Patents by Inventor Kazuo Hokkirigawa
Kazuo Hokkirigawa 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: 11692993Abstract: To provide tissue paper excellent in softness and smoothness. In tissue paper that is two-ply non-moisturizing tissue paper to which no chemical solution is applied, a basis weight per sheet is 10.0 to 18.0 g/m2, the thickness of two plies is 100 to 240 ?m, a dry tensile strength in the paper horizontal direction is 70 to 180 cN/25 mm, a wet tensile strength in the paper horizontal direction is 25 to 55 cN/25 mm, and a free sensory evaluation value Ef calculated according to the following Equation 1 is 3.7 to 6.6, and a slip sensory evaluation value Es calculated according to the following Equation 2 is 5.0 to 8.2. Free sensory evaluation value Ef=?2.879×(dry tensile strength in paper horizontal direction)+6.55×(wet tensile strength in paper horizontal direction)+5.36??(Equation 1) Slip sensory evaluation value Es=?8.80×(dynamic friction coefficient)?0.41×(arithmetic mean surface roughness)+13.Type: GrantFiled: October 29, 2018Date of Patent: July 4, 2023Assignees: DAIO PAPER CORPORATION, TOHOKU UNIVERSITYInventors: Shuta Yasui, Hidenori Yorozu, Kazuo Hokkirigawa, Takeshi Yamaguchi, Kei Shibata, Naoya Yamai, Risa Nakane
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Patent number: 11384483Abstract: The present invention is directed to a non-moisturizing high-grade type tissue paper having excellent softness wherein the polyol applied to the two-ply tissue paper is not applied by external addition. In various embodiments, the tissue paper has a basis weight per ply of 14.0 to 17.0 g/m2, a paper thickness for two plies of 160 to 220 ?m, and a water content of 4.0 to 9.0% by mass, contains 0.15 to 0.45% by mass of an oily component to be extracted with diethyl ether, and has a bending rigidity of less than 0.006 gf·cm/cm in CD (cross direction) and a bending recovery force of less than 0.005 gf·cm/cm in CD.Type: GrantFiled: June 3, 2019Date of Patent: July 12, 2022Assignees: DAIO PAPER CORPORATION, TOHOKU UNIVERSITYInventors: Sachiko Takahashi, Kazuo Hokkirigawa, Takeshi Yamaguchi, Kei Shibata
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Publication number: 20220106740Abstract: To provide a non-moisturizing high-grade type tissue paper having excellent softness. The problem is solved by a 3-ply tissue paper having a basis weight of 12.0 g/m2 or more per ply, having a paper thickness of 200 to 265 ?m for three plies, having a water content of 4.0 to 9.0% by mass, containing 0.15 to 0.45% by mass of an oily component to be extracted with diethyl ether, and having a bending rigidity of less than 0.006 gf·cm/cm in CD (Cross Direction) and a bending recovery force of less than 0.005 gf·cm/cm in CD.Type: ApplicationFiled: January 30, 2020Publication date: April 7, 2022Inventors: Noritada TOMIOKA, Minoru IWASAKI, Shuta YASUI, Sachiko TAKAHASHI, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA
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Publication number: 20210338494Abstract: An absorbent article includes a permeable top sheet, an impermeable back sheet, an absorbing part disposed between the top sheet and the back sheet, and a friction reducing layer disposed between the back sheet and the absorbing part. The friction between the friction reducing layer and the back sheet or the friction between the friction reducing layer and the absorbing part is less than the friction between the absorbing part and the back sheet.Type: ApplicationFiled: July 17, 2019Publication date: November 4, 2021Inventors: Atsuko HASEZAWA, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA
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Publication number: 20210198850Abstract: To provide a non-moisturizing high-grade type tissue paper having excellent softness. The problem is solved by a two-ply tissue paper to which a polyol is not applied by external addition. The tissue paper has a basis weight per ply of 14.0 to 17.0 g/m2, a paper thickness for two plies of 160 to 220 ?m, and a water content of 4.0 to 9.0% by mass, contains 0.15 to 0.45% by mass of an oily component to be extracted with diethyl ether, and has a bending rigidity of less than 0.006 gf·cm/cm in CD (cross direction) and a bending recovery force of less than 0.005 gf·cm/cm in CD.Type: ApplicationFiled: June 3, 2019Publication date: July 1, 2021Inventors: Sachiko TAKAHASHI, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA
