Patents by Inventor Tadashi Sakuma
Tadashi Sakuma 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: 20230071573Abstract: An FRP molded product formed by impregnating a fiber base material with a matrix resin using a flow medium, wherein the flow medium has a sheet shape and comprises fibers made of a phenoxy resin, the matrix resin is an epoxy resin, the fiber base material and the flow medium are stacked, at least part of the flow medium is hardened in a state where the part of the flow medium is integrated with the matrix resin by dissolution or adhesion, and the hardened flow medium becomes a design face.Type: ApplicationFiled: November 13, 2022Publication date: March 9, 2023Inventors: Kiyoshi UZAWA, Tadashi SAKUMA, Nobuaki INUI, Hiroki MATSUMOTO, Masayoshi HORI
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Patent number: 7141265Abstract: Provided is an oil/fat powder comprising the following Components (A), (B) and (C): (A) 15 to 79.9 wt. % of a glyceride mixture containing 5 to 84.9 wt. % of triglycerides, 0.1 to 5 wt. % of monoglycerides and 15 to 94.9 wt. % of diglycerides, and having, as at least 50 wt. % of all the constitutive fatty acids, unsaturated fatty acids; (B) 20 to 84.9 wt. % of one or at least two powder forming bases selected from carbohydrates, proteins and peptides; (C) 0.1 to 5 wt. % of water. The diglyceride-containing oil/fat powder according to the present invention exhibits good taste, and excellent dispersibility in water and storage stability. Moreover, owing to good handling use and workability when it is added to food, it can be used readily for various forms of foods. Foods containing this oil/fat powder taste good and have good storage stability.Type: GrantFiled: February 17, 2003Date of Patent: November 28, 2006Assignee: Kao CorporationInventors: Tadashi Sakuma, Yoshinobu Nakajima, Hiroyuki Yamashita
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Publication number: 20050123667Abstract: Provided is an oil/fat powder comprising the following Components (A), (B) and (C): (A) 15 to 79.9 wt. % of a glyceride mixture containing 5 to 84.9 wt. % of triglycerides, 0.1 to 5 wt. % of monoglycerides and 15 to 94.9 wt. % of diglycerides, and having, as at least 50 wt. % of all the constitutive fatty acids, unsaturated fatty acids; (B) 20 to 84.9 wt. % of one or at least two powder forming bases selected from carbohydrates, proteins and peptides; (C) 0.1 to 5 wt. % of water. The diglyceride-containing oil/fat powder according to the present invention exhibits good taste, and excellent dispersibility in water and storage stability. Moreover, owing to good handling use and workability when it is added to food, it can be used readily for various forms of foods. Foods containing this oil/fat powder taste good and have good storage stability.Type: ApplicationFiled: February 17, 2003Publication date: June 9, 2005Applicant: KAO CORPORATIONInventors: Tadashi Sakuma, Yoshinobu Nakajima, Hiroyuki Yamashita
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Patent number: 6734228Abstract: A thermosetting water-based resin composition comprising an oil-soluble initiator of which a temperature for one-minute half-life is from 90° to 270 ° C. and a polycondensation resin comprising an unsaturated dicarboxylic acid having a radical-polymerizable unsaturated bond or an acid anhydride thereof as at least one constituent monomer, wherein the polycondensation resin has an acid value of from 3 to 100 mg KOH/g, and wherein said oil-soluble initiator is present in said polycondensation resin; a process for preparing the thermosetting water-based resin composition; a molding compound composition comprising the water-based resin composition; and a molding product prepared by molding the molding compound composition.Type: GrantFiled: September 13, 2001Date of Patent: May 11, 2004Assignee: Kao CorporationInventors: Tadashi Sakuma, Kuniyasu Kawabe
