Patents by Inventor Shitsuw Shikata
Shitsuw Shikata 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: 7297528Abstract: An alkaline protease having the following properties; a gene encoding the same; a microorganism producing the same; and washing compositions containing the same; (i) acting over a broad pH value range of 4 to 13 and achieving, at pH 6 to 12, 80% or more the activity at the optimum pH value; (ii) when treated at 40° C. for 30 minutes, being stable over a pH value range of 6 to 11; (iii) having an isoelectric point of about 8.9 to 9.1; and (iv) having casein digesting activity that is not inhibited by oleic acid. The alkaline protease of the present invention is highly stable to various surface active agents and fatty acids, and exhibits high stability to oxidizing agents, and is therefore useful as an enzyme to be used in detergents for automatic dishwashers and laundry detergents, both containing bleaching components.Type: GrantFiled: February 24, 2004Date of Patent: November 20, 2007Assignee: Kao CorporationInventors: Mikio Takaiwa, Mitsuyoshi Okuda, Katsuhisa Saeki, Hiromi Kubota, Jun Hitomi, Yasushi Kageyama, Shitsuw Shikata, Masafumi Nomura
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Publication number: 20040142837Abstract: An alkaline protease having the following properties; a gene encoding the same; a microorganism producing the same; and washing compositions containing the same; (i) acting over a broad pH value range of 4 to 13 and achieving, at pH 6 to 12, 80% or more the activity at the optimum pH value; (ii) when treated at 40° C. for 30 minutes, being stable over a pH value range of 6 to 11; (iii) having an isoelectric point of about 8.9 to 9.1; and (iv) having casein digesting activity that is not inhibited by oleic acid. The alkaline protease of the present invention is highly stable to various surface active agents and fatty acids, and exhibits high stability to oxidizing agents, and is therefore useful as an enzyme to be used in detergents for automatic dishwashers and laundry detergents, both containing bleaching components.Type: ApplicationFiled: February 24, 2004Publication date: July 22, 2004Applicant: Kao CorporationInventors: Mikio Takaiwa, Mitsuyoshi Okuda, Katsuhisa Saeki, Hiromi Kubota, Jun Hitomi, Yasushi Kageyama, Shitsuw Shikata, Masafumi Nomura
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Patent number: 6759228Abstract: An alkaline protease having the following properties; a gene encoding the same; a microorganism producing the same; and washing compositions containing the same; (i) acting over a broad pH value range of 4 to 13 and achieving, at pH 6 to 12, 80% or more the activity at the optimum pH value; (ii) when treated at 40° C. for 30 minutes, being stable over a pH value range of 6 to 11; (iii) having an isoelectric point of about 8.9 to 9.1; and (iv) having casein digesting activity that is not inhibited by oleic acid. The alkaline protease of the present invention is highly stable to various surface active agents and fatty acids, and exhibits high stability to oxidizing agents, and is therefore useful as an enzyme to be used in detergents for automatic dishwashers and laundry detergents, both containing bleaching components.Type: GrantFiled: August 3, 2001Date of Patent: July 6, 2004Assignee: Kao CorporationInventors: Mikio Takaiwa, Mitsuyoshi Okuda, Katsuhisa Saeki, Hiromi Kubota, Jun Hitomi, Yasushi Kageyama, Shitsuw Shikata, Masafumi Nomura
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Publication number: 20020064854Abstract: An alkaline protease having the following properties; a gene encoding the same; a microorganism producing the same; and washing compositions containing the same; (i) acting over a broad pH value range of 4 to 13 and achieving, at pH 6 to 12, 80% or more the activity at the optimum pH value; (ii) when treated at 40° C. for 30 minutes, being stable over a pH value range of 6 to 11; (iii) having an isoelectric point of about 8.9 to 9.1; and (iv) having casein digesting activity that is not inhibited by oleic acid. The alkaline protease of the present invention is highly stable to various surface active agents and fatty acids, and exhibits high stability to oxidizing agents, and is therefore useful as an enzyme to be used in detergents for automatic dishwashers and laundry detergents, both containing bleaching components.Type: ApplicationFiled: August 3, 2001Publication date: May 30, 2002Applicant: KAO CORPORATIONInventors: Mikio Takaiwa, Mitsuyoshi Okuda, Katsuhisa Saeki, Hiromi Kubota, Jun Hitomi, Yasushi Kageyama, Shitsuw Shikata, Masafumi Nomura
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Patent number: 6376227Abstract: An alkaline protease having the following properties; a gene encoding the same; a microorganism producing the same; and washing compositions containing the same; (i) acting over a broad pH value range of 4 to 13 and achieving, at pH 6 to 12, 80% or more the activity at the optimum pH value; (ii) when treated at 40° C. for 30 minutes, being stable over a pH value range of 6 to 11; (iii) having an isoelectric point of about 8.9 to 9.1; and (iv) having casein digesting activity that is not inhibited by oleic acid. The alkaline protease of the present invention is highly stable to various surface active agents and fatty acids, and exhibits high stability to oxidizing agents, and is therefore useful as an enzyme to be used in detergents for automatic dishwashers and laundry detergents, both containing bleaching components.Type: GrantFiled: April 6, 2000Date of Patent: April 23, 2002Assignee: Kao CorporationInventors: Mikio Takaiwa, Mitsuyoshi Okuda, Katsuhisa Saeki, Hiromi Kubota, Jun Hitomi, Yasushi Kageyama, Shitsuw Shikata, Masafumi Nomura
