Patents by Inventor Keisuke Kii
Keisuke Kii 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: 9533475Abstract: The method for producing a battery, includes the steps of: laminating electrodes on the crosslinking polymer-supported porous film to prepare a laminate of crosslinking polymer-supported porous film/electrodes; placing the laminate in a battery container; and pouring an electrolyte solution containing a cation polymerization catalyst in the battery container to induce cation polymerization and crosslinking of the crosslinking polymer, thereby at least partially gelling the electrolyte solution to adhere the porous film and the electrodes.Type: GrantFiled: July 20, 2012Date of Patent: January 3, 2017Assignee: NITTO DENKO CORPORATIONInventors: Yoshihiro Uetani, Keisuke Kii, Satoshi Nishikawa
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Patent number: 8911648Abstract: A reactive polymer-supported porous film for separator, that has sufficient adhesiveness between electrodes and separator and can suitably be used to produce a battery having low internal resistance and high rate performance, a method for producing the porous film, a method for producing a battery using the porous film, and an electrode/porous film assembly are disclosed. The reactive polymer-supported porous film for battery separator includes a porous film substrate having supported thereon a reactive polymer obtained by reacting a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule, with an acid anhydride, thereby partially crosslinking the polymer.Type: GrantFiled: September 12, 2012Date of Patent: December 16, 2014Assignee: Nitto Denko CorporationInventors: Yoshihiro Uetani, Keisuke Kii, Tomoaki Ichikawa, Michio Satsuma, Satoshi Nishikawa, Shinji Bessho
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Patent number: 8357260Abstract: A partially crosslinked adhesive-supported porous film for battery separator, which in producing a battery, can effectively produce a battery as an electrode/separator laminate in which an electrode and a separator are temporarily bonded to each other without causing mutual slip movement between the electrode and the separator and which after producing a battery, functions itself as a separator having a small heat shrinkage factor even at high temperatures, and a process of producing a battery using such a partially crosslinked adhesive-supported porous film.Type: GrantFiled: August 26, 2011Date of Patent: January 22, 2013Assignee: Nitto Denko CorporationInventors: Keisuke Kii, Michio Satsuma, Yoshihiro Uetani, Mutsuko Yamaguchi, Yutaka Kishii, Shuuhei Murata, Tomoaki Ichikawa
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Patent number: 8349031Abstract: The invention provides a battery separator comprising a porous resin film and a crosslinked polymer supported thereon and having iminodiacetic acid groups in side chains of the polymer chains. The iminodiacetic acid group is preferably represented by the formula wherein M1 and M2 are each independently a hydrogen atom, a lithium atom, a potassium atom, a sodium atom, or triethylamine. It is preferred that the layer of the crosslinked polymer is substantially nonporous or solid, and ion conductive, and that the crosslinked polymer has in the molecule oxetanyl groups which are capable of cation polymerization.Type: GrantFiled: September 10, 2008Date of Patent: January 8, 2013Assignee: Nitto Denko CorporationInventors: Hiroyoshi Take, Shunsuke Noumi, Sadahiro Nakanishi, Yoshihiro Uetani, Keisuke Kii, Kinkou Sho
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Publication number: 20130004654Abstract: A reactive polymer-supported porous film for separator, that has sufficient adhesiveness between electrodes and separator and can suitably be used to produce a battery having low internal resistance and high rate performance, a method for producing the porous film, a method for producing a battery using the porous film, and an electrode/porous film assembly are disclosed. The reactive polymer-supported porous film for battery separator includes a porous film substrate having supported thereon a reactive polymer obtained by reacting a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule, with an acid anhydride, thereby partially crosslinking the polymer.Type: ApplicationFiled: September 12, 2012Publication date: January 3, 2013Applicant: NITTO DENKO CORPORATIONInventors: Yoshihiro Uetani, Keisuke Kii, Tomoaki Ichikawa, Michio Satsuma, Satoshi Nishikawa, Shinji Bessho