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Patent number: 6713118Abstract: Disclosed herein are an edible oil containing at least 15% by weight of diacylglycerol and 2 to 10% by weight of phytosterol and being a transparent liquid at normal temperature, wherein the content of hydrocarbons having 29 to 31 carbon atoms in the oil and fat is at most 1 part by weight per 100 parts by weight of the phytosterol. The edible oil dissolve phytosterol at a high concentration therein and cause no turbidity at a low temperature.Type: GrantFiled: July 19, 2001Date of Patent: March 30, 2004Assignee: Kao CorporationInventors: Yoshinobu Nakajima, Tsutomu Nishide, Tadashi Sakuma
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Publication number: 20030230271Abstract: The major object of the invention is to provide an internal combustion engine stating device capable of improving cost effectiveness and quality assurance.Type: ApplicationFiled: June 11, 2003Publication date: December 18, 2003Applicants: HITACHI, LTD., HITACHI CAR ENGINEERNG CO., LTD.Inventors: Yasuhiko Maruhashi, Tatsumi Nishida, Shigenori Nakazato, Rikio Goto, Tadashi Sakuma
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Publication number: 20020045000Abstract: Disclosed herein are an edible oil containing at least 15% by weight of diacylglycerol and 2 to 10% by weight of phytosterol and being a transparent liquid at normal temperature, wherein the content of hydrocarbons having 29 to 31 carbon atoms in the oil and fat is at most 1 part by weight per 100 parts by weight of the phytosterol. The edible oil dissolve phytosterol at a high concentration therein and cause no turbidity at a low temperature.Type: ApplicationFiled: July 19, 2001Publication date: April 18, 2002Applicant: KAO CORPORATIONInventors: Yoshinobu Nakajima, Tsutomu Nishide, Tadashi Sakuma
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Patent number: 6300387Abstract: A molding composition comprises (A) an aggregate, at least one of (B) an unsaturated polyester and (C) an unsaturated polyester-polyamide, and (D) a radical generator comprising a peroxide represented by formula: R1OOC(CH3)2—R3—C(CH3)2OOR2 wherein R1 and R2, which may be the same or different, each represent an alkyl group having 3 to 10 carbon atoms or an arylalkyl group having 7 to 17 carbon atoms; and R3 represents an arylene group.Type: GrantFiled: February 22, 2001Date of Patent: October 9, 2001Assignee: Kao CorporationInventors: Takashi Yamaguchi, Tadashi Sakuma, Kuniyasu Kawabe
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Publication number: 20010020048Abstract: A molding composition comprises (A) an aggregate, at least one of (B) an unsaturated polyester and (C) an unsaturated polyester-polyamide, and (D) a radical generator comprising a peroxide represented by formula:Type: ApplicationFiled: February 22, 2001Publication date: September 6, 2001Inventors: Takashi Yamaguchi, Tadashi Sakuma, Kuniyasu kawabe
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Patent number: 6031019Abstract: Aqueous ink for ink-jet printing comprises an emulsion of fine polymer particles and contains at least one compound selected from an amino acid or a salt thereof and the like.Type: GrantFiled: February 4, 1998Date of Patent: February 29, 2000Assignee: Kao CorporationInventors: Takehiro Tsutsumi, Koji Azuma, Michitaka Sawada, Tadashi Sakuma, Kenji Kaida, Shigemi Wakabayashi, Tetsuya Ueno, Kuniyasu Kawabe
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Patent number: 5943527Abstract: A photosensitive drum unit for an electrostatographic printing apparatus is disclosed. The drum unit includes a drum tube formed with at least one opening at one axial end thereof. A flange member is configured to be inserted into the opening in the drum tube. The flange member is provided with a support hole into which a shaft pin is inserted for supporting the drum tube and flange member. An earth plate is formed with projections or claws that extend radially outward from a peripheral edge of the earth plate such that the projections contact with an inner peripheral surface of the drum tube. The earth plate is also formed with a pair of contact pieces extend axially away from the earth plate and also extend toward one another. The contact pieces are spaced apart from one another by a predetermined distance but are also configured to contact and engage a portion of the shaft pin.Type: GrantFiled: May 21, 1998Date of Patent: August 24, 1999Assignee: Mita Industrial Co., Ltd.Inventors: Nobuyuki Kashiwagi, Keizo Kimoto, Tadashi Sakuma
