Patents by Inventor Takuya Hasaki
Takuya Hasaki 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).
-
Publication number: 20190061017Abstract: An entry sheet of the present invention is used in cutting a fiber reinforced composite material and/or a metal. Moreover, in a cutting method of the present invention, cutting of a fiber reinforced composite material and/or a metal is performed using the entry sheet.Type: ApplicationFiled: October 24, 2018Publication date: February 28, 2019Inventors: Noritsugu Umehara, Takayuki Tokoroyama, Yousuke Matsuyama, Shigeru Horie, Takuya Hasaki
-
Patent number: 10159153Abstract: The present invention provides an entry sheet for drilling excellent in hole position accuracy compared with the conventional entry sheet for drilling. Such an entry sheet for drilling is an entry sheet for drilling comprising metallic support foil and a layer comprising a resin composition formed on at least one surface of the metallic support foil, in which the resin composition contains a resin and 70 parts by mass to 130 parts by mass of molybdenum disulfide based on 100 parts by mass of the resin, and the layer comprising the resin composition has a thickness in a range from 0.02 to 0.3 mm.Type: GrantFiled: March 22, 2013Date of Patent: December 18, 2018Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takayuki Kamei, Yousuke Matsuyama, Takuya Hasaki
-
Patent number: 9986644Abstract: A process for the production of an entry sheet for drilling a printed wiring board material, which process comprises forming a multi-layered water-soluble resin composition layer on at least one surface of a metal foil, wherein an aqueous solution of a water-soluble resin composition is applied to the metal foil, dried and solidified to form one water-soluble resin composition layer, the application, drying and solidification of the aqueous solution of the water-soluble resin composition are repeated at least once to form at least one water-soluble resin composition layer on the above one water-soluble resin composition layer, the multi-layered water-soluble resin composition layer is composed of these water-soluble resin composition layers, the multi-layered water-soluble resin composition layer has a thickness of at least 50 ?m and is almost free from air bubbles, and an entry sheet for drilling a printed wiring board material obtained by the above process.Type: GrantFiled: June 24, 2009Date of Patent: May 29, 2018Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yousuke Matsuyama, Reiki Akita, Takuya Hasaki
-
Patent number: 9826643Abstract: Provided is an entry sheet for drilling that, compared with a conventional entry sheet for drilling, has better hole position accuracy, can suppress drill bit breakage, and exhibits less processing chips wrapping around the drill bit. This entry sheet for drilling includes a metallic support foil and a layer comprising a resin composition that is formed on at least one surface of the metallic support foil, wherein the resin composition contains a cellulose derivative (A) and a water-soluble resin (B), the cellulose derivative (A) includes a hydroxyalkyl cellulose and/or a carboxyalkyl cellulose having a weight average molecular weight of 20,000 to 350,000, and based on 100 parts by mass of the resin composition, the content of the cellulose derivative (A) is 5 to 40 parts by mass and the content of the water-soluble resin (B) is 60 to 95 parts by mass.Type: GrantFiled: March 21, 2013Date of Patent: November 21, 2017Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Noriaki Sugimoto, Katsutoshi Ihara, Takuya Hasaki
-
Publication number: 20160045961Abstract: An entry sheet of the present invention is used in cutting a fiber reinforced composite material and/or a metal. Moreover, in a cutting method of the present invention, cutting of a fiber reinforced composite material and/or a metal is performed using the entry sheet.Type: ApplicationFiled: March 27, 2014Publication date: February 18, 2016Inventors: Noritsugu Umehara, Takayuki Tokoroyama, Yousuke Matsuyama, Takuya Hasaki
-
Patent number: 9211592Abstract: A lubricant sheet suitable for use in a process of drilling a laminate or a plastic board, comprising a metal foil or an organic film, and a lubricant resin composition layer or a primer layer and the lubricant resin composition layer, the lubricant resin composition layer or the primer layer and the lubricant resin composition layer being formed on at least one surface of the metal foil or the organic film, wherein at least one layer of the primer layer and the lubricant resin composition layer contains a colorant, and a drilling method using the above lubricant sheet.Type: GrantFiled: March 10, 2008Date of Patent: December 15, 2015Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Nobuyuki Ikeguchi, Takuya Hasaki, Shinya Komatsu, Toshihiko Kobayashi, Mitsuo Ejiri
