Katsuji Sakamoto

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical fiber characteristic measuring method and apparatus
- Patent number 4,676,635
- Issue date Jun 30, 1987
- Sumitomo Electric Industries, Ltd.
- Katsuji Sakamoto
- G01 - MEASURING TESTING
Information Patent Grant
Wire accumulator
- Patent number 4,641,794
- Issue date Feb 10, 1987
- Sumitomo Electric Industries, Ltd.
- Takashi Yamazaki
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Tape winding apparatus
- Patent number 4,628,675
- Issue date Dec 16, 1986
- Sumitomo Electric Industries, Ltd.
- Katsuji Sakamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Wire-like structure twisting machine
- Patent number 4,549,391
- Issue date Oct 29, 1985
- Sumitomo Electric Industries, Ltd.
- Yuichi Toda
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Apparatus for stranding optical fiber cores while slackening them
- Patent number 4,450,676
- Issue date May 29, 1984
- Sumitomo Electric Industries, Ltd.
- Katsuji Sakamoto
- G02 - OPTICS
Information Patent Grant
Device for transmitting energy through electric wire or optical cab...
- Patent number 4,379,615
- Issue date Apr 12, 1983
- Sumitomo Electric Industries, Ltd.
- Yuichi Toda
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL FIBER CUTTING DEVICE, OPTICAL FIBER CUTTING METHOD, AND OPT...
- Publication number 20100187276
- Publication date Jul 29, 2010
- Masaki Ohmura
- G02 - OPTICS