated continuous fiber has a part (A):part (B) proportion in the range of 5 to 30 weight %:95 to 70 weight %, the eccentric hollow conjugated continuous fiber has a cross-section in which the thickness (a) of the part (A) is smaller than the thickness (b) of the part (B), and the eccentric hollow conjugated continuous fiber has been crimped.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: September 17, 2019
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Akio Matsubara, Kenichi Suzuki, Shigeyuki Motomura
  • Publication number: 20190160743
    Abstract: A photocurable composition is supplied onto an auxiliary table provided to be capable of being adjacent to a fabrication table. One of the fabrication table and the auxiliary table is moved relative to the other one of the fabrication table and the auxiliary table in an up-and-down direction. The photocurable composition that has been supplied to the auxiliary table is drawn and spread by a recoater on a fabrication surface of the fabrication table or on a cured composition layer. The photocurable composition on the fabrication surface of the fabrication table is exposed by an exposure device, so that a cured composition layer is formed.
    Type: Application
    Filed: August 4, 2017
    Publication date: May 30, 2019
    Inventors: Akio MATSUBARA, Tamotsu KATAYAMA, Masami TAMAMIZU, Akihiro MORITA, Takahiro UNO
  • Publication number: 20190053960
    Abstract: An absorber having an absorption layer including a superabsorbent polymer and a spunbond nonwoven fabric composed of an olefinic polymer composition.
    Type: Application
    Filed: March 3, 2017
    Publication date: February 21, 2019
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Shohei Saita, Akio Matsubara, Kenichi Suzuki
  • Publication number: 20180213852
    Abstract: A spunbond nonwoven fabric, including a composition including a propylene homopolymer having a melting point of 140° C. or higher, a polyethylene, and at least one polymer selected from the group consisting of a polymer shown in (I) and a polymer shown in (II), in which the total content of the polymer shown in (I) and the polymer shown in (II) is in a range of from 5% by mass to 30% by mass with respect to the total amount of the composition. The polymer shown in (I) is a random copolymer of propylene and an ?-olefin having a specific number of carbon atoms, and the polymer shown in (II) is a propylene homopolymer having a melting point less than 120° C. and exhibiting specific physical properties.
    Type: Application
    Filed: July 6, 2016
    Publication date: August 2, 2018
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Akio MATSUBARA, Kenichi SUZUKI
  • Patent number: 9693912
    Abstract: An object of the invention is to obtain spunbonded nonwoven fabrics including thin hollow fibers which have excellent lightweight properties and uniformity as well as exhibit high strength and flexibility. An aspect of the invention is directed to a spunbonded nonwoven fabric including hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c): (a) the C-axis orientation is at least 0.85, (b) the average fiber diameter is 5 to 20 ?m, and (c) the hollowness is 5 to 30%.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: July 4, 2017
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Akio Matsubara, Kenichi Suzuki, Shingo Kajiyama
  • Publication number: 20170065917
    Abstract: The present invention provides a method for producing a non-woven fiber fabric by spinning a molten polymer. Thus, a non-woven fiber fabric which is substantially free from a solvent, different from the case of spinning a polymer solution, but yet has an extremely small fiber size (diameter of 0.5 ?m or less) is provided. The non-woven fiber fabric comprises an olefin-based thermoplastic resin fiber, said fiber having an average fiber size of 0.01-0.5 ?m, and said non-woven fiber fabric having an average pore size of 0.01-10.0 ?m and being free from a solvent component.
    Type: Application
    Filed: November 18, 2016
    Publication date: March 9, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Akio MATSUBARA, Kenichi NAKAMURA
  • Patent number: 9404207
    Abstract: It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 ?m, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: August 2, 2016
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo
  • Publication number: 20160040335
    Abstract: It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 ?m, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.
    Type: Application
    Filed: October 23, 2015
    Publication date: February 11, 2016
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Akio MATSUBARA, Shingo KAJIYAMA, Kenichi SUZUKI, Hirohisa SHIODE, Takayuki KUBO
  • Patent number: 9200392
    Abstract: It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 ?m, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: December 1, 2015
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo
  • Publication number: 20150316187
    Abstract: A holding unit (6) according to the invention is applied to a corrugated pipe (1) to prevent accidental disconnection of a pipe joint (2). The holding unit (6) includes a first holder (7). The first holder (7) has a ridge (71) protruding from the outer surface of a cylindrical base (70) and is received on the inner surface of a protrusion (P1) of the corrugated pipe (1). A notch (73) extends along the axial direction (L) of the cylindrical base (70).