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Publication number: 20210172925Abstract: To provide tissue paper excellent in softness and smoothness. In tissue paper that is two-ply non-moisturizing tissue paper to which no chemical solution is applied, a basis weight per sheet is 10.0 to 18.0 g/m2, the thickness of two plies is 100 to 240 ?m, a dry tensile strength in the paper horizontal direction is 70 to 180 cN/25 mm, a wet tensile strength in the paper horizontal direction is 25 to 55 cN/25 mm, and a free sensory evaluation value Ef calculated according to the following Equation 1 is 3.7 to 6.6, and a slip sensory evaluation value Es calculated according to the following Equation 2 is 5.0 to 8.2. Free sensory evaluation value Ef=?2.879×(dry tensile strength in paper horizontal direction)+6.55×(wet tensile strength in paper horizontal direction)+5.36??(Equation 1) Slip sensory evaluation value Es=?8.80×(dynamic friction coefficient)?0.41×(arithmetic mean surface roughness)+13.Type: ApplicationFiled: October 29, 2018Publication date: June 10, 2021Inventors: Shuta YASUI, Hidenori YOROZU, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA, Naoya YAMAI, Risa NAKANE
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Patent number: 10570568Abstract: An all-purpose type tissue paper. A two-ply tissue paper that does not have moisturizer applied thereon, that has a basis weight per ply of 10.0-16.0 g/m2, a paper thickness per two-ply of 120-200 ?m, a softness of not more than 1.0, a dry tensile strength (T) in the MD direction of 240-300 cN/25 mm, and an average dynamic friction coefficient of 1.40-1.65.Type: GrantFiled: August 4, 2016Date of Patent: February 25, 2020Assignees: DAIO PAPER CORPPORATION, TOHOKU UNIVERSITYInventors: Shuta Yasui, Norimitsu Hirata, Hidenori Yorozu, Kazuo Hokkirigawa, Takeshi Yamaguchi, Kei Shibata, Wataru Tanabe, Shohei Matsumura
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Patent number: 10208833Abstract: [Problem] To provide a chain link which can improve wear resistance even under lubricating conditions in adhesive mode. [Solution] Steel link plates 2 for a silent chain having pinholes 22 for inserting linking pins 3 are formed. A hardened layer obtained by performing heat treatment (martempering, for example) is formed on the inner circumferential surface of the pinholes 22, and a large number of hard particles hp having the same hardness as or a greater hardness than the surface hardness of said hardened layer are dotted in a crystalline state within the martensite structure on the surface layer section of the hardened layer. The hard particles hp are an oxide, carbide or nitride of any element from Cr, V, Ti and Nb which was originally present in the steel of the link plate material.Type: GrantFiled: June 25, 2014Date of Patent: February 19, 2019Assignee: BorgWarner Inc.Inventors: Junichi Eda, Yasushi Miyazaki, Yukio Yoshida, Kazuo Hokkirigawa
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Publication number: 20180258592Abstract: An all-purpose type tissue paper. A two-ply tissue paper that does not have moisturizer applied thereon, that has a basis weight per ply of 10.0-16.0 g/m2, a paper thickness per two-ply of 120-200 ?m, a softness of not more than 1.0, a dry tensile strength (T) in the MD direction of 240-300 cN/25 mm, and an average dynamic friction coefficient of 1.40-1.65.Type: ApplicationFiled: August 4, 2016Publication date: September 13, 2018Applicants: DAIO PAPER CORPORATION, TOHOKU UNIVERSITYInventors: Shuta YASUI, Norimitsu HIRATA, Hidenori YOROZU, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA, Wataru TANABE, Shohei MATSUMURA
