Patents by Inventor Kei Saitoh

Kei Saitoh 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: 20100249342
    Abstract: A process for producing a polyphenylene sulfide resin with properties of (1) 0.3 wt % or less in the amount of the volatile gas generated when heated and melted at 320° C. in vacuum for 2 hours, (2) 0.3 wt % or less in the ash content achieved when incinerated at 550° C., (3) 4.0 wt % or less in the residue amount achieved when a solution with 1 part by weight of the polyphenylene sulfide resin dissolved in 20 parts by weight of 1-chloronaphthalene is pressure-filtered by a PTFE membrane filter with a pore size of 1 ?m at 250° C. for 5 minutes, and (4) higher than 500 g/10 min in melt flow rate (according to ASTM D-1238-70: measured at a temperature of 315.5° C. and at a load of 5000 g), by acid-treating a polyphenylene sulfide resin in an acid treatment step and subsequently treating it for thermal oxidation in a thermal oxidation step.
    Type: Application
    Filed: November 8, 2007
    Publication date: September 30, 2010
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Takeshi Unohara, Yoshiki Makabe, Naoya Nakamura, Kei Saitoh, Atsushi Ishio, Masahiro Inohara
  • Publication number: 20090306309
    Abstract: A process for producing a polyphenylene sulfide resin composition includes melt-kneading about 99 to about 60 wt % of a polyphenylene sulfide resin (a) and about 1 to about 40 wt % of a polyamide resin (b), and about 0.1 to 10 parts by weight of a compatibilizing agent (c) per 100 parts by weight in total of the polyphenylene sulfide resin (a) and the polyamide resin (b), using a double screw extruder with two or more kneading portions at a temperature of the range from a melting peak temperature of the polyphenylene sulfide resin+10° C. to a melting peak temperature of the polyphenylene sulfide resin+70° C., wherein the polyamide resin (b) is excluded nylon 46 and has a relative viscosity of 1.5 or more measuring in concentrated sulfuric acid at a concentration of 1% and at 25° C.
    Type: Application
    Filed: August 18, 2009
    Publication date: December 10, 2009
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Atsushi Ishio, Kei Saitoh, Sadayuki Kobayashi
  • Publication number: 20090201257
    Abstract: An image processing portion compares a preregistered fingerprint with a fingerprint sensed by a fingerprint-sensor-equipped key, and determines whether the fingerprints match with each other or not. When the fingerprints match with each other, a finger direction determining portion determines a direction of a finger from a displacement of the fingerprint. A main controller changes a direction of displayed contents of a display portion according to the direction of the finger determined by the finger direction determining portion. Therefore, a user can change the direction of the displayed contents of the display means by a simple operation.
    Type: Application
    Filed: February 8, 2006
    Publication date: August 13, 2009
    Inventors: Kei Saitoh, Tsutomu Iwata
  • Publication number: 20090041968
    Abstract: A polyphenylene sulfide resin composition including 100 parts by weight of a resin composition that consists of 99 to 60 wt % of a polyphenylene sulfide resin (a), and 1 to 40 wt % of at least one type of noncrystalline resin (b) selected from the group consisting of polyetherimide resin and polyether sulfone resin and 0.1 to 10 parts by weight of a compound (c) containing at least one group selected from epoxy group, amino group and isocyanate group, wherein the non-crystalline resin (b) forms an island phase and the number-average dispersed particle size of the noncrystalline resin (b) is 1,000 nm or less.
    Type: Application
    Filed: March 14, 2007
    Publication date: February 12, 2009
    Applicant: Toray Industries, Inc.
    Inventors: Kei Saitoh, Naoya Nakamura, Atsushi Ishio
  • Publication number: 20080139782
    Abstract: A polyphenylene sulfide resin treated by thermal oxidation has a generated gas amount of 0.23 wt % or less when the resin is heated and melted in vacuum at 320° C. for 2 hours; a residual amount of 3.0 wt % or less as a residue when the resin is dissolved in an amount corresponding to 20 times the weight of the resin, of 1-chloronaphthalene at 250° C. for 5 minutes and, as the 1-chloronaphthalene solution, pressure-filtered in a still hot state by a PTFE membrane filter with a pore size of 1 ?m or less; and a melt flow rate (measured at a temperature of 315.5° C. and at a load of 5000 g according to ASTM D-1238-70) of more than 100 g/10 min to 500 g/10 min.
