Patents by Inventor Mayumi Yoshida
Mayumi Yoshida 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: 20150064692Abstract: A problem to be solved by the present invention is to provide an immunochromatographic test strip and a detection method using immunochromatography avoiding aggregation of colloidal gold conjugates while red blood cells in whole blood are agglutinated and then separated and removed in the case of using polybrene as a blood-agglutinating agent and the colloidal gold conjugates as a detection reagent. To solve the problem, the present inventers reviewed a past reagent configuration itself from a completely different viewpoint rather than selecting type and amount of polyanions and, as a result of extensive study on each element, the inventers surprisingly found that aggregation of colloidal gold can be suppressed by using a certain buffer solution without using neutralization by polyanions.Type: ApplicationFiled: April 1, 2013Publication date: March 5, 2015Applicant: SEKISUI MEDICAL CO., LTD.Inventors: Mayumi Yoshida, Mitsuaki Yamamoto, Shinya Yokokawa, Tomo Shimizu, Keigo Kono
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Patent number: 8846052Abstract: A bacterial toxin protein such as a Shiga toxin protein is efficiently produced using plant cells. The plant cells are transformed using a DNA construct containing DNA encoding a hybrid protein in which the bacterial toxin proteins such as the Shiga toxin proteins are tandemly linked through a peptide having the following characteristics (A) and (B) to produce the bacterial toxin protein in the plant cells: (A) a number of amino acids is 12 to 30; and (B) a content of proline is 20 to 35%.Type: GrantFiled: April 28, 2009Date of Patent: September 30, 2014Assignees: Idemitsu Kosan Co., Ltd., National University Corporation Nara Institute of Science and TechnologyInventors: Kazutoshi Sawada, Takeshi Matsui, Mayumi Yoshida, Nobuo Yoshida, Kyoko Yoshida
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Publication number: 20110231960Abstract: A bacterial toxin protein such as a Shiga toxin protein is efficiently produced using plant cells. The plant cells are transformed using a DNA construct containing DNA encoding a hybrid protein in which the bacterial toxin proteins such as the Shiga toxin proteins are tandemly linked through a peptide having the following characteristics (A) and (B) to produce the bacterial toxin protein in the plant cells: (A) a number of amino acids is 12 to 30; and (B) a content of proline is 20 to 35%.Type: ApplicationFiled: April 28, 2009Publication date: September 22, 2011Applicants: Idemitsu Kosan Co., Ltd., National University Co., Nara Ins. of Sci. & TechInventors: Kazutoshi Sawada, Kazuya Yoshida, Mayumi Yoshida, Nobuo Yoshida, Kyoko Yoshida, Takeshi Matsui
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Publication number: 20110002950Abstract: A technology for producing a pig edema disease vaccine at low cost and at high efficiency is developed. Specifically, a gene of a pig edema disease toxin protein (Stx2e protein) is efficiently expressed in plant cells to produce a plant vaccine for pig edema disease at low cost. An Stx2e protein including a secretory signal peptide derived from a plant added at an amino terminus is expressed in cells of a plant such as Lactuca sativa using the 5?-untranslated region of an alcohol dehydrogenase gene (ADH5?UTR) derived from a plant.Type: ApplicationFiled: March 25, 2008Publication date: January 6, 2011Applicants: IDEMITSU KOSAN CO., LTD, NAT. UNI. CORP. NARA INSTITUTE OF SCI. AND TECH., NAT UNI CORP OBIHIRO UNI OF AGRI AND VET MEDInventors: Kazutoshi Sawada, Kazuya Yoshida, Mayumi Yoshida, Nobuo Yoshida, Kyoko Yoshida, Takeshi Matsui, Sou-ichi Makino, Keiko Kawamoto