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Publication number: 20120297612Abstract: The method for producing a battery, includes the steps of: laminating electrodes on the crosslinking polymer-supported porous film to prepare a laminate of crosslinking polymer-supported porous film/electrodes; placing the laminate in a battery container; and pouring an electrolyte solution containing a cation polymerization catalyst in the battery container to induce cation polymerization and crosslinking of the crosslinking polymer, thereby at least partially gelling the electrolyte solution to adhere the porous film and the electrodes.Type: ApplicationFiled: July 20, 2012Publication date: November 29, 2012Applicant: NITTO DENKO CORPORATIONInventors: Yoshihiro UETANI, Keisuke KII, Satoshi NISHIKAWA
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Patent number: 8277968Abstract: Provided is a reactive polymer-supporting porous film for use as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film, the partially crosslinked reactive polymer being obtained by the reaction of a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule with a monocarboxylic acid. Further, provided is a method of manufacturing a battery which comprises layering electrodes on the reactive polymer-supporting porous film.Type: GrantFiled: January 10, 2006Date of Patent: October 2, 2012Assignees: Nitto Denko Corporation, Sunstar Giken Kabushiki KaishaInventors: Tomoaki Ichikawa, Yoshihiro Uetani, Shigeru Fujita, Keisuke Kii, Satoshi Nishikawa, Shinji Bessyo
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Patent number: 8277897Abstract: A reactive polymer-supporting porous film is provided as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film. The partially crosslinked reactive polymer is obtained by the reaction of a crosslinkable polymer having at least one group selected from the 3-oxetanyl group and epoxy group reactive with a polycarboxylic acid. The reactive polymer-supporting porous film has a separator and electrodes sufficiently bonded to each other and with low inner resistance suitably used for production of battery excellent in high rate performance. Further, provided is a method of producing a battery which comprises placing the electrode/reactive polymer-supporting porous film layered body in a battery container; introducing an electrolytic solution containing a cationic polymerization catalyst into the battery container thereby bonding the porous film and electrodes together.Type: GrantFiled: June 3, 2011Date of Patent: October 2, 2012Assignees: Nitto Denko Corporation, Sunstar Giken Kabushiki KaishaInventors: Yoshihiro Uetani, Keisuke Kii, Shigeru Fujita, Satoshi Nishikawa, Tatsuya Okuno
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Patent number: 8092935Abstract: A reactive polymer-supported porous film for a battery separator containing a substrate porous film of a porous film and a reactive polymer supported on the substrate porous film. The porous film has a temperature of 200° C. or more, at which a thickness of the porous film is reduced to ½ of a thickness when a probe is placed on the porous film. The reactive polymer is obtainable by partially crosslinking a crosslinkable polymer and a polyfunctional isocyanate. The crosslinkable polymer is obtainable by copolymerizing a crosslinkable monomer having in a molecule at least one reactive group selected from a 3-oxetanyl group and an epoxy group and a crosslinkable monomer having a reactive group capable of reacting with an isocyanate group.Type: GrantFiled: July 20, 2005Date of Patent: January 10, 2012Assignee: Nitto Denko CorporationInventors: Tomoaki Ichikawa, Kazushige Yamamoto, Yoshihiro Uetani, Keisuke Kii
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Publication number: 20110308727Abstract: A partially crosslinked adhesive-supported porous film for battery separator, which in producing a battery, can effectively produce a battery as an electrode/separator laminate in which an electrode and a separator are temporarily bonded to each other without causing mutual slip movement between the electrode and the separator and which after producing a battery, functions itself as a separator having a small heat shrinkage factor even at high temperatures, and a process of producing a battery using such a partially crosslinked adhesive-supported porous film.Type: ApplicationFiled: August 26, 2011Publication date: December 22, 2011Applicant: NITTO DENKO CORPORATIONInventors: Keisuke KII, Michio SATSUMA, Yoshihiro UETANI, Mutsuko YAMAGUCHI, Yutaka KISHII, Shuuhei MURATA, Tomoaki ICHIKAWA
