Patents by Inventor Yoshiaki Aso
Yoshiaki Aso 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: 9194391Abstract: A plunger seal and a backup ring are provided at a portion of a pump chamber through which a plunger is inserted. A back face of the backup ring is supported on a wall face of a cleaning chamber. The backup ring is a combined backup ring including two resin layers, i.e., a deformable resin layer and a non-deformable resin layer. A face of the backup ring in contact with the plunger seal is made up of a face of the deformable resin layer and an inner peripheral face is made up of a face of the non-deformable resin layer. The deformable resin layer has a higher elastic modulus than the plunger seal and having such an elastic modulus as to be able to absorb deformation of the plunger seal. The non-deformable resin layer has a higher elastic modulus than resin of the deformable resin layer.Type: GrantFiled: July 25, 2011Date of Patent: November 24, 2015Assignee: SHIMADZU CORPORATIONInventor: Yoshiaki Aso
-
Patent number: 9161483Abstract: An electronic module includes a mold body in which an electronic component mounted on a circuit substrate is sealed by a mold resin; and a shield film formed to cover upper and side surfaces of the mold body, the shield film being a metal evaporated film formed by physical vapor deposition.Type: GrantFiled: January 30, 2013Date of Patent: October 13, 2015Assignee: MITSUMI ELECTRIC CO., LTD.Inventors: Yoshiaki Aso, Akira Akiyoshi
-
Patent number: 9086064Abstract: A plunger seal has a cylindrical protruding portion on its front face. A base end portion of the protruding portion has a recessed curved shape having a certain curvature. In a portion of a pump head, where the plunger seal is mounted, a seal insertion portion into which the protruding portion of the plunger seal is to be fitted is formed as a cylindrical recessed portion. An opening edge portion of the seal insertion portion has a protruding curved shape having the same curvature as the base end portion of the protruding portion of the plunger seal.Type: GrantFiled: April 18, 2012Date of Patent: July 21, 2015Assignee: SHIMADZU CORPORATIONInventors: Yoshiaki Aso, Kumiko Jingu, Fujio Inoue
-
Patent number: 8985144Abstract: A plurality of suctioning flow paths for suctioning mobile phases meet each other at a meeting portion. The meeting portion is connected to an inlet flow path communicating with an inlet of a reciprocating pump. The suctioning flow paths are respectively provided with solenoid valves for opening and closing the respective flow paths. The suctioning flow paths are respectively provided with orifices between the solenoid valves and the meeting portion. The orifices are sections of the respective suctioning flow paths having smaller diameters.Type: GrantFiled: December 20, 2011Date of Patent: March 24, 2015Assignee: Shimadzu CorporationInventors: Yoshiaki Aso, Fujio Inoue
-
Patent number: 8648151Abstract: The invention provides a piezoelectric polymer material including a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and having optical activity, the piezoelectric polymer material having a piezoelectric constant d14 at 25° C. of 10 pC/N or more, a degree of crystallinity obtained by X-ray diffraction of from 40% to 80%, and a haze of from 0.5 to 30.Type: GrantFiled: March 15, 2010Date of Patent: February 11, 2014Assignees: Mitsui Chemicals, Inc., A School Corporation Kansai UniversityInventors: Mitsunobu Yoshida, Masanobu Ajioka, Kenichi Goto, Ichiro Fujio, Takaharu Isaki, Takayuki Onogi, Yoshiro Tajitsu, Shinichi Usugi, Takeshi Karino, Yoshiaki Aso
-
Publication number: 20130194756Abstract: An electronic module includes a mold body in which an electronic component mounted on a circuit substrate is sealed by a mold resin; and a shield film formed to cover upper and side surfaces of the mold body, the shield film being a metal evaporated film formed by physical vapor deposition.Type: ApplicationFiled: January 30, 2013Publication date: August 1, 2013Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Yoshiaki ASO, Akira Akiyoshi
-
Patent number: 8485023Abstract: A cleaning chamber is provided in a seal holder and two cleaning chamber flow paths communicating with the cleaning chamber from outside are provided. A pipe connected to a vessel storing a mobile phase is connected to one of the cleaning chamber flow paths. A pipe as a flow path connected to a mobile phase sucking flow path into a pump chamber is connected to the other cleaning chamber flow path. When the mobile phase is taken in, the mobile phase is sucked into the pump chamber via the cleaning chamber.Type: GrantFiled: July 25, 2011Date of Patent: July 16, 2013Assignee: Shimadzu CorporationInventor: Yoshiaki Aso
-
Patent number: 8382454Abstract: A check valve capable of improving the tightness between a sphere and a valve seat and suppressing the sinking is provided, so as to provide a liquid chromatography infusion pump enabling a high precision infusion even if in a low flow rate region. On a surface, contacted with the sphere, on the valve seat 10 of the check valve, a rim 10r is disposed around a through hole 10h in the center of the valve seat 10. The rim 10r is formed as a boundary between a concave spherical surface of a diameter ?1 and a concave spherical surface of a diameter ?2 disposed as concentric circles with the through hole 10h. When the sphere of a diameter ?B abuts against the valve seat 10, the sphere 15 abuts against the valve seat 10 at the annular rim 10r in a line contact according to a relation of ?1>?B>?2.Type: GrantFiled: October 3, 2008Date of Patent: February 26, 2013Assignee: Shimadzu CorporationInventor: Yoshiaki Aso