-
Publication number: 20150125228Abstract: Provided is an entry sheet for drilling that, compared with a conventional entry sheet for drilling, has better hole position accuracy, can suppress drill bit breakage, and exhibits less processing chips wrapping around the drill bit. This entry sheet for drilling includes a metallic support foil and a layer comprising a resin composition that is formed on at least one surface of the metallic support foil, wherein the resin composition contains a cellulose derivative (A) and a water-soluble resin (B), the cellulose derivative (A) includes a hydroxyalkyl cellulose and/or a carboxyalkyl cellulose having a weight average molecular weight of 20,000 to 350,000, and based on 100 parts by mass of the resin composition, the content of the cellulose derivative (A) is 5 to 40 parts by mass and the content of the water-soluble resin (B) is 60 to 95 parts by mass.Type: ApplicationFiled: March 21, 2013Publication date: May 7, 2015Applicant: Mitsubishi Gas Chemical Company Inc.Inventors: Noriaki Sugimoto, Katsutoshi Ihara, Takuya Hasaki
-
Publication number: 20150111049Abstract: The present invention relates to an entry sheet for drilling use, which exhibits excellent hole position accuracy even when transported at ambient temperature for a long time and/or stored under a thermal environment having a higher temperature than in Japan, more specifically to an entry sheet for drilling use for a laminated board or a multi-layered board comprising a metallic support foil and a layer of water-soluble resin composition formed on at least one surface of the metallic support foil, wherein the water-soluble resin composition comprises a water-soluble resin, a water-soluble lubricant and a linear unsaturated fatty acid salt, the layer of water-soluble resin composition is formed by cooling from a cooling start temperature of 120° C. to 160° C. to a cooling end temperature of 25° C. to 40° C. within 60 seconds at a cooling rate of not less than 1.5° C./sec, the water-soluble resin composition has a degree of crystallinity of not less than 1.Type: ApplicationFiled: March 5, 2013Publication date: April 23, 2015Inventors: Yousuke Matsuyama, Takuya Hasaki
-
Publication number: 20150072122Abstract: The present invention provides an entry sheet for drilling excellent in hole position accuracy compared with the conventional entry sheet for drilling. Such an entry sheet for drilling is an entry sheet for drilling comprising metallic support foil and a layer comprising a resin composition formed on at least one surface of the metallic support foil, in which the resin composition contains a resin and 70 parts by mass to 130 parts by mass of molybdenum disulfide based on 100 parts by mass of the resin, and the layer comprising the resin composition has a thickness in a range from 0.02 to 0.3 mm.Type: ApplicationFiled: March 22, 2013Publication date: March 12, 2015Inventors: Takayuki Kamei, Yousuke Matsuyama, Takuya Hasaki
-
Publication number: 20100167041Abstract: A process for the production of an entry sheet for drilling a printed wiring board material, which process comprises forming a multi-layered water-soluble resin composition layer on at least one surface of a metal foil, wherein an aqueous solution of a water-soluble resin composition is applied to the metal foil, dried and solidified to form one water-soluble resin composition layer, the application, drying and solidification of the aqueous solution of the water-soluble resin composition are repeated at least once to form at least one water-soluble resin composition layer on the above one water-soluble resin composition layer, the multi-layered water-soluble resin composition layer is composed of these water-soluble resin composition layers, the multi-layered water-soluble resin composition layer has a thickness of at least 50 ?m and is almost free from air bubbles, and an entry sheet for drilling a printed wiring board material obtained by the above process.Type: ApplicationFiled: June 24, 2009Publication date: July 1, 2010Inventors: Yousuke Matsuyama, Reiki Akita, Takuya Hasaki
-
Patent number: 7641934Abstract: There are provided a process for the production of an entry sheet for drilling, comprising preparing a water-soluble resin composition solution by using a mixed solvent containing water and isopropyl alcohol in a specific ratio as a solvent of a water-soluble resin composition, then applying the solution to a sheet-like base material and drying the resultant base material to form a resin layer on the base material, and a method of drilling a printed wiring board material using the above entry sheet. According to the present invention, the problems of remaining bubbles in the resin layer and a decrease in surface flatness and smoothness due to the occurrence of a ridge, which are caused because the melting point of the water-soluble resin is lower than the boiling point of water, are overcome, and an entry sheet for drilling excellent in hole position accuracy is provided.Type: GrantFiled: May 29, 2007Date of Patent: January 5, 2010Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Reiki Akita, Shinya Komatsu, Takuya Hasaki