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Patent number: 8062387Abstract: A reactive polymer-supporting porous film is provided as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film. The partially crosslinked reactive polymer is obtained by the reaction of a crosslinkable polymer having at least one group selected from the 3-oxetanyl group and epoxy group reactive with a polycarboxylic acid. The reactive polymer-supporting porous film has a separator and electrodes sufficiently bonded to each other and with low inner resistance suitably used for production of battery excellent in high rate performance. Further, provided is a method of producing a battery which comprises placing the electrode/reactive polymer-supporting porous film layered body in a battery container; introducing an electrolytic solution containing a cationic polymerization catalyst into the battery container thereby bonding the porous film and electrodes together.Type: GrantFiled: June 3, 2011Date of Patent: November 22, 2011Assignees: Nitto Denko Corporation, Sunstar Giken Kabushiki KaishaInventors: Yoshihiro Uetani, Keisuke Kii, Shigeru Fujita, Satoshi Nishikawa, Tatsuya Okuno
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Publication number: 20110232081Abstract: A reactive polymer-supporting porous film is provided as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film. The partially crosslinked reactive polymer is obtained by the reaction of a crosslinkable polymer having at least one group selected from the 3-oxetanyl group and epoxy group reactive with a polycarboxylic acid. The reactive polymer-supporting porous film has a separator and electrodes sufficiently bonded to each other and with low inner resistance suitably used for production of battery excellent in high rate performance. Further, provided is a method of producing a battery which comprises placing the electrode/reactive polymer-supporting porous film layered body in a battery container; introducing an electrolytic solution containing a cationic polymerization catalyst into the battery container thereby bonding the porous film and electrodes together.Type: ApplicationFiled: June 3, 2011Publication date: September 29, 2011Inventors: Yoshihiro Uetani, Keisuke Kii, Shigeru Fujita, Satoshi Nishikawa, Tatsuya Okuno
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Publication number: 20110232836Abstract: A reactive polymer-supporting porous film is provided as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film. The partially crosslinked reactive polymer is obtained by the reaction of a crosslinkable polymer having at least one group selected from the 3-oxetanyl group and epoxy group reactive with a polycarboxylic acid. The reactive polymer-supporting porous film has a separator and electrodes sufficiently bonded to each other and with low inner resistance suitably used for production of battery excellent in high rate performance. Further, provided is a method of producing a battery which comprises placing the electrode/reactive polymer-supporting porous film layered body in a battery container; introducing an electrolytic solution containing a cationic polymerization catalyst into the battery container thereby bonding the porous film and electrodes together.Type: ApplicationFiled: June 3, 2011Publication date: September 29, 2011Inventors: Yoshihiro Uetani, Keisuke Kii, Shigeru Fujita, Satoshi Nishikawa, Tatsuya Okuno
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Patent number: 7833654Abstract: The invention provides an adhesive-carrying porous film for use as a battery separator, comprising: a substrate porous film, wherein when a 1 mm diameter penetrating thermomechanical analyzer probe is placed on the film under a 70 g load to measure a thickness while heating the film from room temperature at a rate of 200° C./minute to a temperature where the film thickness decreases by half when the probe was initially placed is 200° C. or more, a partially crosslinked adhesive carried on the film, the adhesive is prepared by reacting a reactive polymer having a functional group capable of reacting with an isocyanate group with a polyfunctional isocyanate so the reactive polymer is partially crosslinked, a porous film is temporarily bonded to an electrode to provide an electrode/separator laminate, the porous film in a battery functions as a separator which does not melt or break with small heat shrinkage under high temperatures.Type: GrantFiled: April 1, 2004Date of Patent: November 16, 2010Assignee: Nitto Denko CorporationInventors: Tomoaki Ichikawa, Keisuke Kii, Yoshihiro Uetani, Kazushige Yamamoto, Michio Satsuma, Mutsuko Yamaguchi
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Publication number: 20100239900Abstract: The invention provides a battery separator comprising a porous resin film and a crosslinked polymer supported thereon and having iminodiacetic acid groups in side chains of the polymer chains. The iminodiacetic acid group is preferably represented by the formula wherein M1 and M2 are each independently a hydrogen atom, a lithium atom, a potassium atom, a sodium atom, or triethylamine. It is preferred that the layer of the crosslinked polymer is substantially nonporous or solid, and ion conductive, and that the crosslinked polymer has in the molecule oxetanyl groups which are capable of cation polymerization.Type: ApplicationFiled: September 10, 2008Publication date: September 23, 2010Inventors: Hiroyoshi Take, Shunsuke Noumi, Sadahiro Nakanishi, Yoshihiro Uetani, Keisuke Kii, Kinkou Sho