-
Publication number: 20130008535Abstract: A plurality of suctioning flow paths for suctioning mobile phases meet each other at a meeting portion. The meeting portion is connected to an inlet flow path communicating with an inlet of a reciprocating pump. The suctioning flow paths are respectively provided with solenoid valves for opening and closing the respective flow paths. The suctioning flow paths are respectively provided with orifices between the solenoid valves and the meeting portion. The orifices are sections of the respective suctioning flow paths having smaller diameters.Type: ApplicationFiled: December 20, 2011Publication date: January 10, 2013Applicant: SHIMADZU CORPORATIONInventors: Yoshiaki Aso, Fujio Inoue
-
Publication number: 20120288386Abstract: A plunger seal has a cylindrical protruding portion on its front face. A base end portion of the protruding portion has a recessed curved shape having a certain curvature. In a portion of a pump head, where the plunger seal is mounted, a seal insertion portion into which the protruding portion of the plunger seal is to be fitted is formed as a cylindrical recessed portion. An opening edge portion of the seal insertion portion has a protruding curved shape having the same curvature as the base end portion of the protruding portion of the plunger seal.Type: ApplicationFiled: April 18, 2012Publication date: November 15, 2012Applicant: SHIMADZU CORPORATIONInventors: Yoshiaki ASO, Kumiko JINGU, Fujio INOUE
-
Patent number: 8272855Abstract: Operability and lifespan of a drain valve of an operated infusion device are improved when changing the composition of a transported solution or releasing the pressure. A sealing portion and a shaft portion of the valve are constructed to be separated from each other. The shaft portion is disposed with a through hole having a step. A screw passes through the through hole, such that a screw portion of the screw is screwed to the sealing portion, and on the other hand, a screw head is fastened to the step portion of the through hole of the shaft portion. The sealing portion and the shaft portion can ensure a degree of freedom of rotation while maintaining a fixed position relationship there-between, thereby preventing the sealing portion from falling off and prolonging the lifespan of a valve body.Type: GrantFiled: October 15, 2008Date of Patent: September 25, 2012Assignee: Shimadzu CorporationInventor: Yoshiaki Aso
-
Publication number: 20120094134Abstract: [Subject] The present invention provides a poly-4-methyl-1-pentene resin composition having improved film strength and molding properties for various molded articles with maintaining release properties which are inherent in poly-4-methyl-1-pentene, and also provides molded articles formed from the resin composition. [Means for solving the subject] The subject is attained by the poly-4-methyl-1-pentene resin composition comprising 50 to 99 parts by weight of poly-4-methyl-1-pentene (A), 1 to 50 parts by weight of polyamide (B) and 0.1 to 30 parts by weight of modified poly-4-methyl-1-pentene (C) obtainable by graft modification with an ethylenic unsaturated bond-containing monomer, provided that the total amount of (A) and (B) is 100 parts by weight.Type: ApplicationFiled: October 18, 2011Publication date: April 19, 2012Applicant: MITSUI CHEMICALS. INC.Inventors: Masahiro ENNA, Kazutoshi Fujihara, Yasuhito Tsugane, Yoshiaki Aso, Ryoichi Seki
-
Publication number: 20120031264Abstract: A plunger seal and a backup ring are provided at a portion of a pump chamber through which a plunger is inserted. A back face of the backup ring is supported on a wall face of a cleaning chamber. The backup ring is a combined backup ring including two resin layers, i.e., a deformable resin layer and a non-deformable resin layer. A face of the backup ring in contact with the plunger seal is made up of a face of the deformable resin layer and an inner peripheral face is made up of a face of the non-deformable resin layer. The deformable resin layer is a resin layer having a higher elastic modulus than the plunger seal and having such an elastic modulus as to be able to absorb deformation of the plunger seal. The non-deformable resin layer is a resin layer having a higher elastic modulus than resin of the deformable resin layer.Type: ApplicationFiled: July 25, 2011Publication date: February 9, 2012Applicant: SHIMADZU CORPORATIONInventor: Yoshiaki Aso
-
Publication number: 20120031174Abstract: A cleaning chamber is provided in a seal holder and two cleaning chamber flow paths communicating with the cleaning chamber from outside are provided. A pipe connected to a vessel storing a mobile phase is connected to one of the cleaning chamber flow paths. A pipe as a flow path connected to a mobile phase sucking flow path into a pump chamber is connected to the other cleaning chamber flow path. When the mobile phase is taken in, the mobile phase is sucked into the pump chamber via the cleaning chamber.Type: ApplicationFiled: July 25, 2011Publication date: February 9, 2012Applicant: SHIMADZU CORPORATIONInventor: Yoshiaki Aso
-