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Patent number: 7112571Abstract: Peptide which is obtained by treating fish meat such as sardine with an alkaline protease is adsorbed with a peptide-adsorbing resin (such as ODS resin) and eluted with 10 aqueous ethanol to obtain a peptide (Y-2 fraction). The resulting novel peptide has an excellent hypotensive action and can be used as a nutrient and a specific health food and, in addition, it can be advantageously used as a hypotensive agent.Type: GrantFiled: October 9, 2002Date of Patent: September 26, 2006Assignee: Senmi Ekisu Co., Ltd.Inventors: Katsuhiro Osajima, Eiji Seki, Mayumi Yoshida
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Patent number: 6642355Abstract: The invention relates to an endothelin antagonistic peptide of the formula (I): X-A-Trp-B-Gly-Thr-E-G-Y (I) SEQ ID NO: 2 wherein represents Asn or Asp; B represents His or Lys; E represents Ala or Ser; G represents Ala or Pro; X represents X1-Gly or and Y represents hydroxy, lower alkoxy, amino, wherein X1, X3, Y1, Y2 and Z are further defined, or a pharmaceutically acceptable salt thereof.Type: GrantFiled: January 2, 2001Date of Patent: November 4, 2003Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Takeo Tanaka, Yoshikazu Morishita, Mika Makino, Shigeru Chiba, Isao Kawamoto, Eiji Tsukuda, Mayumi Yoshida, Chieko Bando, Kazuo Yamaguchi, Yuzuru Matsuda, Shigeto Kitamura, Toshihide Ikemura, Tatsuhiro Ogawa, Keiichi Yano, Toshiyuki Suzawa, Kenji Shibata, Motoo Yamasaki
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Publication number: 20030148923Abstract: Peptide which is obtained by treating fish meat such as sardine with an alkaline protease is adsorbed with a peptide-adsorbing resin (such as ODS resin) and is eluted with a 10% aqueous ethanol to obtain a peptide (Y-2 fraction).Type: ApplicationFiled: October 9, 2002Publication date: August 7, 2003Applicant: Senmi Ekisu Co., Ltd.Inventors: Katsuhiro Osajima, Eiji Seki, Mayumi Yoshida
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Publication number: 20030055213Abstract: Disclosed in a peptide represented by the following formula (I):Type: ApplicationFiled: January 2, 2001Publication date: March 20, 2003Inventors: Takeo Tanaka, Yoshikazu Morishita, Mika Makino, Shigeru Chiba, Isao Kawamoto, Eiji Tsukuda, Mayumi Yoshida, Chieko Bando, Kazuo Yamaguchi, Yuzuru Matsuda, Shigeto Kitamura, Toshihide Ikemura, Tatsuhiro Ogawa, Keiichi Yano, Toshiyuki Suzawa, Kenji Shibata, Motoo Yamasaki
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Patent number: 6228784Abstract: There is disclosed a heat resistant cloth for fire fighting. At least an inner surface of a fluororesin film is subjected to plasma discharge treatment to form a treated surface. A vacuum-deposition film made of a bright metal such as aluminum is formed on the treated surface of the fluororesin film without use of a primer. The vacuum-deposition film on the treated surface is bonded to an outer surface of a substrate fabric through use of a silicone rubber adhesive in order to form a heat-reflecting layer on the outer surface of the substrate fabric. Since no primer coating layer is used, the heat reflecting layer can prevent a decrease in brightness, which would otherwise occur due to cracks generated in the primer coating layer. Thus, a decrease in heat reflectivity at high temperature is prevented. Since no flammable synthetic resin layer is used at the surface of the heat reflecting layer, flame resistance can be improved.Type: GrantFiled: July 27, 1998Date of Patent: May 8, 2001Assignees: Toyo Metallizing Kabushiki Kaisha, Kobayashi Bokafuku Kabushiki KaishaInventors: Masayuki Mochizuki, Mayumi Yoshida, Torataro Kobayashi, Kanjiro Kobayashi, Jutaro Kobayashi