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Publication number: 20090202898Abstract: It is intended to provide a reactive polymer-supported porous film that is capable of achieving sufficient adhesion between the electrode and the separator; reduced in internal resistance; and excellent in high rate characteristics, the porous film being useful as a battery separator which, after production of the battery, is not melted or broken under a high temperature and functions as a separator having a small heat shrinkage ratio as well as to provide a process for producing batteries using the reactive polymer-supported porous film.Type: ApplicationFiled: July 20, 2005Publication date: August 13, 2009Applicant: NITTO DENKO CORPORATIONInventors: Tomoaki Ichikawa, Kazushige Yamamoto, Yoshihiro Uetani, Keisuke Kii
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Publication number: 20090098464Abstract: The invention provides a reactive polymer-supporting porous film for use as a battery separator which comprises a porous substrate film and a partially crosslinked reactive polymer supported on the porous substrate film, the partially crosslinked reactive polymer being obtained by the reaction of a crosslinkable polymer having at least one reactive group selected from the group consisting of 3-oxetanyl group and epoxy group in the molecule with a monocarboxylic acid.Type: ApplicationFiled: January 10, 2006Publication date: April 16, 2009Inventors: Tomoaki Ichikawa, Yoshihiro Uetani, Shigeru Fujita, Keisuke Kii, Satoshi Nishikawa, Shinji Bessyo
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Patent number: 7517615Abstract: A uniform gel electrolyte having high durability and use thereof, in particular, batteries or capacitors using such a gel electrolyte. The gel electrolyte includes a gel composition containing an electrolyte salt, a solvent for the electrolyte salt, and a polymer matrix, wherein the polymer matrix comprises a crosslinked polymer prepared by polymerizing a bifunctional (meth)acrylate represented by the following formula (I): wherein R represents a divalent organic group, and R1 represents a hydrogen atom or a methyl group.Type: GrantFiled: June 5, 2006Date of Patent: April 14, 2009Assignee: Nitto Denko CorporationInventors: Yoshihiro Uetani, Shuuhei Murata, Keisuke Kii
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Patent number: 7318984Abstract: An adhesive composition-supporting separator for a battery includes a porous substrate supporting thereon a thermally cross-linkable adhesive composition comprising a multi-functional isocyanate and a reactive polymer having a functional group capable of reacting with an isocyanato group of the multi-functional isocyanate; an electrode/separator laminate is obtained by contact pressing the adhesive composition-supporting separator for a battery against electrodes; and an electrode/separator bonded material having a cross-linked adhesive composition is obtained by heating the electrode/separator laminate to thereby react the multifunctional isocyanate with the reactive polymer for causing cross-linking.Type: GrantFiled: April 25, 2003Date of Patent: January 15, 2008Assignee: Nitto Denko CorporationInventors: Michio Satsuma, Keisuke Kii, Yoshihiro Uetani, Yutaka Kishii, Mutsuko Yamaguchi, Shuuhei Murata
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Publication number: 20070184340Abstract: The invention provides an adhesive-carrying porous film for use as a battery separator, which comprises: a substrate porous film such that when a probe of a probe penetrating thermomechanical analyzer, said probe having a diameter of 1 mm, is placed on the porous film under a load of 70 g to measure a thickness thereof while heating the porous film from room temperature at a rate of 2° C./minute, a temperature at which the thickness of the porous film decreases to a half of the thickness of the porous film when the probe was initially placed thereon is 200° C. or more; and a partially crosslinked adhesive carried on the substrate porous film, the partially crosslinked adhesive being prepared by reacting a reactive polymer having a functional group capable of reacting with an isocyanate group therein with a polyfunctional isocyanate so that the reactive polymer is partially crosslinked. Such a porous film (a separator) is temporarily bonded to an electrode to provide an electrode/separator laminate.Type: ApplicationFiled: April 1, 2004Publication date: August 9, 2007Inventors: Tomoaki Ichikawa, Keisuke Kii, Yoshihiro Uetani, Kazuhige Yamamoto, Michio Satsuma, Mutsuko Yamaguchi