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Publication number: 20170150782Abstract: An outsole of a shoe includes: a plurality of ridges having a tread surface to be in contact with a road surface; and at least one longitudinal groove defined between the plurality of ridges. At least in a partial area of each of a forefoot portion and a rear foot portion on a medial side of a foot, the plurality of ridges and the longitudinal groove extend in a longitudinal direction or a diagonal longitudinal direction and are set so that an angle of the ridges and that of the longitudinal groove with respect to a long axis of the outsole are in a range of 0° to 35°. A ratio of a length of the tread surface of the ridges with respect to a width of the tread surface is set to be 1.8 to 200. The width of the tread surface of the ridges is set to be greater than a width of the longitudinal groove by a factor of 2 to 100.Type: ApplicationFiled: May 14, 2014Publication date: June 1, 2017Applicant: ASICS CORPORATIONInventors: Kenta Moriyasu, Tsuyoshi Nishiwaki, Kazuo Hokkirigawa, Takeshi Yamaguchi, Kei Shibata
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Publication number: 20160153525Abstract: [Problem] To provide a chain link which can improve wear resistance even under lubricating conditions in adhesive mode. [Solution] Steel link plates 2 for a silent chain having pinholes 22 for inserting linking pins 3 are formed. A hardened layer obtained by performing heat treatment (martempering, for example) is formed on the inner circumferential surface of the pinholes 22, and a large number of hard particles hp having the same hardness as or a greater hardness than the surface hardness of said hardened layer are dotted in a crystalline state within the martensite structure on the surface layer section of the hardened layer. The hard particles hp are an oxide, carbide or nitride of any element from Cr, V, Ti and Nb which was originally present in the steel of the link plate material.Type: ApplicationFiled: June 25, 2014Publication date: June 2, 2016Inventors: Junichi EDA, Yasushi MIYAZAKI, Yukio YOSHIDA, Kazuo HOKKIRIGAWA
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Publication number: 20160083566Abstract: A rubber composition includes an ethylene-propylene-diene rubber, and a porous carbon particle derived from a plant material. Not less than 160 parts by mass and not more than 340 parts by mass of the porous carbon particle is included relative to 100 parts by mass of the ethylene-propylene-diene rubber. A slide member includes a cross-linked rubber body in which the rubber composition is cross-linked.Type: ApplicationFiled: September 11, 2015Publication date: March 24, 2016Inventors: Kei TAKAHASHI, Mika HAYASHI, Kazuo HOKKIRIGAWA, Takeshi YAMAGUCHI, Kei SHIBATA
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Patent number: 9120913Abstract: An elastic composite material containing a base polymer of a simple substance or a mixture of rubber or thermoplastic elastomer as a base material, and a hard porous carbon material containing carbide of defatted bran and carbide of phenolic resin. The hard porous carbon material is added in a ratio of 200 parts or more by weight relative to 100 parts by weight of the base polymer.Type: GrantFiled: September 30, 2013Date of Patent: September 1, 2015Assignee: Hitachi Metals, Ltd.Inventors: Kei Takahashi, Osamu Murakami, Mika Hayashi, Kazuo Hokkirigawa, Takeshi Yamaguchi, Kei Shibata
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Publication number: 20150094399Abstract: An elastic composite material containing a base polymer of a simple substance or a mixture of rubber or thermoplastic elastomer as a base material, and a hard porous carbon material containing carbide of defatted bran and carbide of phenolic resin. The hard porous carbon material is added in a ratio of 200 parts or more by weight relative to 100 parts by weight of the base polymer.Type: ApplicationFiled: September 30, 2013Publication date: April 2, 2015Applicant: Hitachi Metals, Ltd.Inventors: Kei TAKAHASHI, Osamu Murakami, Mika Hayashi, Kazuo Hokkirigawa, Takeshi Yamaguchi, Kei Shibata
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Patent number: 7306374Abstract: The invention provides a special type bearing device that is insusceptible to damage, is light in weight, has a long service life and excellent wear resistance, is insusceptible to the effect of change in temperature, is easy to fabricate, and has little offensiveness towards mating members. Further, the same is capable of sufficiently retaining a lubricant such as oil and grease, and retaining the lubricant for a long period of time without the need of supplying oil during operation, thereby rendering it maintenance-free. That is, the special type bearing device as described above has an axial shaft, a pair of rotating bodies fixedly attached to the shaft, and a supporting body with which the rotating bodies are in contact, wherein any one of the shift, the rotating bodies, and the supporting body is made of RB ceramic or CRB ceramic.Type: GrantFiled: December 14, 2006Date of Patent: December 11, 2007Assignee: Minebea Co., Ltd.Inventors: Kazuo Hokkirigawa, Rikuro Obara
