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).
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Patent number: 11702779Abstract: 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: GrantFiled: January 30, 2020Date of Patent: July 18, 2023Assignee: MITSUI CHEMICALS, INC.Inventors: Taiichiro Ichikawa, Akio Matsubara, Koichi Shimada, Shigeyuki Motomura
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Publication number: 20220081814Abstract: 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: ApplicationFiled: January 30, 2020Publication date: March 17, 2022Applicant: MITSUI CHEMICALS, INC.Inventors: Taiichiro ICHIKAWA, Akio MATSUBARA, Koichi SHIMADA, Shigeyuki MOTOMURA
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Patent number: 11254049Abstract: 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: GrantFiled: August 4, 2017Date of Patent: February 22, 2022Inventors: Akio Matsubara, Tamotsu Katayama, Masami Tamamizu, Akihiro Morita, Takahiro Uno
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Publication number: 20200362492Abstract: 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: ApplicationFiled: January 23, 2019Publication date: November 19, 2020Applicant: MITSUI CHEMICALS, INC.Inventors: Taiichiro ICHIKAWA, Koichi SHIMADA, Shigeyuki MOTOMURA, Akio MATSUBARA
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Patent number: 10415157Abstract: 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: GrantFiled: November 12, 2008Date of Patent: September 17, 2019Assignee: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Kenichi Suzuki, Shigeyuki Motomura
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Publication number: 20190160743Abstract: 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: ApplicationFiled: August 4, 2017Publication date: May 30, 2019Inventors: Akio MATSUBARA, Tamotsu KATAYAMA, Masami TAMAMIZU, Akihiro MORITA, Takahiro UNO
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Publication number: 20190053960Abstract: An absorber having an absorption layer including a superabsorbent polymer and a spunbond nonwoven fabric composed of an olefinic polymer composition.Type: ApplicationFiled: March 3, 2017Publication date: February 21, 2019Applicant: Mitsui Chemicals, Inc.Inventors: Shohei Saita, Akio Matsubara, Kenichi Suzuki
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Publication number: 20180213852Abstract: 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: ApplicationFiled: July 6, 2016Publication date: August 2, 2018Applicant: MITSUI CHEMICALS, INC.Inventors: Akio MATSUBARA, Kenichi SUZUKI
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Patent number: 9693912Abstract: 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: GrantFiled: February 15, 2012Date of Patent: July 4, 2017Assignee: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Kenichi Suzuki, Shingo Kajiyama
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Publication number: 20170065917Abstract: 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: ApplicationFiled: November 18, 2016Publication date: March 9, 2017Applicant: MITSUI CHEMICALS, INC.Inventors: Akio MATSUBARA, Kenichi NAKAMURA
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Patent number: 9404207Abstract: 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: GrantFiled: October 23, 2015Date of Patent: August 2, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo
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Publication number: 20160040335Abstract: 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: ApplicationFiled: October 23, 2015Publication date: February 11, 2016Applicant: MITSUI CHEMICALS, INC.Inventors: Akio MATSUBARA, Shingo KAJIYAMA, Kenichi SUZUKI, Hirohisa SHIODE, Takayuki KUBO
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Patent number: 9200392Abstract: 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: GrantFiled: December 5, 2011Date of Patent: December 1, 2015Assignee: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo
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Publication number: 20150316187Abstract: 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: ApplicationFiled: October 31, 2013Publication date: November 5, 2015Inventor: AKIO MATSUBARA
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Publication number: 20130317469Abstract: 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: ApplicationFiled: February 15, 2012Publication date: November 28, 2013Applicant: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Kenichi Suzuki, Shingo Kajiyama
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Publication number: 20130266874Abstract: 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: ApplicationFiled: December 5, 2011Publication date: October 10, 2013Applicant: MITSUI CHEMICALS,INC.Inventors: Akio Matsubara, Shingo Kajiyama, Kenichi Suzuki, Hirohisa Shiode, Takayuki Kubo
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Publication number: 20130122771Abstract: 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: ApplicationFiled: July 29, 2011Publication date: May 16, 2013Applicant: MITSUI CHEMICALS, INC.Inventors: Akio Matsubara, Kenichi Nakamura
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Patent number: 8295618Abstract: 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: GrantFiled: July 23, 2009Date of Patent: October 23, 2012Assignee: Ricoh Company, LimitedInventors: Tamon Sadasue, Akio Matsubara, Hiroyuki Sakuyama, Koji Kobayashi, Junichi Hara, Taku Kodama, Maiko Takenaka
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Patent number: 8265430Abstract: 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: GrantFiled: April 14, 2009Date of Patent: September 11, 2012Assignee: Ricoh Company, Ltd.Inventor: Akio Matsubara
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Patent number: 8081093Abstract: 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: GrantFiled: April 27, 2007Date of Patent: December 20, 2011Assignee: Ricoh Company, Ltd.Inventor: Akio Matsubara