Patents by Inventor Shigeru Nakanishi
Shigeru Nakanishi 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: 20240128716Abstract: To detect deterioration of an SOA and perform feedback control to keep light intensity of output light constant in a configuration in which a DFB laser, an EA modulator, and the SOA are monolithically integrated. A semiconductor optical integrated element includes: a DFB laser that outputs continuous light; an EA modulator that modulates the continuous light; a first multimode interference coupler that inputs the modulated light from a first input port, divides the modulated light, and outputs the divided modulated light from two or more output ports; semiconductor optical amplifiers that are connected to respective output ports of the first multimode interference coupler and amplify each of the divided modulated light; a second multimode interference coupler that has input ports connected to respective outputs of the semiconductor optical amplifiers, multiplexes the amplified modulated light, and outputs the multiplexed modulated light from a first output port; and a monitoring waveguide.Type: ApplicationFiled: March 23, 2021Publication date: April 18, 2024Inventors: Yasuhiko Nakanishi, Takahiko Shindo, Shigeru Kanazawa, Meishin Chin, Yasuaki Hashizume
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Publication number: 20240106544Abstract: An optical transmitter that multiplexes and outputs a plurality of wavelength channels includes: a first light source; at least one second light source having a different wavelength from the first light source, the at least one second light source each having a different wavelength; an optical multiplexer that causes an output light beam from the first light source to be transmitted from a first end surface to a second end surface facing the first end surface, causes the output light beam from the first light source to be reflected by a reflecting mirror formed on the second end surface, causes an output light beam from the second light source to pass through a wavelength filter formed on the first end surface, causes the optical light beam from the second light source to be reflected by the reflecting mirror, and causes output light beams of the respective wavelength channels to reciprocate between the reflecting mirror and the wavelength filter, to sequentially multiplex the output light beams of the respecType: ApplicationFiled: January 7, 2021Publication date: March 28, 2024Inventors: Shigeru Kanazawa, Yasuhiko Nakanishi, Takahiko Shindo, Meishin Chin
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Patent number: 10076106Abstract: A yarn which contains a composite yarn composed of a core part containing a short fiber and a sheath part containing a synthetic fiber filament yarn, the core part and the sheath part being integrated via fluff of the short fiber getting between or entangled with the long fibers, the specific gravity of the yarn being adjustable in the range of 1.0 or more, a fishing line containing the yarn, and a method for producing the fishing line. The present invention provides an ideal fishing line which has a strong core-sheath structure, does not allow separation or detachment of the core part and the sheath part, is easy to handle, and also is excellent in strength, weatherability, and water resistance.Type: GrantFiled: August 30, 2016Date of Patent: September 18, 2018Assignee: Y. G. K CO., LTD.Inventor: Shigeru Nakanishi
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Patent number: 9986726Abstract: A yarn which contains a composite yarn composed of a core part containing a short fiber and a sheath part containing a synthetic fiber filament yarn, the core part and the sheath part being integrated via fluff of the short fiber getting between or entangled with the long fibers, the specific gravity of the yarn being adjustable in the range of 1.0 or more, a fishing line containing the yarn, and a method for producing the fishing line. The present invention provides an ideal fishing line which has a strong core-sheath structure, does not allow separation or detachment of the core part and the sheath part, is easy to handle, and also is excellent in strength, weatherability, and water resistance.Type: GrantFiled: March 2, 2009Date of Patent: June 5, 2018Assignee: Y. G. K Co., Ltd.Inventor: Shigeru Nakanishi
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Patent number: 9756839Abstract: The present invention provides a fishing line comprising a composite yarn having a core-sheath structure, where the composite yarn comprises a core part having a core yarn containing a short fiber and a sheath part having a sheath yarn containing a long fiber; the long fiber in the sheath part and the short fiber in the core part are intertangled with each other; and the core yarn and the sheath yarn are integrated with use of an adhesive resin. The fishing line of the present invention has a robust core-sheath structure which prevents nude yarn or nep from being developed, excellent operability, adjustable specific gravity, excellent tensile strength, high weatherability and water resistance, low water content, low elongation rate, and low probability of unraveling constituent fibers at a cut site.Type: GrantFiled: October 6, 2014Date of Patent: September 12, 2017Assignee: Y.G.K. CO., LTD.Inventor: Shigeru Nakanishi
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Patent number: 9593436Abstract: A process for producing a tapered multifilament yarn comprising feeding a drawable filament to a drawing apparatus and changing the take-over speed relative to the feed speed of the filament in order to change the thickness of the filament in a longitudinal direction, characterized by making the take-over speed slower than the feed speed under heating in a part of the filament in the longitudinal direction and thereby shrinking and thickening the part of the filament. According to the process, the ratio of the thickness of the thickest part of the tapered multifilament yarn to the thickness of the thinnest part thereof can be easily increased.Type: GrantFiled: December 28, 2006Date of Patent: March 14, 2017Assignee: YOZ-AMI CORPORATIONInventor: Shigeru Nakanishi