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Patent number: 6194195Abstract: The invention relates to biologically pure cultures of Streptomyces sp. RE-701 (FERM BP-3624) and Streptomyces sp. RE-629 (FERM BP-4126) that produce endothelin antagonistic peptides.Type: GrantFiled: October 27, 1998Date of Patent: February 27, 2001Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Takeo Tanaka, Yoshikazu Morishita, Mika Makino, Shigeru Chiba, Isao Kawamoto, Eiji Tsukuda, Mayumi Yoshida, Chieko Bando, Kazuo Yamaguchi, Yuzuru Matsuda, Shigeto Kitamura, Toshihide Ikemura, Tatsuhiro Ogawa, Keiichi Yano, Toshiyuki Suzawa, Kenji Shibata, Motoo Yamasaki
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Patent number: 6064470Abstract: A contact type image transferring device and method incorporated in an image forming apparatus for cleaning a residual toner on a transfer roller. The transfer roller is in contact with a photoconductive drum at a first force and forms nip between the roller and the drum. A sheet of paper passes through the nip and a toner image on the drum is transferred to the sheet of paper. When the sheet of paper is not at the nip, the transfer roller is moved such that the force of the roller against the drum is a second force which is different from the first force. A cleaning bias voltage is applied to the roller and toner on the roller is transferred to the drum.Type: GrantFiled: October 2, 1995Date of Patent: May 16, 2000Assignee: Ricoh Company, Ltd.Inventors: Kenji Karashima, Hisashi Fuzisaki, Mayumi Yoshida
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Patent number: 5887224Abstract: There is provided an image forming device capable of preventing smudges on the background of an image due to excess toner replenishment caused by a failure in stirring developer and toner enough to charge the toner or scattering of replenished toner without being charged. A toner conveying member for conveying replenished toner from a toner replenishing portion through a toner replenishing port to a developer stirring and conveying member is constructed by a screw member unitarily formed with the developer stirring and conveying member. The screw member has a spiral conveying fin capable of conveying the replenished toner at relatively high speed. The replenished toner is delivered to a toner replenishing portion provided in the upstream of a developer receiving portion of the screw member.Type: GrantFiled: May 23, 1997Date of Patent: March 23, 1999Assignee: Ricoh Company, Ltd.Inventors: Haruji Mizuishi, Masaru Tanaka, Shigeru Watanabe, Kenzo Tatsumi, Toshitaka Yamaguchi, Takeo Suda, Hiroshi Yoshinaga, Ken Amemiya, Mayumi Yoshida
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Patent number: 5857132Abstract: A contact type image transferring system and method, incorporated in an image forming apparatus, for cleaning a residual toner on a transfer roller. The transfer roller is in contact with a photoconductive drum and forms a nip between the roller and the drum. A sheet of paper passes through the nip and a toner image on the drum is transferred to the sheet of paper. When the sheet of paper is not at the nip, not only a transfer voltage but also a charging voltage is applied at a same time. The polarities of the voltages applied to the charger and to the transfer roller cause the toner on the transfer roller to be removed.Type: GrantFiled: September 29, 1997Date of Patent: January 5, 1999Assignee: Ricoh Company, Ltd.Inventors: Haruji Mizuishi, Hisashi Fuzisaki, Mayumi Yoshida, Kenji Karashima, Yasushi Akiba