-
Publication number: 20080166565Abstract: A lubricant sheet suitable for use in a process of drilling a laminate or a plastic board, comprising a metal foil or an organic film, and a lubricant resin composition layer or a primer layer and the lubricant resin composition layer, the lubricant resin composition layer or the primer layer and the lubricant resin composition layer being formed on at least one surface of the metal foil or the organic film, wherein at least one layer of the primer layer and the lubricant resin composition layer contains a colorant, and a drilling method using the above lubricant sheet.Type: ApplicationFiled: March 10, 2008Publication date: July 10, 2008Inventors: Nobuyuki Ikeguchi, Takuya Hasaki, Shinya Komatsu, Toshihiko Kobayashi, Mitsuo Ejiri
-
Publication number: 20070281181Abstract: There are provided a process for the production of an entry sheet for drilling, comprising preparing a water-soluble resin composition solution by using a mixed solvent containing water and isopropyl alcohol in a specific ratio as a solvent of a water-soluble resin composition, then applying the solution to a sheet-like base material and drying the resultant base material to form a resin layer on the base material, and a method of drilling a printed wiring board material using the above entry sheet. According to the present invention, the problems of remaining bubbles in the resin layer and a decrease in surface flatness and smoothness due to the occurrence of a ridge, which are caused because the melting point of the water-soluble resin is lower than the boiling point of water, are overcome, and an entry sheet for drilling excellent in hole position accuracy is provided.Type: ApplicationFiled: May 29, 2007Publication date: December 6, 2007Inventors: Reiki Akita, Shinya Komatsu, Takuya Hasaki
-
Patent number: 6866450Abstract: An entry sheet for drilling for a printed wiring board material, which comprises a water-soluble resin (A) and a water-insoluble lubricant (B) as essential components, an entry sheet for drilling for a printed wiring board material, which sheet comprises a metal foil having a thickness of 5 to 200 ?m and a thermosetting resin (E) layer having an average thickness of 1 to 10 ?m, the thermosetting resin (E) layer being formed on one surface of the metal foil, and a method for drilling a hole by using the above entry sheet.Type: GrantFiled: October 24, 2002Date of Patent: March 15, 2005Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takuya Hasaki, Shinya Komatsu, Norio Nagai
-
Publication number: 20050003169Abstract: A lubricant sheet suitable for use in a process of drilling a laminate or a plastic board, comprising a metal foil or an organic film, and a lubricant resin composition layer or a primer layer and the lubricant resin composition layer, the lubricant resin composition layer or the primer layer and the lubricant resin composition layer being formed on at least one surface of the metal foil or the organic film, wherein at least one layer of the primer layer and the lubricant resin composition layer contains a colorant, and a drilling method using the above lubricant sheet.Type: ApplicationFiled: July 8, 2004Publication date: January 6, 2005Inventors: Nobuyuki Ikeguchi, Takuya Hasaki, Shinya Komatsu, Toshihiko Kobayashi, Mitsuo Ejiri
-
Publication number: 20030100456Abstract: An entry sheet for drilling for a printed wiring board material, which comprises a water-soluble resin (A) and a water-insoluble lubricant (B) as essential components,Type: ApplicationFiled: October 24, 2002Publication date: May 29, 2003Inventors: Takuya Hasaki, Shinya Komatsu, Norio Nagai
-
Patent number: 5457174Abstract: A process for preparing a polycarbonate which comprises performing a transesterification and a polycondensation reaction with a diarylcarbonate and dihydroxyaryl compound, in a reaction apparatus composed of stainless steel comprising at least 12% by weight of Ni, and at least 22% by weight of Cr, and having Fe as the remaining main component. A polycarbonate which has a good color, is stable to hydrolysis and resistant to heat-yellowing is the resulting product.Type: GrantFiled: July 21, 1994Date of Patent: October 10, 1995Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Katsushige Hayashi, Mitsuhiko Masumoto, Masayuki Nakajima, Takuya Hasaki, Masahiko Ishikawa, Atsushi Hirashima