Nakajima, Gunma
Hitoshi Nakajima, Gunma JP
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20130272669 | OPTICAL FIBER - An optical fiber comprising a first core, a second core, a third core, and a cladding, wherein with a refractive index of the cladding as a reference, Δ1 is a maximum value of a relative refractive index difference of the first core, Δ2 is a maximum value of a relative refractive index difference of the second core, Δ3 is a minimum value of a relative refractive index difference of the third core, “a” is a half-value radial width for the relative refractive index difference (Δ1−Δ2) of the first core, “b” is a radius of a second core/third core boundary, and “c” is a radius of a third core/cladding boundary, the expressions 0.30%≦Δ1≦0.45%, −0.05%≦Δ2≦0.05%, −0.6%≦Δ3≦−0.3%, 2.85≦b/a, 10 μm≦b≦15 μm, and 3 μm≦c−b≦5.5 μm are satisfied, and transmission loss for a wavelength of 1550 nm when the optical fiber is wound around a mandrel with a diameter of 10 mm is no greater than 0.2 dB/turn. | 10-17-2013 |
20150040616 | OPTICAL FIBER GLASS BASE MATERIAL MANUFACTURING METHOD AND OPTICAL FIBER GLASS BASE MATERIAL - Provided is an optical fiber glass base material manufacturing method that includes flame polishing an outside of a starting base material that includes a core and a first cladding with an oxyhydrogen flame and then arranging a glass fine particle synthesis burner facing the starting base material, which rotates, moving the starting base material and the burner back and forth relative to each other along the starting base material, and depositing glass fine particles produced by hydrolysis of glass raw material in the oxyhydrogen flame as a porous glass layer of a second cladding, the method comprising synthesizing and depositing the glass fine particles under conditions in which a hydrogen flow rate during a first back and forth deposition pass performed immediately after supply of raw material is started is greater than a normal hydrogen flow rate. | 02-12-2015 |
Kazuya Nakajima, Gunma JP
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20090219948 | CONNECTION ADAPTER FOR COMMUNICATION DEVICE - When a connection adapter | 09-03-2009 |
20090219950 | CONNECTION ADAPTER FOR COMMUNICATION DEVICE - A communication equipment connection adapter | 09-03-2009 |
Koji Nakajima, Gunma JP
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20110293945 | VINYLIDENE FLUORIDE RESIN FILM - Provided is a vinylidene fluoride resin film that has good adhesiveness to a base material, achieves good dispersivity even when a pigment is contained in large amounts, and has excellent thermal stability during a forming process. | 12-01-2011 |
Nobuyuki Nakajima, Gunma JP
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20090038545 | Liquid applicator - The present invention provides a liquid applicator which enables easy application of an application liquid even if it is high in viscosity and which can protect the application liquid held therein against the contamination by microbes etc. from the external air and the outside, and includes a liquid pressing means | 02-12-2009 |
20090116895 | Cosmetic Storage Type Applicator - In the cosmetic storage type applicator having a structure for supplying a cosmetic to an applying part | 05-07-2009 |
20090317164 | Applicator, and container for application substance - An applicator of application substances, which can be repeatedly used and can be mounted on various containers, is provided. An applicator | 12-24-2009 |