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Publication number: 20160366867Abstract: A yarn which contains a composite yarn composed of a core part containing a short fiber and a sheath part containing a synthetic fiber filament yarn, the core part and the sheath part being integrated via fluff of the short fiber getting between or entangled with the long fibers, the specific gravity of the yarn being adjustable in the range of 1.0 or more, a fishing line containing the yarn, and a method for producing the fishing line. The present invention provides an ideal fishing line which has a strong core-sheath structure, does not allow separation or detachment of the core part and the sheath part, is easy to handle, and also is excellent in strength, weatherability, and water resistance.Type: ApplicationFiled: August 30, 2016Publication date: December 22, 2016Applicant: Y.G.K CO., LTD.Inventor: Shigeru NAKANISHI
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Publication number: 20150020435Abstract: The present invention provides a fishing line comprising a composite yarn having a core-sheath structure, where the composite yarn comprises a core part having a core yarn containing a short fiber and a sheath part having a sheath yarn containing a long fiber; the long fiber in the sheath part and the short fiber in the core part are intertangled with each other; and the core yarn and the sheath yarn are integrated with use of an adhesive resin. The fishing line of the present invention has a robust core-sheath structure which prevents nude yarn or nep from being developed, excellent operability, adjustable specific gravity, excellent tensile strength, high weatherability and water resistance, low water content, low elongation rate, and low probability of unraveling constituent fibers at a cut site.Type: ApplicationFiled: October 6, 2014Publication date: January 22, 2015Inventor: Shigeru NAKANISHI
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Patent number: 8832992Abstract: A yarn object which, even though made of ultra-high-molecular-weight polyethylene, can be satisfactorily prevented from color fading caused by contact with other objects or the like, can be produced easily at low cast, and can maintain high strength. The yarn object is colored with a colorant. The yarn object includes a core yarn 2 colored with a predetermined colorant and an outer-layer yarn 3 disposed on the periphery of the core yarn. The outer-layer yarn 3 is disposed in such a manner that the core yarn 2 is prevented from contacting with other objects. The outer-layer yarn 3 includes a transparent filament and a space 4 is formed between the outer-layer yarns 3. The color applied to the core yarn 2 is externally visible through the transparent outer-layer yarn 3 and the space therebetween 4.Type: GrantFiled: November 29, 2011Date of Patent: September 16, 2014Assignee: Yoz-Ami CorporationInventor: Shigeru Nakanishi
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Patent number: 8522473Abstract: A yarn object which, even though made of ultra-high-molecular-weight polyethylene, can be satisfactorily prevented from color fading caused by contact with other objects or the like, can be produced easily at low cast, and can maintain high strength. The yarn object is colored with a colorant. The yarn object includes a core yarn 2 colored with a predetermined colorant and an outer-layer yarn 3 disposed on the periphery of the core yarn. The outer-layer yarn 3 is disposed in such a manner that the core yarn 2 is prevented from contacting with other objects. The outer-layer yarn 3 includes a transparent filament and a space 4 is formed between the outer-layer yarns 3. The color applied to the core yarn 2 is externally visible through the transparent outer-layer yarn 3 and the space therebetween 4.Type: GrantFiled: December 28, 2006Date of Patent: September 3, 2013Assignee: Yoz-Ami CorporationInventor: Shigeru Nakanishi
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Publication number: 20120070662Abstract: A yarn object which, even though made of ultra-high-molecular-weight polyethylene, can be satisfactorily prevented from color fading caused by contact with other objects or the like, can be produced easily at low cast, and can maintain high strength. The yarn object is colored with a colorant. The yarn object includes a core yarn 2 colored with a predetermined colorant and an outer-layer yarn 3 disposed on the periphery of the core yarn. The outer-layer yarn 3 is disposed in such a manner that the core yarn 2 is prevented from contacting with other objects. The outer-layer yarn 3 includes a transparent filament and a space 4 is formed between the outer-layer yarns 3. The color applied to the core yarn 2 is externally visible through the transparent outer-layer yarn 3 and the space therebetween 4.Type: ApplicationFiled: November 29, 2011Publication date: March 22, 2012Inventor: Shigeru NAKANISHI
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Publication number: 20110173873Abstract: The present invention provides a fishing line comprising a composite yarn having a core-sheath structure, where the composite yarn comprises a core part having a core yarn containing a short fiber and a sheath part having a sheath yarn containing a long fiber; the long fiber in the sheath part and the short fiber in the core part are intertangled with each other; and the core yarn and the sheath yarn are integrated with use of an adhesive resin. The fishing line of the present invention has a robust core-sheath structure which prevents nude yarn or nep from being developed, excellent operability, adjustable specific gravity, excellent tensile strength, high weatherability and water resistance, low water content, low elongation rate, and low probability of unravelling constituent fibers at a cut site.Type: ApplicationFiled: October 13, 2009Publication date: July 21, 2011Inventor: Shigeru Nakanishi
