Patents by Inventor Masayuki Oizumi
Masayuki Oizumi 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: 4994133Abstract: A continuous process for producing reinforced resin laminates comprising the steps of impregnating a fibrous substrate with a liquid resin which is free of volatile solvent and is capable of curing without generating liquid and gaseous byproducts, laminating a plurality of the resin-impregnated substrates into a unitary member, sandwiching the laminate between a pair of covering sheets, and curing the laminate between said pair of covering sheets without applying appreciable pressure. The improvement comprises adjusting the final resin content in said resin impregnated substrate at 10 to 90% by weight based on the total weight of said impregnated substrate.Type: GrantFiled: May 23, 1985Date of Patent: February 19, 1991Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masakazu Uekira, Masana Goto, Ichiro Azumi, Shoji Uozumi, Masaharu Abe, Yasuo Fushiki, Minoru Isshiki, Kunio Kawasaki
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Patent number: 4803115Abstract: There is provided an electrical laminate comprising a cured assemblage of a plurality of glass fiber type substrates impregnated with a curable resin composition containing (a) a halogenated bisphenol type unsaturated polyester resin and (b) an epoxy acrylate resin which may optionally be halogen-containing. This laminate features high dimensional stability, improved through-hole reliability, and excellent mechanical strength. A continuous production method for laminates is also described.Type: GrantFiled: September 25, 1986Date of Patent: February 7, 1989Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Yasuo Fushiki, Minoru Isshiki, Hiroshi Nakano, Masayuki Oizumi, Masayoshi Shimomura, Keiji Imajo
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Patent number: 4572859Abstract: An electrical laminate comprising a plurality of fibrous cellulosic substrate layers and alternately interposed layers of cured epoxy or unsaturated polyester resin between the adjacent substrate layers, wherein each of the substrate layers is embedded in a matrix of said cured resin which is substantially integral with said layers of cured resin, and consists essentially of cellulosic fibers having thereon a coating of methylol group-containing resin such as aminoplast resins. The laminate may be unclad or cladded with a metal foil.Type: GrantFiled: April 15, 1985Date of Patent: February 25, 1986Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Yasuo Fushiki, Masaharu Abe, Masayuki Oizumi
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Patent number: 4571279Abstract: A continuous process for producing reinforced resin laminates comprising the steps of impregnating a fibrous substrate with a liquid resin which is free of volatile solvent and is capable of curing without generating liquid and gaseous byproducts, laminating a plurality of the resin-impregnated substrates into a unitary member, sandwiching the laminate between a pair of covering sheets, and curing the laminate between said pair of covering sheets without applying appreciable pressure. The improvement comprises adjusting the final resin content in said resin impregnated substrate at 10 to 90% by weight based on the total weight of said impregnated substrate.Type: GrantFiled: November 28, 1983Date of Patent: February 18, 1986Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masakazu Uekita, Masana Goto, Ichiro Azumi, Shoji Uozumi, Masaharu Abe, Yasuo Fushiki, Minoru Isshiki, Kunio Kawasaki
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Patent number: 4521491Abstract: A flame-retarded copper-clad laminate is provided comprising a plurality of paper substrate layers each impregnated with an unsaturated polyester resin and a copper cladding adhesively bonded onto at least one side thereof.The improvement comprises said unsaturated polyester resin containing an aliphatic and/or alicyclic brominated flame-retardant and aromatic brominated flame-retardant in combination.Type: GrantFiled: January 18, 1984Date of Patent: June 4, 1985Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masaharu Abe, Yasuo Fushiki
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Patent number: 4486505Abstract: A flame retarded copper clad laminate is provided comprising a plurality of paper substrate layers each impregnated with a halogen-containing unsaturated polyester resin containing about 1% to about 30% by weight of a basic filler, and a copper cladding adhesively bonded onto at least one side of the laminate.Type: GrantFiled: November 15, 1982Date of Patent: December 4, 1984Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Yasuo Fushiki, Masayuki Oizumi, Masaharu Abe, Makoto Watanabe
