Patents by Inventor Yasushi Usami
Yasushi Usami 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: 20230276577Abstract: A method for manufacturing a wiring substrate includes preparing a first support plate having a metal foil formed on surface of a support substrate, forming a wiring substrate on the foil such that the wiring substrate has first surface facing the foil, attaching a second support plate to second surface of the wiring substrate, and separating the support substrate from the foil after attaching the second support plate such that the foil is removed from the first surface and that the first surface is exposed. The wiring substrate has first conductor pads on the first surface, and second conductor pads on the second surface, and the method includes conducting first inspection such that conduction between the second pads is inspected before attaching the second plate to the second surface, and conducting second inspection such that conduction between the first pads is inspected after removing the foil from the first surface.Type: ApplicationFiled: February 27, 2023Publication date: August 31, 2023Applicant: IBIDEN CO., LTD.Inventor: Yasushi USAMI
-
Patent number: 10645819Abstract: A printed wiring board includes a core substrate having cavity to accommodate an electronic component and including a front conductor layer formed on front side of the core substrate, and a back conductor layer formed on back side of the core substrate, through-hole conductors formed through the core substrate such that the through-hole conductors connect the front and back conductor layers of the core substrate, a front build-up layer formed on front surface of the core substrate and including interlayer insulating layers and conductor layers, and a back build-up layer formed on back surface of the core substrate and including interlayer insulating layers and conductor layers. The conductor layers in the front build-up layer include a conductor layer sandwiching one of the interlayer insulating layers with the front conductor layer such that the conductor layer and the front conductor layer have the same electric potential in region surrounding the cavity.Type: GrantFiled: December 27, 2018Date of Patent: May 5, 2020Assignee: IBIDEN CO., LTD.Inventors: Toshiki Furutani, Takema Adachi, Toshihide Makino, Yasushi Usami
-
Publication number: 20190200462Abstract: A printed wiring board includes a core substrate having cavity to accommodate an electronic component and including a front conductor layer formed on front side of the core substrate, and a back conductor layer formed on back side of the core substrate, through-hole conductors formed through the core substrate such that the through-hole conductors connect the front and back conductor layers of the core substrate, a front build-up layer formed on front surface of the core substrate and including interlayer insulating layers and conductor layers, and a back build-up layer formed on back surface of the core substrate and including interlayer insulating layers and conductor layers. The conductor layers in the front build-up layer include a conductor layer sandwiching one of the interlayer insulating layers with the front conductor layer such that the conductor layer and the front conductor layer have the same electric potential in region surrounding the cavity.Type: ApplicationFiled: December 27, 2018Publication date: June 27, 2019Applicant: IBIDEN CO., LTD.Inventors: Toshiki Furutani, Takema Adachi, Toshihide Makino, Yasushi Usami
-
Patent number: 9419266Abstract: This polyolefin resin porous film can be easily produced, and when used as a non-aqueous electrolyte cell separator, can suppress clogging and can evince a high cell output. The polyolefin resin porous film is a porous film having a polyolefin resin as the primary component and is characterized by the average flow diameter pressure (PAP) being 1500-2500 kPa, the bubble point pressure (PBP) being 300-1500 kPa, and the ratio (Pa/PAP) of the air permeability (Pa) and the bubble point pressure (PBP) being no greater than 0.35 sec/(100 ml·kPa).Type: GrantFiled: January 23, 2012Date of Patent: August 16, 2016Assignee: Mitsubishi Plastics, Inc.Inventors: Toru Terakawa, Takeyoshi Yamada, Yasushi Usami