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Publication number: 20110020645Abstract: The present invention provides a yarn comprising a composite yarn composed of a core part comprising a short fiber and a sheath part comprising a synthetic fiber filament yarn, the core part and the sheath part being integrated via fluff of the short fiber getting between or entangled with the long fibers, the specific gravity of the yarn being adjustable in the range of 1.0 or more, a fishing line comprising the yarn, and a method for producing the fishing line. The present invention provides an ideal fishing line which has a strong core-sheath structure, does not allow separation or detachment of the core part and the sheath part, is easy to handle, and also is excellent in strength, weatherability, and water resistance.Type: ApplicationFiled: March 2, 2009Publication date: January 27, 2011Applicant: Y.G.K CO., LTD.Inventor: Shigeru Nakanishi
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Publication number: 20100229456Abstract: A yarn object which, even though made of ultra-high-molecular-weight polyethylene, can be satisfactorily prevented from color fading caused by contact with other objects or the like, can be produced easily at low cast, and can maintain high strength. The yarn object is colored with a colorant. The yarn object includes a core yarn 2 colored with a predetermined colorant and an outer-layer yarn 3 disposed on the periphery of the core yarn. The outer-layer yarn 3 is disposed in such a manner that the core yarn 2 is prevented from contacting with other objects. The outer-layer yarn 3 includes a transparent filament and a space 4 is formed between the outer-layer yarns 3. The color applied to the core yarn 2 is externally visible through the transparent outer-layer yarn 3 and the space therebetween 4.Type: ApplicationFiled: December 28, 2006Publication date: September 16, 2010Inventor: Shigeru Nakanishi
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Publication number: 20100098948Abstract: A composite yarn comprising an ultra-high-molecular-weight-polyethylene filament and an additional synthetic resin filament, at least a part of which comprises a light storage agent. The composite yarn has both visibility in a dark place and properties necessary for a fishing line or other yarns made of an ultra high molecular weight polyethylene filament.Type: ApplicationFiled: January 22, 2008Publication date: April 22, 2010Applicant: Y. G. K CO., LTD.Inventor: Shigeru Nakanishi
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Publication number: 20090286080Abstract: A method of manufacturing autohesion thread such that a smooth surface is offered, the cutting thereof is easy, filaments composing thread are not frayed in cutting, drainability is superior, and plural kinds of filaments can be combined. A method of manufacturing a line of fusion thread, wherein plural filaments comprising thermoplastic resin are paralleled, twisted and/or braided if desired, subsequently drawn under heat at a draw ratio of less than 1.0 to thereby substantially fuse the adjacent filaments, and thereafter drawn under heat at a draw ratio of more than 1.0.Type: ApplicationFiled: July 29, 2009Publication date: November 19, 2009Inventor: Shigeru NAKANISHI
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Patent number: 7584596Abstract: A method of manufacturing autohesion thread such that a smooth surface is offered, the cutting thereof is easy, filaments composing thread are not frayed in cutting, drainability is superior, and plural kinds of filaments can be combined. A method of manufacturing a line of fusion thread, wherein plural filaments comprising thermoplastic resin are paralleled, twisted and/or braided if desired, subsequently drawn under heat at a draw ratio of less than 1.0 to thereby substantially fuse the adjacent filaments, and thereafter drawn under heat at a draw ratio of more than 1.0.Type: GrantFiled: January 13, 2006Date of Patent: September 8, 2009Assignee: Yoz-Ami CorporationInventor: Shigeru Nakanishi
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Publication number: 20090158563Abstract: A process for producing a tapered multifilament yarn comprising feeding a drawable filament to a drawing apparatus and changing the take-over speed relative to the feed speed of the filament in order to change the thickness of the filament in a longitudinal direction, characterized by making the take-over speed slower than the feed speed under heating in a part of the filament in the longitudinal direction and thereby shrinking and thickening the part of the filament. According to the process, the ratio of the thickness of the thickest part of the tapered multifilament yarn to the thickness of the thinnest part thereof can be easily increased.Type: ApplicationFiled: December 28, 2006Publication date: June 25, 2009Applicant: YOZ-AMI CORPORATIONInventor: Shigeru Nakanishi
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Publication number: 20060174536Abstract: An object of the present invention is to provide a method of manufacturing autohesion thread such that a smooth surface is offered, the cutting thereof is easy, filaments composing thread are not frayed in cutting, and additionally drainability are superior, and then plural kinds of filaments can be combined. The invention provides a method of manufacturing a line of fusion thread characterized in that plural filaments comprising thermoplastic resin are paralleled, twisted and/or braided if desired, and subsequently drawn under heating at a draw ratio of less than 1.0 to thereby substantially fuse the adjacent filaments to be subsequently drawn under heating at a draw ratio of more than 1.0.Type: ApplicationFiled: January 13, 2006Publication date: August 10, 2006Inventor: Shigeru Nakanishi
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Patent number: 7081298Abstract: This invention is to provide yarns including fishing lines which contain ultra-high molecular weight polyethylene filaments with low elongation rate, adjustable specific gravity and excellent abrasion resistance, and to provide a method for manufacturing the same.Type: GrantFiled: October 10, 2002Date of Patent: July 25, 2006Assignee: Yoz-Ami CorporationInventor: Shigeru Nakanishi