Publication number: 20120025674Abstract: The invention provides a piezoelectric polymer material including a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and having optical activity, the piezoelectric polymer material having a piezoelectric constant d14 at 25° C. of 10 pC/N or more, a degree of crystallinity obtained by X-ray diffraction of from 40% to 80%, and a haze of from 0.5 to 30.Type: ApplicationFiled: March 15, 2010Publication date: February 2, 2012Applicants: A school Corporation Kansai University, Mitsui Chemicals, Inc.Inventors: Mitsunobu Yoshida, Masanobu Ajioka, Kenichi Goto, Ichiro Fujio, Takaharu Isaki, Takayuki Onogi, Yoshiro Tajitsu, Shinichi Usugi, Takeshi Karino, Yoshiaki Aso
-
Publication number: 20110318205Abstract: A solvent delivery pump is provided, which includes: a cylindrical pump chamber, an inside of which is made of metal; a plunger inserted from a tip end into the pump chamber to reciprocate in a certain direction to increase and decrease a capacity in the pump chamber; a capacity decreasing member made of resin and covering at least a portion of an inner wall of the pump chamber to reduce a clearance from the plunger; and a seal member provided to a plunger insertion portion of the pump chamber to come in sliding contact with an outer peripheral face of the plunger to seal the pump chamber. Preferable examples of the capacity decreasing member are a cylindrical sleeve covering at least a portion of an inner peripheral face of the pump chamber, a spacer disposed on an innermost face of the pump chamber to reduce a clearance from a tip end face of the plunger which has reached a top dead center, or both of the sleeve and the spacer.Type: ApplicationFiled: June 20, 2011Publication date: December 29, 2011Applicant: SHIMADZU CORPORATIONInventor: Yoshiaki Aso
-
Publication number: 20100233415Abstract: The present invention is to provide an optical recording medium which is capable of performing good recording and reproducing by using a laser having a wavelength of 300 to 900 nm, a novel azo metal chelate compound, and a novel azo compound. Furthermore, the present invention is to provide an optical recording medium having an azo metal chelate compound in a recording layer.Type: ApplicationFiled: January 19, 2007Publication date: September 16, 2010Applicant: Mitsui Chemicals, Inc.Inventors: Taizo Nishimoto, Tsutomu Ishida, Kazuhiro Seino, Masataka Miyasato, Kenichi Fuji, Masao Imai, Eiichi Takahashi, Keiji Ueno, Hideo Usui, Yoshiaki Aso, Akira Ogiso, Rihoko Suzuki, Satoshi Kinoshita, Akihiro Kohsaka, Kenichi Kato, Takafumi Yoshida, Hiroyuki Sasaki, Yojiro Kumagae
-
Publication number: 20090162227Abstract: Operability and lifespan of a drain valve of an operated infusion device are improved when changing the composition of a transported solution or releasing the pressure. A sealing portion and a shaft portion of the valve are constructed to be separated from each other. The shaft portion is disposed with a through hole having a step. A screw passes through the through hole, such that a screw portion of the screw is screwed to the sealing portion, and on the other hand, a screw head is fastened to the step portion of the through hole of the shaft portion. The sealing portion and the shaft portion can ensure a degree of freedom of rotation while maintaining a fixed position relationship there-between, thereby preventing the sealing portion from falling off and prolonging the lifespan of a valve body.Type: ApplicationFiled: October 15, 2008Publication date: June 25, 2009Applicant: SHIMADZU CORPORATIONInventor: YOSHIAKI ASO
-
Publication number: 20090104083Abstract: A check valve capable of improving the tightness between a sphere and a valve seat and suppressing the sinking is provided, so as to provide a liquid chromatography infusion pump enabling a high precision infusion even if in a low flow rate region. On a surface, contacted with the sphere, on the valve seat 10 of the check valve, a rim 10r is disposed around a through hole 10h in the center of the valve seat 10. The rim 10r is formed as a boundary between a concave spherical surface of a diameter ?1 and a concave spherical surface of a diameter ?2 disposed as concentric circles with the through hole 10h. When the sphere of a diameter ?B abuts against the valve seat 10, the sphere 15 abuts against the valve seat 10 at the annular rim 10r in a line contact according to a relation of ?1>?B>?2.Type: ApplicationFiled: October 3, 2008Publication date: April 23, 2009Applicant: SHIMADZU CORPORATIONInventor: Yoshiaki Aso
-
Publication number: 20090098410Abstract: Disclosed is a trimethine dimer compound represented by the following general formula (I) and optical recording medium containing such a compound in a recording layer. (I)(In the formula, symbols are as in the description. When both Xa2 and Xb2 are imino groups, one of Xa1, Xb1, Xa3 and Xb3 is necessarily a 1-alkyl-1-benzylmethylene group which may have a substituent, a 1,1-dibenzylmethylene group which may have a substituent or a cycloalkane-1,1-diyl group having 3 to 6 carbon atoms which may have a substituent.Type: ApplicationFiled: May 16, 2006Publication date: April 16, 2009Applicant: Mitsui Chemicals, Inc.Inventors: Taizo Nishimoto, Eiichi Takahashi, Shunsuke Murayama, Yoshiaki Aso, Akira Ogiso, Akihiro Kohsaka, Takafumi Yoshida, Hiroyuki Sasaki, Kenichi Kato, Hiroshi Terao, Yojiro Kumagae