-
Publication number: 20160099452Abstract: Disclosed is a laminated porous film which has both gas permeability and heat resistance and can exhibit excellent smoothness and excellent pin extraction properties when used as a separator for a battery. The laminated porous film is characterized by having a heat-resistant layer laminated on at least one surface of a polyolefin resin porous film, wherein the heat-resistant layer comprises a filler and a resin binder, and wherein the surface of the heat-resistant layer has a static friction coefficient of 0.45 or less, a gas permeability degree of 2000 sec/100 ml or less and a tensile elastic modulus of 400 to 1000 MPa when the film is stretched in the lengthwise direction at a stretching rate of 3%.Type: ApplicationFiled: December 14, 2015Publication date: April 7, 2016Applicant: Mitsubishi Plastics, Inc.Inventors: Yoshihito TAKAGI, Satoru Imanaka, Tomoyuki Nemoto, Yasushi Usami
-
Publication number: 20150125734Abstract: The purpose of the present invention is to provide a polyolefin resin porous film, which is resistant to wrinkling in a transporting step in a high-temperature environment due to a high shrinkage stress, has superior coating suitability, maintains pore interconnectivity, and thus has superior air permeability. The polyolefin resin porous film of the present invention has a 1% modulus in the flow direction at 90° C. of 4.5 MPa or more and an air permeability of 800 sec/100 ml or less.Type: ApplicationFiled: June 5, 2013Publication date: May 7, 2015Applicant: MITSUBISHI PLASTICS, INC.Inventors: Takeyoshi Yamada, Yasushi Usami, Kouji Takegawa
-
Publication number: 20150044541Abstract: Disclosed is a laminated porous film which has both gas permeability and heat resistance and can exhibit excellent smoothness and excellent pin extraction properties when used as a separator for a battery. The laminated porous film is characterized by having a heat-resistant layer laminated on at least one surface of a polyolefin resin porous film, wherein the heat-resistant layer comprises a filler and a resin binder, and wherein the surface of the heat-resistant layer has a static friction coefficient of 0.45 or less, a gas permeability degree of 2000 sec/100 ml or less and a tensile elastic modulus of 400 to 1000 MPa when the film is stretched in the lengthwise direction at a stretching rate of 3%.Type: ApplicationFiled: July 29, 2014Publication date: February 12, 2015Applicant: Mitsubishi Plastics, Inc.Inventors: Yoshihito Takagi, Satoru Imanaka, Tomoyuki Nemoto, Yasushi Usami
-
Publication number: 20140087167Abstract: Provided is a porous polypropylene film having both air permeability properties and puncture strength. A porous polypropylene film which has an air permeability of 700 seconds/100 ml or less and a puncture strength of 1.5 N or greater, and has ? activity can be obtained when the porous polypropylene film is made to have a tensile strength in the machine direction of the film, EMD, of 100 MPa or greater, a tensile strength in the transverse direction to the machine direction, ETD, of less than 100 MPa, and a ratio of EMD and ETD, EMD/ETD, of 1.5 to 10.Type: ApplicationFiled: November 27, 2013Publication date: March 27, 2014Inventors: Takeyoshi YAMADA, Yasushi Usami, Toru Terakawa
-
Patent number: 8680169Abstract: Provided is a porous polypropylene film having both air permeability properties and puncture strength. A porous polypropylene film which has an air permeability of 700 seconds/100 ml or less and a puncture strength of 1.5 N or greater, and has ? activity can be obtained when the porous polypropylene film is made to have a tensile strength in the machine direction of the film, EMD, of 100 MPa or greater, a tensile strength in the transverse direction to the machine direction, ETD, of less than 100 MPa, and a ratio of EMD and ETD, EMD/ETD, of 1.5 to 10.Type: GrantFiled: June 16, 2010Date of Patent: March 25, 2014Assignee: Mitsubishi Plastics, Inc.Inventors: Takeyoshi Yamada, Yasushi Usami, Toru Terakawa
-
