Patents by Inventor Shotaro Shimizu
Shotaro Shimizu 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: 11939499Abstract: Provided is a laminated film for a foldable display, the laminated film being free of occurrence of a fold mark or a crack at a folding portion thereof, in order to provide, for example, a foldable display excellent in mass productivity, and free of a risk of causing distortion in an image displayed at a folding portion thereof after being repeatedly folded. The laminated film for a foldable display includes: a polyester film having a thickness of from 10 ?m to 100 ?m; and an adhesive layer formed on at least one surface of the polyester film, wherein the polyester film satisfies the following conditions: (1) a refractive index in a bending direction is from 1.590 to 1.620; (2) a refractive index in a folding portion direction is from 1.670 to 1.700; (3) a refractive index in a thickness direction is 1.520 or less; and (4) a density is 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to a folding portion of the polyester film at a time when the polyester film is folded.Type: GrantFiled: May 14, 2020Date of Patent: March 26, 2024Assignee: TOYOBO CO., LTD.Inventors: Shotaro Nishio, Kiwamu Kawai, Akira Shimizu
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Patent number: 11934226Abstract: Provided is a foldable display that is excellent in mass production applicability and unlikely to have image distortion at the folding portion of the display after repeated folding, as well as a mobile device equipped therewith. The foldable display contains a surface protection film and a polarizer. The surface protection film is composed of a polyester film, and the angle made by the slow axis of the polyester film with the absorption axis of the polarizer is 10 to 80°. The polyester film has a refractive index in the bending direction of 1.590 to 1.620, a refractive index in the direction of a folding portion of 1.670 to 1.700, a refractive index in the thickness direction of 1.520 or less, and a density of 1.380 g/cm3 or more, wherein the bending direction refers to a direction orthogonal to the folding portion of the polyester film to be folded.Type: GrantFiled: January 15, 2020Date of Patent: March 19, 2024Assignee: TOYOBO CO., LTD.Inventors: Shotaro Nishio, Kiwamu Kawai, Akira Shimizu, Katsuya Ito
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Patent number: 11926720Abstract: Provided is a polyester film for a touchscreen module substrate of a foldable display which is free of occurrence of a crack at a folding portion thereof, in order to provide a foldable display excellent in mass productivity, and free of a risk of causing distortion in an image displayed at a folding portion thereof after being repeatedly folded. The polyester film for a touchscreen module substrate of a foldable display satisfies the following conditions: (1) a refractive index in a bending direction is from 1.590 to 1.620; (2) a refractive index in a folding portion direction is from 1.670 to 1.700; (3) a refractive index in a thickness direction is 1.520 or less; and (4) a density is 1.380 g/cm or more, wherein the bending direction refers to a direction orthogonal to a folding portion of the polyester film at a time when the polyester film is folded.Type: GrantFiled: May 14, 2020Date of Patent: March 12, 2024Assignee: TOYOBO CO., LTD.Inventors: Shotaro Nishio, Kiwamu Kawai, Akira Shimizu
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Patent number: 5511587Abstract: A diamond-like carbon (DLC) film is formed on a portion of a reed blade in a high-speed loom which requires the highest wear resistance. When a stainless steel is used as the base material of the reed blade, the DLC film is formed through an intermediate layer comprising, e.g., a titanium carbide layer. Reed blades coated with a DLC film are arranged at the side portions of the reed where wear progresses quickly, while reed blades coated with hard films requiring a relatively low cost, or non-coated reed blades, are arranged in the central portion of the reed, thereby uniforming the blade wear throughout the entire reed. The reed is suitable to many types of fibers, ranging from natural to synthetic and new material fibers.Type: GrantFiled: April 19, 1995Date of Patent: April 30, 1996Assignee: Citizen Watch Co., Ltd.Inventors: Yukio Miya, Shigeru Kizaki, Osamu Sugiyama, Akiteru Hatayama, Yoshitsugu Shibuya, Mitsugu Enomoto, Koichi Naoi, Yuji Fukazawa, Takanori Nanya, Shotaro Shimizu, Hiroshi Tagawa
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Patent number: 4853048Abstract: A permanent magnetic alloy mainly composed of gold for making magnetic personal ornaments comprises 50 to 75 weight % gold, 12 to 40 weight % palladium and 3 to 15 weight % cobalt. The alloy is gold or white gold in color and can be plastically deformed to a desired shape. The 12, 14 and 18 Karat gold alloys have maximum energy products of 3.0, 2.2 and 0.9 MGOe, respectively.Type: GrantFiled: January 29, 1988Date of Patent: August 1, 1989Assignee: Citizen Watch Co., Ltd.Inventors: Shotaro Shimizu, Yosuke Sakakibara
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Patent number: 4480010Abstract: By use of an ion plating apparatus having an ionizing means which can be operated independently of the electric potential of a substrate, at the initial and final stages of the process of ion plating, a negative potential relative to that of a vapor source is applied to the substrate in order to facilitate the bombardment effect and at the intermediate stage of the process, the potential of the substrate is left floating while the ionization means is being driven in order to control the bombardment effect. In a preferred example, the apparatus has thermoelectron emitting filaments located near the substrate and a pair of anodes located on the side of the vapor source with respect to the substrate and on the opposite side of the substrate. This process permits producing relatively thick and adherent coatings.Type: GrantFiled: May 25, 1983Date of Patent: October 30, 1984Assignee: Citizen Watch Co., Ltd.Inventors: Yasutomo Sasanuma, Masao Koshi, Teruaki Takahashi, Shotaro Shimizu, Mitsugu Enomoto, Youji Yoshikawa
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Patent number: 4160241Abstract: An electrochromic display device comprising a plurality of segment electrodes which are selectively driven by a driving circuit via a plurality of lead members so as to display patterns of uniform density. Each of the segment electrodes is designed such that their areas are substantially uniform. In addition, for those segment electrodes which differ in size, the output impedence of the driving circuit is adjusted. Moreover, the electrical resistance of each lead member is substantially equalized and the drive is controlled in proportion to the number of segment electrodes driven simultaneously.Type: GrantFiled: April 19, 1977Date of Patent: July 3, 1979Assignee: Citizen Watch Co., Ltd.Inventors: Shotaro Shimizu, Toyoharu Fujikawa
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Patent number: 4147416Abstract: An electrochromic display device which includes a transparent front substrate, at least one transparent display electrode formed on the front substrate, a counter substrate parallel to the front substrate, at least one display electrode provided on the counter substrate adjacent the display electrode on the front substrate, a spacer which maintains the front and counter substrate parallel to each other, a transparent electrolyte which is enclosed between the front and counter substrates and which is in contact with the front and counter substrates and which contains electrochromic material, a counter electrode which is in contact with the electrolyte and a means for selectively applying voltage between the counter electrode and the display electrodes.Type: GrantFiled: March 30, 1977Date of Patent: April 3, 1979Assignee: Citizen Watch Co., Ltd.Inventor: Shotaro Shimizu