Patents by Inventor Junya Kanetake
Junya Kanetake 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: 10974030Abstract: A medical guide wire which can have both slidability and operability and can be easily manufactured is provided. A medical guide wire includes a long flexible wire body, and a wire-like material structure including a wire-like material arranged on the surface of the wire body, in which the wire-like material structure is thermally fused onto the wire body.Type: GrantFiled: October 11, 2017Date of Patent: April 13, 2021Assignee: GUNZE LIMITEDInventors: Junya Kanetake, Makoto Kawahara, Takashi Kuraoka
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Publication number: 20180056042Abstract: A medical guide wire which can have both slidability and operability and can be easily manufactured is provided. A medical guide wire includes a long flexible wire body, and a wire-like material structure including a wire-like material arranged on the surface of the wire body, in which the wire-like material structure is thermally fused onto the wire body.Type: ApplicationFiled: October 11, 2017Publication date: March 1, 2018Applicant: GUNZE LIMITEDInventors: Junya KANETAKE, Makoto KAWAHARA, Takashi KURAOKA
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Publication number: 20150306354Abstract: A medical guide wire which can have both slidability and operability and can be easily manufactured is provided. A medical guide wire (1) includes a long flexible wire body (2), and a wire-like material structure (3) including a wire-like material (31) arranged on the surface of the wire body (2), in which the wire-like material structure (3) is thermally fused onto the wire body (2).Type: ApplicationFiled: November 28, 2013Publication date: October 29, 2015Applicant: GUNZE LIMITEDInventors: Junya KANETAKE, Makoto KAWAHARA, Takashi KURAOKA
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Patent number: 8314204Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: GrantFiled: October 25, 2011Date of Patent: November 20, 2012Assignees: Gunze Limited, Ube Industries, Ltd.Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Publication number: 20120040121Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: ApplicationFiled: October 25, 2011Publication date: February 16, 2012Applicants: UBE INDUSTRIES, LTD., GUNZE LIMITEDInventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Patent number: 8097693Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: GrantFiled: October 8, 2004Date of Patent: January 17, 2012Assignees: Gunze Limited, UBE Industries, Ltd.Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Publication number: 20070178264Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.Type: ApplicationFiled: October 8, 2004Publication date: August 2, 2007Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
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Patent number: 6352750Abstract: The present invention provides an seamless tubular electrically-semiconductive film excellent in heat resistance, chemical resistance and mechanical property with excellent electrical resistance properties being applied thereto. The seamless tubular electrically-semiconductive film comprises carbon black having a volatile content of 10-25% which consists mainly of volatile acidic ingredients having a pH of not more than 4. Combination of the polyimide having a Tg of 210-350° C. and a surface oxidation-treated carbon black is preferred since the combination enables to easily obtain the film wherein a surface resistivity/volume resistivity ratio is not more than two digits, and variation in the surface resistivity caused by an applied voltage for charging is nor more than half a digit. The film is produced, for example, by centrifugal casting. The film is remarkly advantageous as an intermediate transfer belt in a color copying machine.Type: GrantFiled: August 14, 2000Date of Patent: March 5, 2002Assignee: Gunze LimitedInventor: Junya Kanetake
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Patent number: 6303054Abstract: The present invention provides an electrically-semiconductive poly(amic acid) liquid composition and a use thereof. An electrically-semiconductive poly(amic acid) (polyimide precursor) liquid composition whose electrical semiconductivity is applied by comprising an electrically-conductive carbon black. Change in an electrical resistivity of the liquid composition after being stored for 180 days at a temperature of 23° C. and in an atmosphere of a RH of 65% is 7% or less based on the electrical resistivity immediately after the preparation of the liquid composition. The electrically-semiconductive poly(amic acid) liquid composition is obtainable by mixing 5-40 parts by weight of a poly(amic acid), 95-60 parts by weight of an organic polar solvent and 10-40% by weight based on the poly(amic acid) of an electrically-conductive carbon black having a volatile content of 5-20%, a specific surface area of 100-300 m2/g and a pH of 2-4.Type: GrantFiled: August 14, 2000Date of Patent: October 16, 2001Assignee: Gunze LimitedInventors: Junya Kanetake, Tsutomu Yoshida, Naoki Nishiura, Tsuneo Miyamoto, Takashi Kuraoka
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Patent number: 6217963Abstract: A seamless tubular composite film wherein a seamless tubular film comprising fluororesin with a film thickness of 5-20 &mgr;m stretched 2-10% in circumferential direction is fitted on the outside of a seamless tubular film comprising a thermosetting polyimide resin, or the precursor polyamic acid and heated at 200-400° C. for anchorage. In addition, in order to give thermal conductivity and antistatic properties leading to inhibition reduction of heating time and inhibition of adhesion of dirt, boron nitride and compatible thermal conductive agents may be dispersed in the polyimide resin, and carbon black and like electric conductive agent may be dispersed in fluororesin. The film is useful as toner fusing member, such as in electrophotographic copying machines and in laser printing.Type: GrantFiled: April 22, 1998Date of Patent: April 17, 2001Assignee: Gunze LimitedInventors: Tsuneo Miyamoto, Junya Kanetake, Naoki Nishiura, Nobuaki Kobayashi, Takashi Kuraoka
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Patent number: 6001440Abstract: The present invention relates to a heat-conductive polyimide film comprising a heat-conductive powder dispersed therein with a concentration gradient. The film can be produced, for example, by centrifugal casting. The film can be used as an excellent component or member in those fields in which heat conductivity is required in addition to mechanical characteristics, heat resistance and chemical resistance. For example, it is used as a thermal fixation member in a laser printer.Type: GrantFiled: October 22, 1997Date of Patent: December 14, 1999Assignee: Gunze LimitedInventors: Tsuneo Miyamoto, Takashi Kuraoka, Junya Kanetake, Naoki Nishiura, Nobuaki Kobayashi, Tetsuo Sadamitsu
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Patent number: 5389412Abstract: A tubular thermoplastic polyimide film manufactured by melt-extruding a novel kind of thermoplastic polyimide resin is provided. This film has a remarkably high dimensional accuracy, inclusive of the accuracy of film thickness, and is suitable for use in a variety of applications such as printer fixation belts.Type: GrantFiled: April 25, 1994Date of Patent: February 14, 1995Assignee: Gunze LimitedInventors: Akihiro Tanaka, Tatsuro Kitaura, Junya Kanetake, Tsutomu Yoshida, Satoru Wakinaka