Patents by Inventor Toshio Nakao
Toshio Nakao 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).
-
Patent number: 7625194Abstract: A manufacturing apparatus is provided for manufacturing a tubular resin film of high quality and little thickness variations, which is stretched and given an orientation, and suitable as retardation film or the like. It comprises a stretching section (6) for stretching the tubular resin film (20), and a maintaining section (7) for maintaining a shape of said tubular resin film (20) stretched. Further, said stretching section (6) is arranged to apply a stretching force to said tubular resin film for longitudinally and/or circumferentially stretching said tubular resin film (20).Type: GrantFiled: December 24, 2003Date of Patent: December 1, 2009Assignee: Sumitomo Bakelite Company, Ltd.Inventors: Shingo Yoshida, Seigou Akazawa, Keiko Akazawa, legal representative, Toyotaro Maruyama, Takeshi Takeuchi, Shigeyoshi Furuhara, Masanori Ikenaga, Toshio Nakao
-
Publication number: 20090273125Abstract: A manufacturing apparatus and manufacturing method are provided for manufacturing stably from a thermoplastic resin a resin film product having a small and uniform thickness and smooth surfaces, which has been impossible with a conventional tube extruding method or and blown film extrusion method. It comprises a heating extruder (1) for extruding a molten thermoplastic resin in a tubular form, and a core unit (2) opposed to an inner surface of said thermoplastic resin extruded in the tubular form, and molding said thermoplastic resin to a tubular resin film (20) while exuding a gas to said inner surface. A stabilizing device (4) is disposed between a nozzle (3) of said heating extruder (1) and said core unit (2) for stabilizing a shape of said thermoplastic resin extruded in the tubular form.Type: ApplicationFiled: July 13, 2009Publication date: November 5, 2009Applicant: SUMITOMO BAKELITE CO., LTD.Inventors: Takeshi TAKEUCHI, Seigou Akazawa, Keiko Akazawa, Toyotaro Maruyama, Shingo Yoshida, Shigeyoshi Furuhara, Masanori Ikenaga, Toshio Nakao
-
Publication number: 20080272523Abstract: A manufacturing apparatus and manufacturing method are provided for manufacturing stably from a thermoplastic resin a resin film product having a small and uniform thickness and smooth surfaces, which has been impossible with a conventional tube extruding method or and blown film extrusion method. It comprises a heating extruder (1) for extruding a molten thermoplastic resin in a tubular form, and a core unit (2) opposed to an inner surface of said thermoplastic resin extruded in the tubular form, and molding said thermoplastic resin to a tubular resin film (20) while exuding a gas to said inner surface. A stabilizing device (4) is disposed between a nozzle (3) of said heating extruder (1) and said core unit (2) for stabilizing a shape of said thermoplastic resin extruded in the tubular form.Type: ApplicationFiled: July 8, 2008Publication date: November 6, 2008Inventors: Takeshi Takeuchi, Seigou Akazawa, Keiko Akazawa, Toyotaro Maruyama, Shingo Yoshida, Shigeyoshi Furuhara, Masanori Ikenaga, Toshio Nakao
-
Publication number: 20070219309Abstract: The object of the invention is to provide an optical material serving as a glass substitute, showing high light transmissivity in a broad wavelength range and capable of being adequately used in producing transparent sheets, optical lenses, liquid crystal display element plastic substrates, color filter substrates, organic EL display element plastic substrates, solar cell substrates, touch panels, optical elements, optical waveguides and LED sealants, among others, by using ordinary glass fillers. The above optical material can be obtained from a transparent composite composition which comprises a transparent resin and a glass filler and in which the transparent resin has an Abbe number of not smaller than 45.Type: ApplicationFiled: February 28, 2007Publication date: September 20, 2007Inventors: Sumio Shibahara, Wataru Oka, Yasuo Shimobe, Hiromitsu Kuramoto, Toshio Nakao
-
Publication number: 20060269642Abstract: A manufacturing apparatus is provided for manufacturing a tubular resin film of high quality and little thickness variations, which is stretched and given an orientation, and suitable as retardation film or the like. It comprises a stretching section (6) for stretching the tubular resin film (20), and a maintaining section (7) for maintaining a shape of said tubular resin film (20) stretched. Further, said stretching section (6) is arranged to apply a stretching force to said tubular resin film for longitudinally and/or circumferentially stretching said tubular resin film (20).Type: ApplicationFiled: December 24, 2003Publication date: November 30, 2006Inventors: Shingo Yoshida, Seigou Akazawa, Toyotaro Maruyama, Takeshi Takeuchi, Shigeyoshi Furuhara, Masanori Ikenaga, Toshio Nakao