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Patent number: 5877235Abstract: The aqueous ink of the present invention comprises a suspension of a polymer, preferably a polyester or a polyester polyamide, having adsorbed a dye or a pigment, wherein the surface tension (.gamma.) and the viscosity (.eta.) of the ink at 20.degree. C. and the average particle size (d) of the suspended particles satisfy the following inequality (1):0.1.ltoreq..gamma..multidot..eta..multidot.d.ltoreq.11 (1)wherein the units of the parameters .gamma., .eta. and d are dyne/cm, cps, and .mu.m, respectively.Type: GrantFiled: June 30, 1997Date of Patent: March 2, 1999Assignee: Kao CorporationInventors: Tadashi Sakuma, Tetsuya Ueno, Kuniyasu Kawabe
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Patent number: 5830615Abstract: The present invention provides a novel naphthylenediamine derivative which is superior in electric charge transferring capability, compatibility with binding resin and stability, and an electrophotosensitive material which has a higher sensitivity and an excellent durability. The above naphthylenediamine derivative is represented by the following general formula (1), and the electrophotosensitive material is formed by providing a photosensitive layer having this naphthylenediamine derivative as an electric charge transferring material on a conductive substrate. ##STR1## wherein R.sup.1 to R.sup.4, R.sup.5a to R.sup.5f and a to d are as defined.Type: GrantFiled: May 29, 1997Date of Patent: November 3, 1998Assignee: Mita Industrial Co., Ltd.Inventors: Eiichi Miyamoto, Mikio Kakui, Hideo Nakamori, Yukikatsu Imanaka, Tadashi Sakuma, Maki Uchida, Hiroaki Iwasaki, Yasuyuki Hanatani, Nariaki Tanaka, Yuka Nakamura
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Patent number: 5767315Abstract: The present invention provides a novel naphthylenediamine derivative which is superior in electric charge transferring capability, compatibility with binding resin and stability. The above naphthylenediamine derivative is represented by the following general formula (1) ##STR1## wherein R.sup.1 to R.sup.4, R.sup.5a to R.sup.5f and a to d are as defined.Type: GrantFiled: October 5, 1995Date of Patent: June 16, 1998Assignee: Mita Industrial Co., Ltd.Inventors: Eiichi Miyamoto, Mikio Kakui, Hideo Nakamori, Yukikatsu Imanaka, Tadashi Sakuma, Maki Uchida
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Patent number: 5695374Abstract: A nonwoven fabric for a liner of a floppy disk is characterized by a binder which is applied to the fibers of the nonwoven fabric. The binder comprises (a) an emulsion obtainable from a polymerizable unsaturated monomer having a functional group and other polymerizable unsaturated monomers capable of undergoing copolymerization with said polymerizable unsaturated monomer, and (b) a melamine compound having a methylol group.Type: GrantFiled: September 19, 1995Date of Patent: December 9, 1997Assignee: Kao CorporationInventors: Tadashi Sakuma, Keizo Takahashi, Zenbei Meiwa, Hiroshi Ikeda, Mami Murata
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Patent number: 5352554Abstract: A compound represented by the formula (1): ##STR1## wherein Ar.sub.1 represents an arylene group; Ar.sub.2 and Ar.sub.3 independently represent an aryl group or an arylene group; R.sub.2 and R.sub.3, which may be identical or not, independently represent a hydrogen atom or an alkyl group having a carbon number of 4 or less, or R.sub.2 and R.sub.3 both represent --SiR.sub.4 R.sub.5 R.sub.6 (R.sub.4, R.sub.5 and R.sub.6, which may be identical or not, independently represent an alkyl group, aralkyl group or aryl group which may be substituted); R.sub.1 represents --SiR.sub.7 R.sub.8 R.sub.9 (R.sub.7, R.sub.8 and R.sub.9, which may be identical or not, independently represent an alkyl group, cycloalkyl group, aralkyl group or aryl group which may be substituted, or none (only in the case where R.sub.2 and R.sub.3 represent --SiR.sub.4 R.sub.5 R.sub.6), one or two of R.sub.7, R.sub.8 and R.sub.9 represent the following: ##STR2## wherein Ar.sub.1, Ar.sub.2, Ar.sub.3, R.sub.2 and R.sub.Type: GrantFiled: October 30, 1992Date of Patent: October 4, 1994Assignee: Kao CorporationInventors: Masayuki Mishima, Harumasa Yamasaki, Takashi Matsuse, Tadashi Sakuma, Hiroyasu Togashi