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Publication number: 20070116390Abstract: The invention provides a special type bearing device that is insusceptible to damage, is light in weight, has a long service life and excellent wear resistance, is insusceptible to the effect of change in temperature, is easy to fabricate, and has little offensiveness towards mating members. Further, the same is capable of sufficiently retaining a lubricant such as oil and grease, and retaining the lubricant for a long period of time without the need of supplying oil during operation, thereby rendering it maintenance-free. That is, the special type bearing device as described above has an axial shaft, a pair of rotating bodies fixedly attached to the shaft, and a supporting body with which the rotating bodies are in contact, wherein any one of the shift, the rotating bodies, and the supporting body is made of RB ceramic or CRB ceramic.Type: ApplicationFiled: December 14, 2006Publication date: May 24, 2007Inventors: Kazuo Hokkirigawa, Rikuro Obara
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Patent number: 7168857Abstract: The invention provides a special type bearing device that is insusceptible to damage, is light in weight, has a long service life and excellent wear resistance, is insusceptible to the effect of change in temperature, is easy to fabricate, and has little offensiveness towards mating members. Further, the same is capable of sufficiently retaining a lubricant such as oil and grease, and retaining the lubricant for a long period of time without the need of supplying oil during operation, thereby rendering it maintenance-free. That is, the special type bearing device as described above has an axial shaft, a pair of rotating bodies fixedly attached to the shaft, and a supporting body with which the rotating bodies are in contact, wherein any one of the shift, the rotating bodies, and the supporting body is made of RB ceramic or CRB ceramic.Type: GrantFiled: August 26, 2004Date of Patent: January 30, 2007Assignee: Minebea Co., Ltd.Inventors: Kazuo Hokkirigawa, Rikuro Obara
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Patent number: 7144932Abstract: A synthetic resin composition includes at least one synthetic resin and RBC or CRBC particles dispersed in the resin. A method for preparing a synthetic resin composition includes mixing RBC or CRBC particles with a synthetic resin at a temperature near the melting temperature of the synthetic resin. Preferably, the method of includes the step of kneading the mixture.Type: GrantFiled: February 28, 2003Date of Patent: December 5, 2006Assignee: Minebea Co., Ltd.Inventors: Kazuo Hokkirigawa, Rikuro Obara
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Patent number: 7140778Abstract: A resin composite for use in the manufacture of slide bearings is formed of a resin and fine particles of RBC or CRBC dispersed in the resin. The resin composite can be molded into slide bearings.Type: GrantFiled: February 28, 2003Date of Patent: November 28, 2006Assignee: Minebea Co., Ltd.Inventors: Kazuo Hokkirigawa, Motoharu Akiyama, Morinobu Kawamura
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Patent number: 7132155Abstract: A foam-molded synthetic resin material in which a RBC or CRBC fine powder and bubbles are homogeneously dispersed. There is provided an electrically conductive molded resin material of sufficient porosity by using a fine powder of RB ceramics (RBC) or CRB ceramics (CRBC), in which a surface thereof is not covered with a skin layer while an electrically conductive material is directly bared on the surface, and a method for preparing same and uses thereof.Type: GrantFiled: December 12, 2002Date of Patent: November 7, 2006Assignee: Minebea Co., Ltd.Inventors: Kazuo Hokkirigawa, Motoharu Akiyama, Morinobu Kawamura