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Patent number: 4451317Abstract: A continuous process for producing reinforced resin laminates comprising the steps of impregnating a fibrous substrate with a liquid resin which is free of volatile solvent and is capable of curing without generating liquid and gaseous byproducts, laminating a plurality of the resin-impregnated substrates into a unitary member, sandwiching the laminate between a pair of covering sheets, and curing the laminate between said pair of covering sheets without applying appreciable pressure. The improvement comprises adjusting the final resin content in said resin impregnated substrate at 10 to 90% by weight based on the total weight of said impregnated substrate.Type: GrantFiled: June 2, 1982Date of Patent: May 29, 1984Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masakazu Uekita, Masana Goto, Ichiro Azumi, Shoji Uozumi, Masaharu Abe, Yasuo Fushiki, Minoru Isshiki, Kunio Kawasaki
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Patent number: 4410388Abstract: Variations in performance of metal clad reinforced resin laminates may be minimized by aging the laminates in a high-temperature, high-humidity atmosphere subsequent to the curing step. The products are useful for the production of printed circuit wiring boards.Type: GrantFiled: September 22, 1981Date of Patent: October 18, 1983Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masaharu Abe, Yasuo Fushiki
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Patent number: 4398987Abstract: There is provided a method for continuous production of a laminated sheet product comprising transporting a plurality of continuous sheet component materials in vertically discrete relation, supplying an impregnating resin to each of the component materials, joining the resin-impregnated component materials to give an assembly and laminating a film material to either side of the assembly, all in a continuous sequence, the improvement wherein the resin-impregnated component materials are first transported in a substantially horizontal path, at least one substantially V-shaped or U-shaped path preceded by a declining path, and an ascending path in the order mentioned before the component materials are joined.Type: GrantFiled: July 27, 1981Date of Patent: August 16, 1983Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masaharu Abe, Yasuo Fushiki
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Patent number: 4388129Abstract: Bubble- or void-free electrical laminates such as unclad or metal clad laminates are produced by impregnating a porous fibrous substrate with a solvent-free liquid resin capable of curing to a rigid state without producing a volatile by-product, combining a plurality of impregnated substrates to form a unitary member, allowing substantially all of entrapped air bubbles retained in the combination to disappear by dissolving into the liquid resin, and then curing the combination.Type: GrantFiled: September 22, 1981Date of Patent: June 14, 1983Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masaharu Abe, Yasuo Fushiki
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Patent number: 4372800Abstract: A continuous process for producing reinforced resin laminates comprising the steps of impregnating a fibrous substrate with a liquid resin which is free of volatile solvent and is capable of curing without generating liquid and gaseous byproducts, laminating a plurality of the resin-impregnated substrates into a unitary member, sandwiching the laminate between a pair of covering sheets, and curing the laminate between said pair of covering sheets without applying appreciable pressure. The improvement comprises adjusting the final resin content in said resin impregnated substrate at 10 to 90% by weight based on the total weight of said impregnated substrate.Type: GrantFiled: January 8, 1981Date of Patent: February 8, 1983Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masakazu Uekita, Masana Goto, Ichiro Azumi, Shoji Uozumi, Masaharu Abe, Yasuo Fushiki, Minoru Isshiki, Kunio Kawasaki
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Patent number: 4314002Abstract: This invention relates to insulating laminates which consists with several sheets of reinforcements (1) inpregnated with curable resin and layers (2) of cured resin located between each reinforcement. Metal clad laminates is also disclosed which is consisting with reinforcement (1), layers (2) of cured resin and metal foil (5) to be placed on the laminates. Each reinforcements (1) are substantially isolated by the resin layers (2).Type: GrantFiled: January 29, 1980Date of Patent: February 2, 1982Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Masayuki Oizumi, Masana Goto, Minoru Ishiki, Shoji Uozumi