Patent number: 8597836Abstract: An object of this invention is to improve battery performance such as a rate capability of a nonaqueous electrolyte solution secondary battery using a separator constituting a thermoplastic resin-based porous film containing a filler. This invention provides a nonaqueous electrolyte solution secondary battery separator which is formed from a porous film containing a thermoplastic resin and a filler contained in the thermoplastic resin and has a content of chlorine of 10 ppm or less or a content of iron of 100 ppm or less as well as relates to a nonaqueous electrolyte solution secondary battery using this separator.Type: GrantFiled: March 14, 2011Date of Patent: December 3, 2013Assignees: Mitsubishi Chemical Corporation, Mitsubishi Plastics, Inc.Inventors: Satoshi Nakashima, Yasushi Usami, Kazutaka Sakaki
-
Patent number: 8592071Abstract: A laminated porous film having at least two porous layers layered one upon another. One porous layer consists of a resin layer containing a polypropylene resin. The other layer is a heat-resistant layer consisting of a resin composition whose crystal fusion peak temperature is higher than that of the resin composition of the layer containing the polypropylene resin. The laminated porous film has a ? activity and/or a ? crystal generation power.Type: GrantFiled: February 26, 2010Date of Patent: November 26, 2013Assignee: Mitsubishi Plastics, Inc.Inventors: Yasushi Usami, Takeyoshi Yamada, Jun Takagi
-
Publication number: 20130288132Abstract: This polyolefin resin porous film can be easily produced, and when used as a non-aqueous electrolyte cell separator, can suppress clogging and can evince a high cell output. The polyolefin resin porous film is a porous film having a polyolefin resin as the primary component and is characterized by the average flow diameter pressure (PAP) being 1500-2500 kPa, the bubble point pressure (PBP) being 300-1500 kPa, and the ratio (Pa/PAP) of the air permeability (Pa) and the bubble point pressure (PBP) being no greater than 0.35 sec/(100 ml·kPa).Type: ApplicationFiled: January 23, 2012Publication date: October 31, 2013Applicant: Mitsubishi Plastics, Inc.Inventors: Toru Terakawa, Takeyoshi Yamada, Yasushi Usami
-
Patent number: 8486555Abstract: A process for producing a porous laminate having many micropores interconnected in the thickness direction, which comprises: a step in which a laminate is produced which comprises at least three layers comprising an interlayer made of a thermoplastic resin having a hard segment and a soft segment and two nonporous outer layers made of a filler-containing resin and located as outer layers respectively on both sides of the interlayer; a step in which the laminate obtained is impregnated with a supercritical or subcritical fluid and this state is relieved to vaporize the fluid and thereby make the interlayer porous; and a step in which the two nonporous outer layers located respectively on both sides are made porous by stretching.Type: GrantFiled: September 21, 2006Date of Patent: July 16, 2013Assignee: Mitsubishi Plastics, Inc.Inventors: Yasushi Usami, Tomoyuki Nemoto, Jun Takagi, Satoshi Teshima
-
Patent number: 8426054Abstract: A laminated porous film having a shutdown (SD) property and a high breakdown (BD) property combined includes at least two layers, which are a porous membrane layer (A layer) having a thickness of 10 ?m or greater other than non-woven fabric and a non-woven fabric layer (B layer) having a fiber diameter of 1 ?m or less. A value of the ratio (AP1/AP2) between air permeability when heating at a heating temperature of 150° C. to 200° C. for three minutes (AP1) and air permeability prior to heating (AP2) is 10 or greater at any heating temperature between 150° C. and 200° C.Type: GrantFiled: May 7, 2008Date of Patent: April 23, 2013Assignee: Mitsubishi Plastics, Inc.Inventors: Yasushi Usami, Takeyoshi Yamada, Jun Takagi
-