    Type: Application
    Filed: October 31, 2013
    Publication date: November 5, 2015
    Inventor: AKIO MATSUBARA
  • Publication number: 20130317469
    Abstract: An object of the invention is to obtain spunbonded nonwoven fabrics including thin hollow fibers which have excellent lightweight properties and uniformity as well as exhibit high strength and flexibility. An aspect of the invention is directed to a spunbonded nonwoven fabric including hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c): (a) the C-axis orientation is at least 0.85, (b) the average fiber diameter is 5 to 20 ?m, and (c) the hollowness is 5 to 30%.
    Type: Application
    Filed: February 15, 2012
    Publication date: November 28, 2013
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Akio Matsubara, Kenichi Suzuki, Shingo Kajiyama
  • Publication number: 20130266874
    Abstract: It is an object of the present invention to provide a stable production process for a melt-blown nonwoven fabric comprising thin fibers and having extremely few thick fibers [number of fusion-bonded fibers] formed by fusion bonding of thermoplastic resin fibers to one another, and an apparatus for the same. The present invention relates to a melt-blown nonwoven fabric comprising polyolefin fibers and having (i) a mean fiber diameter of not more than 2.0 ?m, (ii) a fiber diameter distribution CV value of not more than 60%, and (iii) 15 or less fusion-bonded fibers based on 100 fibers; a production process for a melt-blown nonwoven fabric characterized by feeding cooling air of not higher than 30° C. from both side surfaces of outlets of slits 31 from which high-temperature high-velocity air is gushed out and thereby cooling the spun molten resin; and a production apparatus for the same.
    Type: Application
    Filed: December 5, 2011
    Publication date: October 10, 2013
    Applicant: MITSUI CHEMICALS,INC.
    Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo
  • Publication number: 20130122771
    Abstract: The present invention provides a method for producing a non-woven fiber fabric by spinning a molten polymer. Thus, a non-woven fiber fabric which is substantially free from a solvent, different from the case of spinning a polymer solution, but yet has an extremely small fiber size (diameter of 0.5 ?m or less) is provided. The non-woven fiber fabric comprises an olefin-based thermoplastic resin fiber, said fiber having an average fiber size of 0.01-0.5 ?m, and said non-woven fiber fabric having an average pore size of 0.01-10.0 ?m and being free from a solvent component.
    Type: Application
    Filed: July 29, 2011
    Publication date: May 16, 2013
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Akio Matsubara, Kenichi Nakamura
  • Patent number: 8295618
    Abstract: In an image processing apparatus, an encoding unit encodes a processed image; a determining unit determines whether a reference pixel has been subjected to the image processing; and a decoding unit decodes, when the determining unit determines that the reference pixel has been subjected to the image processing, a piece of rectangular block code data of a rectangular block thereby acquiring a second decoded image. The encoding unit refers to, when the determining unit determines that the reference pixel has been subjected to the image processing, the processed image and encodes the second decoded image.
    Type: Grant
    Filed: July 23, 2009
    Date of Patent: October 23, 2012
    Assignee: Ricoh Company, Limited
    Inventors: Tamon Sadasue, Akio Matsubara, Hiroyuki Sakuyama, Koji Kobayashi, Junichi Hara, Taku Kodama, Maiko Takenaka
  • Patent number: 8265430
    Abstract: An image processing system includes a plurality of clients, a plurality of servers, and a computer. The computer includes a user application and a multi-target controller. The user application interactively operates with a user. The multi-target controller causes the plurality of clients to synchronously access the plurality of servers in response to a request from the user application, acquire from the plurality of servers a plurality of pieces of target data corresponding to a plurality of sub-regions in a draw region of the user application, and expand the plurality of pieces of target data into a plurality of pieces of draw data. The multi-target controller further combines the plurality of pieces of draw data returned from the plurality of clients into single draw data and passes the single draw data to the user application.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: September 11, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Akio Matsubara
  • Patent number: 8081093
    Abstract: A code transforming apparatus inputs therein a first codestream of a target file, and outputs a second codestream transformed from the first codestream. In the code transforming apparatus, a BOX decomposing unit extracts BOX information from the first codestream. A sharing/referencing determining unit determines whether sharing process or referencing process is to be performed on the BOX information. A sharing/referencing processing unit performs the sharing process or the referencing process on the BOX information based on a determination result from the sharing/referencing determining unit. The sharing/referencing processing unit can specify a logical set of codes on a referenced side as a unit of reference for referencing an incremental codestream.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: December 20, 2011
    Assignee: Ricoh Company, Ltd.
    Inventor: Akio Matsubara