-
Publication number: 20060240137Abstract: A manufacturing apparatus and manufacturing method are provided for manufacturing stably from a thermoplastic resin a resin film product having a small and uniform thickness and smooth surfaces, which has been impossible with a conventional tube extruding method or and blown film extrusion method. It comprises a heating extruder (1) for extruding a molten thermoplastic resin in a tubular form, and a core unit (2) opposed to an inner surface of said thermoplastic resin extruded in the tubular form, and molding said thermoplastic resin to a tubular resin film (20) while exuding a gas to said inner surface. A stabilizing device (4) is disposed between a nozzle (3) of said heating extruder (1) and said core unit (2) for stabilizing a shape of said thermoplastic resin extruded in the tubular form.Type: ApplicationFiled: December 24, 2003Publication date: October 26, 2006Inventors: Takeshi Takeuchi, Seigou Akazawa, Toyotaro Maruyama, Shingo Yoshida, Shigeyoshi Furuhara, Masanori Ikenaga, Toshio Nakao, Keiko Akazawa
-
Publication number: 20050203239Abstract: The object of the invention is to provide an optical material serving as a glass substitute, showing high light transmissivity in a broad wavelength range and capable of being adequately used in producing transparent sheets, optical lenses, liquid crystal display element plastic substrates, color filter substrates, organic EL display element plastic substrates, solar cell substrates, touch panels, optical elements, optical waveguides and LED sealants, among others, by using ordinary glass fillers. The above optical material can be obtained from a transparent composite composition which comprises a transparent resin and a glass filler and in which the transparent resin has an Abbe number of not smaller than 45.Type: ApplicationFiled: June 19, 2003Publication date: September 15, 2005Inventors: Sumio Shibahara, Wataru Oka, Yasuo Shimobe, Hiromitsu Kuramoto, Toshio Nakao
-
Patent number: 5671013Abstract: An apparatus for correcting a luminance level of a still picture obtains first and second images of the same object to produce two sets of pixels of image information. A boundary luminance level is set between the maximum and minimum luminance levels of the first image. A correspondent luminance level is determined as the luminance level of the pixels of the second image which correspond to those pixels of the first image having a luminance level equal to the boundary luminance level. A substitution correction value is determined for each pixel of the second image which corresponds with a pixel of the first image having a luminance level above or below the boundary luminance level. Each substitution correction value is a function of the boundary luminance level and the correspondent luminance level.Type: GrantFiled: October 28, 1992Date of Patent: September 23, 1997Assignee: Sony CorporationInventor: Toshio Nakao
-
Patent number: 5507903Abstract: There are provided a process for producing a two-layered tape for TAB, which comprises forming desired holes in a semi-cured polyamic acid film formed on a release film or in a semi-cured polyamic acid film subjected to stretching of 10% or more, then pressure-bonding the resulting film or film laminate to a conductor foil or a conductor foil on which a semi-cured light-transmittable polyamic acid film is formed, so that the polyamic acid film and the conductor foil contact with each other or the two polyamic acid films contact with each other, conducting imidization, and thereafter forming a desired pattern in the conductor foil; a process for producing a stretched polyamic acid film by subjecting a polyamic acid film to stretching of 10% or more; and a process for producing a flexible base board for printed circuit or a flexible printed circuit board with a cover layer, both using said stretched polyamic acid film.Type: GrantFiled: January 12, 1994Date of Patent: April 16, 1996Assignee: Sumitomo Bakelite Company LimitedInventors: Yoshiyuki Yamamori, Shinichi Mikami, Toshio Nakao, Takuya Tochimoto, Etsu Takeuchi