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Patent number: 5843955Abstract: The present invention relates to compound LK6-A represented by the formula: ##STR1## which has immunosuppressive activity, and pharmaceutically acceptable salts thereof.Type: GrantFiled: September 30, 1996Date of Patent: December 1, 1998Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Tatsuya Tamaoki, Hiroyuki Nagata, Isami Takahashi, Mayumi Yoshida, Yumiko Aotani, Katsuhiko Ando, Keiko Ochiai
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Patent number: 5737680Abstract: An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.Type: GrantFiled: November 19, 1996Date of Patent: April 7, 1998Assignee: Ricoh Company, Ltd.Inventors: Hiromitsu Takagaki, Shinji Kato, Hisao Murayama, Shigeru Watanabe, Mayumi Yoshida, Shunji Kato
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Patent number: 5686485Abstract: The present invention relates to EI-1941 compounds having interleukin-1 production inhibitory activity which are represented by the formula: ##STR1## wherein either of R.sup.1 and R.sup.2 is hydrogen and the other is hydroxy, or R.sup.1 and R.sup.2 together represent oxygen; and R.sup.3 is hydroxy and R.sup.4 is hydrogen, or R.sup.3 and R.sup.4 together represent --0--.Type: GrantFiled: October 9, 1996Date of Patent: November 11, 1997Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Takeo Tanaka, Hidemasa Kondo, Fumito Koizumi, Hiroki Ishiguro, Mayumi Yoshida, Katsuhiko Ando, Yuzuru Matsuda
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Patent number: 5639860Abstract: Peptides represented by the following formula (I): ##STR1## wherein A represents Asn or Asp; B represents His or Lys; and E represents Ala or Ser;(1) X.sup.1 and Y.sup.1 are combined together to form a single bond as X.sup.1 --Y1, or (2) X.sup.1 represents hydrogen and Y.sup.1 represents hydroxy;and Z represents, in case of (1),Trp-Phe-Phe-Asn-Tyr-Tyr-7Hyt-Z.sup.1Trp-Val-Tyr-Phe-Ala-His-Leu-Asp-Ile-Ile-Trp-Z.sup.1,Trp-Val-Tyr-Tyr-Ala-His-Leu-Asp-Ile-Ile-Trp-Z.sup.1,Trp-Leu-Tyr-Phe-Ala-His-Gln-Asp-Val-Ile-Trp-Z.sup.1,Trp-Phe-Phe-Asn-Tyr-R-T-Z.sup.1wherein Z.sup.1 is an organic moiety,wherein R is Tyr or a covalent bond,T is Trp, Ala, Phe, Tyr, Trp-Trp, Asn-Tyr-Tyr-Trp, Trp-Asn-Tyr-Tyr-Trp, Trp-Val-Tyr-Phe-Ala-His-Leu-Asp-Ile-Ile-Trp,or in case of (2), Z representsTrp-Val-Tyr-Phe-Ala-His-Leu-Asp-Ile-Ile-Trp-Z.sup.1Trp-Val-Tyr-Tyr-Ala-His-Leu-Asp-Ile-Ile-Trp-Z.sup.1Trp-Leu-Tyr-Phe-Ala-His-Gln-Asp-Val-Ile-Trp-Z.sup.1.Type: GrantFiled: October 12, 1994Date of Patent: June 17, 1997Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Takeo Tanaka, Yoshikazu Morishita, Mika Makino, Shigeru Chiba, Isao Kawamoto, Eiji Tsukuda, Mayumi Yoshida, Chieko Bando, Kazuo Yamaguchi, Yuzuru Matsuda, Shigeto Kitamura, Toshihide Ikemura, Tatsuhiro Ogawa, Keiichi Yano, Toshiyuki Suzawa, Kenji Shibata, Motoo Yamasaki
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Patent number: 5604575Abstract: An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.Type: GrantFiled: May 15, 1995Date of Patent: February 18, 1997Assignee: Ricoh Company, Ltd.Inventors: Hiromitsu Takagaki, Shinji Kato, Hisao Murayama, Shigeru Watanabe, Mayumi Yoshida, Shunji Kato
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Patent number: 5493382Abstract: An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.Type: GrantFiled: April 8, 1993Date of Patent: February 20, 1996Assignee: Ricoh Company, Ltd.Inventors: Hiromitsu Takagaki, Shinji Kato, Hisao Murayama, Shigeru Watanabe, Mayumi Yoshida, Shunji Kato
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Patent number: 5276177Abstract: A novel physiologically active substance is represented by the formula. ##STR1## The substance is preferably derived from propolis, has excellent antitumor activity and is useful as an antitumor drug.Type: GrantFiled: June 17, 1992Date of Patent: January 4, 1994Assignees: Tetsuya Matsuno, MPI LimitedInventors: Mayumi Yoshida, Yutaka Saito, Tetsuya Matsuno