Patents by Inventor Hiroshi Imafuku
Hiroshi Imafuku 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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Publication number: 20060097514Abstract: An object identification structure for generally distributed products is provided which is extremely hard to forge, high in identifiability, and can be manufactured inexpensively. The object identification structure comprises a single layer cholesteric liquid crystal film which is substantially colorless and transparent when viewed from the front and appears colored when viewed from a predetermined oblique direction.Type: ApplicationFiled: December 22, 2005Publication date: May 11, 2006Inventors: Suzushi Nishimura, Takashi Seki, Hiroshi Imafuku
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Patent number: 6816298Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compounds, which has both a structure exhibiting a cathodic electrochromic characteristic and a structure exhibiting an anodic electrochromic characteristic.Type: GrantFiled: February 10, 2003Date of Patent: November 9, 2004Assignee: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
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Patent number: 6657768Abstract: The electrochromic devices have an ion conductive layer formed by curing a composition comprising a bipyridinium compound represented by the formula a specific metallocene compound and a precursor of a polymeric solid electrolyte, between two electrically conductive substrates, at least one of which is transparent.Type: GrantFiled: May 3, 2002Date of Patent: December 2, 2003Assignee: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Masaaki Kobayashi, Hiroshi Imafuku
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Publication number: 20030184839Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compounds, which has both a structure exhibiting a cathodic electrochromic characteristic and a structure exhibiting an anodic electrochromic characteristic.Type: ApplicationFiled: February 10, 2003Publication date: October 2, 2003Applicant: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
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Patent number: 6519072Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compound, which has both a structure exhibiting a cathodic electorchromic characteristic and a structure exhibiting an anodic electrochromic characteristic.Type: GrantFiled: August 16, 2001Date of Patent: February 11, 2003Assignee: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
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Patent number: 6514431Abstract: An ion conductive material comprising a mixture of a solvent, a supporting electrolyte, and an ultraviolet absorber and alternatively a polymerizable monomer and having an ion conductivity at 25° C. of 1×10−7 or greater; the ultraviolet absorber being contained in the ion conductive material in such an amount that the transmissivity of electromagnetic rays having a wavelength from 300 to 360 nm and transmitting through an layer of the ion conductive material of 0.2 mm in thickness can be maintained 0.1% or below. The ion conductive material is suitable for use in various electrochromic devices.Type: GrantFiled: October 13, 2000Date of Patent: February 4, 2003Assignee: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Hiroshi Imafuku, Shinji Ohshima
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Publication number: 20020136898Abstract: The electrochromic devices have an ion conductive layer formed by curing a composition comprising a bipyridinium compound represented by the formula 1Type: ApplicationFiled: May 3, 2002Publication date: September 26, 2002Applicant: NIPPON MITSUBISHI OIL CORPORATIONInventors: Yoshinori Nishikitani, Masaaki Kobayashi, Hiroshi Imafuku
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Publication number: 20020015214Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compound, which has both a structure exhibiting a cathodic electorchromic characteristic and a structure exhibiting an anodic electrochromic characteristic.Type: ApplicationFiled: August 16, 2001Publication date: February 7, 2002Applicant: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
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Patent number: 6208452Abstract: The electrochromic device which has an ion conductive layer obtained by curing a composition comprising (a) a bipyridinium compound represented by formula (1), (b) a specific amine compound and (c) a precursor component of a polymeric solid electrolyte, disposed between two electrically conductive substrates at least one of which is transparent, said formula (1) being wherein X— and Y— are the same or different and are each independently a counter anion selected from the group consisting of an halogen anion, ClO4—, BF4—, PF6—, CH3COO— and CH3(C6H4)SO3—, R1 is hydrogen or a C1-C5 alkyl group, R2 is a C1-C30 divalent hydrocarbon or oxygen-containing hydrocarbon group, R3 is a C1-C20 hydrocarbon or oxygen-containing hydrocarbon group and a is an integer of 0 or 1.Type: GrantFiled: October 22, 1999Date of Patent: March 27, 2001Assignee: Nippon Mitsubishi Oil CorporationInventors: Yoshinori Nishikitani, Izuru Sugiura, Masaaki Kobayashi, Hiroshi Imafuku
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Patent number: 4271001Abstract: Vesicles are suspended in a lipophilic ion solution and the lipophilic ion concentration is changed by the permeation of the lipophilic ions into the vesicles. An electrode selectively responsive to the lipophilic ions is immersed in the suspension to detect the time-change rate of the electrode potential, thereby to obtain a change in the lipophilic ion concentration with respect to time, from which are measured membrane characteristics of the vesicles, such as the permeability of a vesicular membrane to the lipophilic ions.Type: GrantFiled: March 15, 1979Date of Patent: June 2, 1981Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Hiroshi Imafuku, Takeo Kimura, Hidehiko Kobayashi