Publication number: 20130017430Abstract: As an object of the present invention, to provide a polyolefin resin porous film fulfilling high continuity, excellent dimensional stability and shutdown function which closes the pores sensitively and completely in a temperature range of 120 to 140° C. without closing the pores at less than 120° C. The present invention relates to a polyolefin resin porous film having at least one layer each of a layer comprising as the main component a polypropylene resin composition (A) and a layer comprising as the main component a polyethylene resin composition (B) fulfilling the condition (i) the melting point of the polyethylene resin composition (B) is 130° C. or higher, and the condition (ii) the melt flow rate (MFR) of the polyethylene resin composition (B) is 2.0 to 15 g/10 minutes.Type: ApplicationFiled: March 15, 2011Publication date: January 17, 2013Applicant: MITSUBISHI PLASTICS, INCInventors: Toru Terakawa, Takeyoshi Yamada, Yasushi Usami
-
Publication number: 20130017452Abstract: As a porous film in which the air-permeability at the time of elongation of the porous film was adjusted, whereby, when used as a battery separator, the holes of a separator in an electrode/separator wound body have been controlled, a polypropylene series resin porous film is proposed, in which, for a porous film having a polypropylene series resin as the main component, regarding air-permeability (Pa) prior to elongation and air-permeability (Pa?) at 5% elongation, (1) Pa? is 1,000 seconds/100 ml or less and (2) Pa?/Pa is 1.5 or less.Type: ApplicationFiled: March 15, 2011Publication date: January 17, 2013Applicant: MITSUBISHI PLASTICS, INC.Inventors: Miho Yamamoto, Takeyoshi Yamada, Yasushi Usami
-
Publication number: 20130011743Abstract: In order to provide a porous polypropylene film in which the ratio of change in air permeability is small and the initial air-permeating property is satisfactory even under high temperature environment, a porous polypropylene film is proposed, satisfying the following conditions (1) and (2) regarding air-permeability (Pa1) at 20° C. and air-permeability (Pa2) after heating at 95° C.Type: ApplicationFiled: March 17, 2011Publication date: January 10, 2013Applicant: MITSUBISHI PLASTICS, INC.Inventors: Takeyoshi Yamada, Miho Yamamoto, Yasushi Usami
-
Publication number: 20120329894Abstract: Regarding a polypropylene series resin porous film having a polypropylene series resin as the main component, so as to exert excellent slipping ability and processability when used as a battery separator, a polypropylene series resin porous film fabricated in such a way that the coefficient of static friction against film is greater than the coefficient of static friction against SUS is proposed.Type: ApplicationFiled: March 1, 2011Publication date: December 27, 2012Applicant: MITSUBISHI PLASTICS, INC.Inventors: Miho Yamamoto, Takeyoshi Yamada, Yasushi Usami
-
Patent number: 8288033Abstract: Provided is a laminated porous film having excellent shutdown characteristics and breakdown characteristics, good tearing strength and dimensional stability, and B activity. The laminated porous film comprises layer A, the main component of which is a polypropylene resin, and layer B which contains a polyethylene resin, and the ratio of the rearing strength (HMD) in the machine direction (MD) of the laminated porous film and the tearing strength (HTD) in the transverse direction (TD) of the laminated porous film with respect to the machine direction (HMD) (HTD) is 0.08 to 2.0.Type: GrantFiled: November 9, 2009Date of Patent: October 16, 2012Assignee: Mitsubishi Plastics, Inc.Inventors: Toru Terakawa, Miho Yamamoto, Takeyoshi Yamada, Yasushi Usami
-
Publication number: 20120231323Abstract: Disclosed is a laminated porous film which has both gas permeability and heat resistance and can exhibit excellent smoothness and excellent pin extraction properties when used as a separator for a battery. The laminated porous film is characterized by having a heat-resistant layer laminated on at least one surface of a polyolefin resin porous film, wherein the heat-resistant layer comprises a filler and a resin binder, and wherein the surface of the heat-resistant layer has a static friction coefficient of 0.45 or less, a gas permeability degree of 2000 sec/100 ml or less and a tensile elastic modulus of 400 to 1000 MPa when the film is stretched in the lengthwise direction at a stretching rate of 3%.Type: ApplicationFiled: November 22, 2010Publication date: September 13, 2012Applicant: MITSUBHISHI PLASTICS, INC.Inventors: Yoshihito Takagi, Satoru Imanaka, Tomoyuki Nemoto, Yasushi Usami