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Patent number: 5324610Abstract: The organic photosensitive material for electrophotography in accordance with this invention is characterized in that a non-symmetrically substituted diphenoquinone derivative represented by the following formulae ##STR1## wherein each of R.sub.1 and R.sub.2 represents an alkyl or aryl group, R.sub.2 having larger carbon atoms than R.sub.1, is used as an electron transporting agent. This photosensitive material has a residual potential limited to a low level, and shows excellent sensitivity in both positive charging and negative charging.Type: GrantFiled: March 26, 1992Date of Patent: June 28, 1994Assignee: Mita Industrial Co., Ltd.Inventors: Masashi Tanaka, Tadashi Sakuma, Toshiyuki Fukami, Hideo Nakamori
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Patent number: 5290963Abstract: The present invention is directed to a silicon-containing triarylamine compound represented by the formula (1): ##STR1## wherein Q.sub.2 and Q.sub.3 independently represent a hydrogen atom or --CH.sub.2 SiR.sub.1 R.sub.2 R.sub.3 group (R.sub.1, R.sub.2 and R.sub.3, which may be identical or not, independently represent an alkyl group, cycloalkyl group, aralkyl group or aryl group which may be substituted); Ar.sub.1, Ar.sub.2 and Ar.sub.3 independently represent an arylene group which may be substituted; Q.sub.1 represents a --CH.sub.2 SiR.sub.1 R.sub.2 R.sub.3 group, --CH.sub.2 SiR.sub.1 R.sub.2 R.sub.4 group (R.sub.4 represents the following: ##STR2## wherein Q.sub.2 and Q.sub.3 independently represent a hydrogen atom) or --CH.sub.2 SiR.sub.1 R.sub.4 R.sub.4 group, a method of its production and a photoreceptor for electrophotography incorporating it as a charge transport material. The photoreceptor is very excellent in sensitivity and durability.Type: GrantFiled: May 6, 1991Date of Patent: March 1, 1994Assignee: Kao CorporationInventors: Masayuki Mishima, Harumasa Yamasaki, Takashi Matsuse, Tadashi Sakuma, Hiroyasu Togashi
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Patent number: 5192633Abstract: Disclosed is a laminate type photosensitive material for the electrophotography, which comprises a charge-generating layer and a charge-transporting layer, which are formed on an electroconductive substrate, wherein the charge-transporting layer comprises a first charge-transporting material having an ionization potential smaller than that of a charge-generating material used for the charge-generating layer and a second charge-transporting material having an ionization potential larger than that of the charge-generating material.Type: GrantFiled: September 20, 1991Date of Patent: March 9, 1993Assignee: Mita Industrial Co., Ltd.Inventors: Hiroaki Iwasaki, Youichi Takesawa, Hiroshi Takemoto, Masashi Tanaka, Keizo Kimoto, Tadashi Sakuma
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Patent number: 5187310Abstract: A compound represented by the formula (1): ##STR1## wherein Ar.sub.1 l represents an arylene group; Ar.sub.2 and Ar.sub.3 independently represent an aryl group or an arylene group; R.sub.2 and R.sub.3, which may be identical or not, independently represent a hydrogen atom or an alkyl group having a carbon number of 4 or less, or R.sub.2 and R.sub.3 both represent --SiR.sub.4 R.sub.5 R.sub.6 (R.sub.4, R.sub.5 and R.sub.6, which may be identical or not, independently represent an alkyl group, aralkyl group or aryl group which may be substituted);R.sub.1 represents --SiR.sub.7 R.sub.8 R.sub.9 (R.sub.7, R.sub.8 and R.sub.9, which may be identical or not, independently represent an alkyl group, cycloalkyl group, aralkyl group or aryl group which may be substituted, or none (only in the case where R.sub.2 and R.sub.3 represent --SiR.sub.4 R.sub.5 R.sub.6), one or two of R.sub.7, R.sub.8 and R.sub.9 represent the following: ##STR2## wherein Ar.sub.1, Ar.sub.2, Ar.sub.3, R.sub.2 and R.sub.Type: GrantFiled: March 7, 1991Date of Patent: February 16, 1993Assignee: Kao CorporationInventors: Masayuki Mishima, Harumasa Yamasaki, Takashi Matsuse, Tadashi Sakuma, Hiroyasu Togashi