    Type: Application
    Filed: November 22, 2005
    Publication date: June 12, 2008
    Applicant: Toray Industries, Inc.
    Inventors: Kei Saitoh, Atsushi Ishio, Takeshi Unohara
  • Publication number: 20070265375
    Abstract: A polyphenylene sulfide resin composition including 99 to 60 wt % of a polyphenylene sulfide resin (a) and 1 to 40 wt % of a polyamide resin (b), wherein the polyphenylene sulfide resin (a) forms a sea phase while the polyamide resin (b) forms an island phase, and that the number average dispersed particle size of the polyamide resin (b) is less than 500 nm; and a polyphenylene sulfide resin composition, wherein a compound having one or more types of groups selected from epoxy group, amino group and isocyanate group is added by 0.1 to 10 parts by weight per 100 parts by weight in total of the polyphenylene sulfide resin (a) and the polyamide resin (b), as a compatibilizing agent (c).
    Type: Application
    Filed: July 8, 2005
    Publication date: November 15, 2007
    Inventors: Atsushi Ishio, Kei Saitoh, Sadayuki Kobayashi
  • Publication number: 20070226501
    Abstract: There are provided a non-contact type semiconductor device, a mobile terminal device, and a communication system capable of suppressing unauthorized read, thereby assuring security. The non-contact type semiconductor device records information for identifying a read device of a communication destination and a request from a read device in a recording area. Moreover, the non-contact type semiconductor device holds authentication information and access authority, requests the read device to send authentication information, correlates the authentication information with the authentication information and access authority held, and executes the request from the read device according to the correlation result. Furthermore, by performing mutual communication by using the read device, the non-contact type semiconductor device, and a mobile terminal device using the non-contact type semiconductor device, it is possible to suppress unauthorized read, thereby assuring security.
    Type: Application
    Filed: December 20, 2005
    Publication date: September 27, 2007
    Inventor: Kei Saitoh
  • Patent number: 7115704
    Abstract: This invention provides a method for producing a polyarylene sulfide, comprising the step of bringing a low-hydrated alkali metal sulfide containing respectively 0.05 to less than 0.8 mole of water and an organic amide solvent per mole of the sulfur contained in the alkali metal sulfide, into contact with a dihalogenated aromatic compound in an organic polar solvent for polymerization. This invention also provides a polyarylene sulfide obtained by the method. The problem to be solved by this invention is to provide a method for efficiently producing a polyarylene sulfide in a short time using an alkali metal sulfide small in water content and organic amide solvent content.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: October 3, 2006
    Assignee: TORAY Industries, Inc.
    Inventors: Shunsuke Horiuchi, Atsushi Ishio, Kei Saitoh
  • Publication number: 20050171715
    Abstract: A data use limitation setting method is arranged so as to include a data receiving step of receiving from a user terminal device, (A) content data and (B) user authentication data corresponding to the content data; an authentication judging step of judging in accordance with the user authentication data, success or failure of authentication; and a data use limitation setting step of, if the success of the authentication is judged in the judgment, setting on the content data, a data use limitation for limiting use of the content data. With this, it is possible to widely provide as a system for limiting the use of content data, a highly reliable system that is not easily subjected to unauthorized analysis.
    Type: Application
    Filed: December 4, 2002
    Publication date: August 4, 2005
    Inventors: Kei Saitoh, Mitsuru Minakuchi, Osamu Tsumori, Tetsuya Matsuyama
  • Publication number: 20050043505
    Abstract: This invention provides a method for producing a polyarylene sulfide, comprising the step of bringing a low-hydrated alkali metal sulfide containing respectively 0.05 to less than 0.8 mole of water and an organic amide solvent per mole of the sulfur contained in the alkali metal sulfide, into contact with a dihalogenated aromatic compound in an organic polar solvent for polymerization. This invention also provides a polyarylene sulfide obtained by the method. The problem to be solved by this invention is to provide a method for efficiently producing a polyarylene sulfide in a short time using an alkali metal sulfide small in water content and organic amide solvent content.
    Type: Application
    Filed: July 23, 2004
    Publication date: February 24, 2005
    Inventors: Shunsuke Horiuchi, Atsushi Ishio, Kei Saitoh