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Patent number: 6372704Abstract: The present invention provides a detergent composition which is excellent in enzyme stability and exhibits excellent detergency particularly to protein-related dirt of socks and other items even under laundering conditions at a lower temperature. That is, the present invention provides a detergent composition comprising specific proportions of (a) an anionic surfactant, (b) a chlorine scavenger, (c) a protease whose &agr;-keratin-hydrolyzing activity at 10° C. is not less than 0.09×10−3 &mgr;g/mPU·min and (d) a protease whose &agr;-keratin-hydrolyzing activity at 10° C. is less than 0.09×10−3 &mgr;g/mPU·min.Type: GrantFiled: December 12, 2000Date of Patent: April 16, 2002Assignee: Kao CorporationInventors: Shitsuw Shikata, Masafumi Nomura, Toshihiro Oki, Hitoshi Tanimoto, Tsutomu Tokumoto, Nobuyuki Ogura
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Publication number: 20010000509Abstract: The present invention provides a detergent composition which is excellent in enzyme stability and exhibits excellent detergency particularly to protein-related dirt of socks and other items even under laundering conditions at a lower temperature. That is, the present invention provides a detergent composition comprising specific proportions of (a) an anionic surfactant, (b) a chlorine scavenger, (c) a protease whose &agr;-keratin-hydrolyzing activity at 10° C. is not less than 0.09×10−3 &mgr;g/mPU·min and (d) a protease whose &agr;-keratin-hydrolyzing activity at 10° C. is less than 0.09×10−3 &mgr;g/mPU·min.Type: ApplicationFiled: December 12, 2000Publication date: April 26, 2001Applicant: Kao Corporation.Inventors: Shitsuw Shikata, Masafumi Nomura, Toshihiro Oki, Hitoshi Tanimoto, Tsutomu Tokumoto, Nobuyuki Ogura
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Patent number: 6197740Abstract: The present invention provides a detergent composition which is excellent in enzyme stability and exhibits excellent detergency particularly to protein-related dirt of socks and other items even under laundering conditions at a lower temperature. That is, the present invention provides a detergent composition comprising specific proportions of (a) an anionic surfactant, (b) a chlorine scavenger, (c) a protease whose &agr;-keratin-hydrolyzing activity at 10° C. is not less than 0.09×10−3 &mgr;g/mPU·min and (d) a protease whose &agr;-keratin-hydrolyzing activity at 10° C. is less than 0.09×10−3 &mgr;g/mPU·min.Type: GrantFiled: March 17, 2000Date of Patent: March 6, 2001Assignee: Kao CorporationInventors: Shitsuw Shikata, Masafumi Nomura, Toshihiro Oki, Hitoshi Tanimoto, Tsutomu Tokumoto, Nobuyuki Ogura
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Patent number: 6172030Abstract: Detergent compositions containing protopectinase whose optimum pH for the reaction is 7.0 or higher when protopectin or polygalacturonic acid is used as a substrate. The detergent compositions are endowed with remarkable detergency against mud soil.Type: GrantFiled: October 8, 1999Date of Patent: January 9, 2001Assignee: Kao CorporationInventors: Yasunao Wada, Miyuki Kasai, Shitsuw Shikata, Atsushi Suzumatsu, Kenzo Koike, Yuji Hatada, Tohru Kobayashi, Susumu Ito, Masaki Tsumadori
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Patent number: 5045464Abstract: A novel alkaline cellulase is disclosed. The alkaline cellulase is produced by Bacillus sp KSM-635 (FERM BP-1485) and possesses: (1) C.sub.x enzyme activity to act on carboxymethyl cellulose and weak C.sub.1 enzyme .beta.-glucosidase activities, (2) substrate specificity to act on carboxymethyl cellulose, cellulose cotton, Avicel, filter paper, cellobiose, and p-nitrophenyl cellobioside, (3) a working pH range of 4-12 and an optimum pH range of 9-10, (4) stable pH range of 4.5-10.5 when allowed to stand at 40.degree. C. for 10 minutes, and (5) working temperature range of 10.degree.-65.degree. C. and optimum temperature range at around 40.degree. C. Its activity is not inhibited by chelating agents nor by surface active agents. It is particularly effective as an additive for laundry detergent compositions.Type: GrantFiled: April 14, 1989Date of Patent: September 3, 1991Assignee: Kao CorporationInventors: Susumu Ito, Shuji Kawai, Shitsuw Shikata, Katsuya Ozaki, Tadashi Yoshimatsu
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Patent number: 4962030Abstract: Alkaline cellulases having an optimum pH in an alkaline range and being stable over a broad pH range are produced by microorganisms which belong to the genus Bacillus and grow in a neutral medium.These alkaline cellulases are rarely inhibited by ingredients ordinarily incorporated in detergents such as surface active agents, proteinases and chelating agents, so that they can be conveniently used in detergent compositions.Type: GrantFiled: November 27, 1987Date of Patent: October 9, 1990Assignee: KAO CorporationInventors: Shuji Kawai, Kazushi Oshino, Hiromi Okoshi, Hajime Mori, Katsuya Ozaki, Shitsuw Shikata, Susumu Ito, Kikuhiko Okamoto
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Patent number: 4945053Abstract: Novel alkaline cellulase K, CMCase I and CMCase II are obtained by isolation from a culture product of Bacillus sp KSM-635.These enzymes stably work in a wide range including an alkaline side, and their activity is shown even at low temperatures. Further, they have a strong resistance to surface active agents, chelating agents and proteinases. Therefore, they can be effectively utilized not only as an additive for clothing detergents, but also as a biomass and in other fields.Type: GrantFiled: October 21, 1987Date of Patent: July 31, 1990Assignee: Kao CorporationInventors: Susumu Ito, Tomokazu Sato, Katsuya Ozaki, Shitsuw Shikata, Kikuhiko Okamoto, Shigeo Inoue, Kenzo Koike, Yuichi Ota, Akira Takei