Katsubumi Nagasu

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Patents Grantslast 30 patents

Information Patent Grant
Manufacturing method of optical fiber preform
- Patent number 10,995,030
- Issue date May 4, 2021
- Fujikura Ltd.
- Katsubumi Nagasu
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Optical fiber and method for manufacturing same
- Patent number 10,578,796
- Issue date Mar 3, 2020
- Fujikura Ltd.
- Katsubumi Nagasu
- G02 - OPTICS
Information Patent Grant
Magnetic device
- Patent number 7,782,049
- Issue date Aug 24, 2010
- Fujikura Ltd.
- Kazuhisa Itoi
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic device
- Patent number 7,772,841
- Issue date Aug 10, 2010
- Fujikura Ltd.
- Kazuhisa Itoi
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
MANUFACTURING METHOD OF OPTICAL FIBER PREFORM
- Publication number 20190248695
- Publication date Aug 15, 2019
- FUJIKURA LTD.
- Katsubumi Nagasu
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
OPTICAL FIBER AND METHOD FOR MANUFACTURING SAME
- Publication number 20190113678
- Publication date Apr 18, 2019
- FUJIKURA LTD.
- Katsubumi Nagasu
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER PREFORM, OPTICAL FIBER, AND METHOD OF MANUFACTURING O...
- Publication number 20170285259
- Publication date Oct 5, 2017
- FUJIKURA LTD.
- Katsubumi Nagasu
- G02 - OPTICS
Information Patent Application
MAGNETIC DEVICE
- Publication number 20100109663
- Publication date May 6, 2010
- FUJIKURA LTD.
- Kazuhisa ITOI
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC SENSOR MODULE AND PISTON POSITION DETECTOR
- Publication number 20100090692
- Publication date Apr 15, 2010
- Fujikura Ltd.
- Kazuhisa Itoi
- G01 - MEASURING TESTING
Information Patent Application
MAGNETIC DEVICE
- Publication number 20090066326
- Publication date Mar 12, 2009
- FUJIKURA LTD.
- Kazuhisa ITOI
- G01 - MEASURING TESTING
Information Patent Application
Apparatus for manufacturing porous glass preform for optical fiber
- Publication number 20050155390
- Publication date Jul 21, 2005
- FUJIKURA LTD.
- Katsubumi Nagasu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...