Kohoku Kogyo Co, Ltd

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Nagahama-Shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Slope gain equalizer
- Patent number 11,835,766
- Issue date Dec 5, 2023
- KOHOKU KOGYO CO., LTD.
- Toshihisa Okubo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Interference filter module
- Patent number 11,598,908
- Issue date Mar 7, 2023
- KOHOKU KOGYO CO., LTD.
- Toshihisa Okubo
- G02 - OPTICS
Information Patent Grant
Optical fiber cable with feedthrough
- Patent number D971162
- Issue date Nov 29, 2022
- Kohoku Kogyo Co., Ltd.
- Hirokazu Fujitani
- D13 - Equipment for production, distribution, or transformation of energy
Information Patent Grant
Wavelength selective filter
- Patent number 11,137,547
- Issue date Oct 5, 2021
- KOHOKU KOGYO CO., LTD.
- Takashi Kato
- G02 - OPTICS
Information Patent Grant
Optical fiber module and method for manufacturing the same
- Patent number 11,067,755
- Issue date Jul 20, 2021
- KOHOKU KOGYO CO., LTD.
- Katsuhiro Iwasaki
- G02 - OPTICS
Information Patent Grant
Optical communication module
- Patent number D879767
- Issue date Mar 31, 2020
- Kohoku Kogyo Co., Ltd.
- Katsuhiro Iwasaki
- D14 - Recording, communication, or information retrieval equipment
Information Patent Grant
Optical multiplexer/demultiplexer and optical transceiver
- Patent number 10,187,175
- Issue date Jan 22, 2019
- Kohoku Kogyo Co., Ltd.
- Katsuhiro Iwasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical device
- Patent number 10,025,122
- Issue date Jul 17, 2018
- Kohoku Kogyo Co., Ltd.
- Hiroaki Ono
- G02 - OPTICS
Information Patent Grant
Optical connector, method for manufacturing the same, and mold cont...
- Patent number 9,703,035
- Issue date Jul 11, 2017
- Kohoku Kogyo Co., Ltd.
- Katsuyuki Imoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Variable optical attenuator
- Patent number 9,488,847
- Issue date Nov 8, 2016
- Kohoku Kogyo Co., Ltd.
- Hiroaki Ono
- G02 - OPTICS
Information Patent Grant
Optical component including interference filter
- Patent number 9,341,757
- Issue date May 17, 2016
- Kohoku Kogyo Co., Ltd.
- Takashi Kato
- G02 - OPTICS
Information Patent Grant
Optical switch
- Patent number 9,332,325
- Issue date May 3, 2016
- Kohoku Kogyo Co., Ltd.
- Hiroaki Ono
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Connector component for optical fiber, manufacturing method thereof...
- Patent number 8,202,010
- Issue date Jun 19, 2012
- Kohoku Kogyo Co., Ltd.
- Futoshi Ishii
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Fiber array for optical communication and method of manufacturing t...
- Patent number 7,266,282
- Issue date Sep 4, 2007
- Kohoku Kogyo Co., Ltd.
- Jiangron Qiu
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
FAN-IN/FAN-OUT DEVICE
- Publication number 20240061204
- Publication date Feb 22, 2024
- KOHOKU KOGYO CO., LTD.
- Tomoaki KIRIYAMA
- G02 - OPTICS
Information Patent Application
OPTICAL FILTER DEVICE
- Publication number 20240004138
- Publication date Jan 4, 2024
- KOHOKU KOGYO CO., LTD.
- Katsuya KITO
- G02 - OPTICS
Information Patent Application
PREFORM FOR OPTICAL FIBER AND MANUFACTURING METHOD OF OPTICAL FIBER
- Publication number 20230303421
- Publication date Sep 28, 2023
- KOHOKU KOGYO CO., LTD.
- Katsuhiro IWASAKI
- G02 - OPTICS
Information Patent Application
SLOPE GAIN EQUALIZER
- Publication number 20220373741
- Publication date Nov 24, 2022
- KOHOKU KOGYO CO., LTD.
- Toshihisa Okubo
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER FEEDTHROUGH
- Publication number 20220283379
- Publication date Sep 8, 2022
- KOHOKU KOGYO CO., LTD.
- Hirokazu FUJITANI
- G02 - OPTICS
Information Patent Application
OPTICAL FIBER MODULE AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20210018693
- Publication date Jan 21, 2021
- KOHOKU KOGYO CO., LTD.
- Katsuhiro IWASAKI
- G02 - OPTICS
Information Patent Application
WAVELENGTH SELECTIVE FILTER
- Publication number 20200379179
- Publication date Dec 3, 2020
- KOHOKU KOGYO CO., LTD.
- Takashi KATO
- G02 - OPTICS
Information Patent Application
INTERFERENCE FILTER MODULE
- Publication number 20200379151
- Publication date Dec 3, 2020
- KOHOKU KOGYO CO., LTD.
- Toshihisa OKUBO
- G02 - OPTICS
Information Patent Application
OPTICAL MULTIPLEXER/DEMULTIPLEXER AND OPTICAL TRANSCEIVER
- Publication number 20180145789
- Publication date May 24, 2018
- KOHOKU KOGYO CO., LTD.
- Katsuhiro Iwasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL DEVICE
- Publication number 20160202506
- Publication date Jul 14, 2016
- KOHOKU KOGYO CO., LTD.
- Hiroaki Ono
- G02 - OPTICS
Information Patent Application
METHOD FOR MANUFACTURING OPTICAL FIBER BASE MATERIAL AND OPTICAL FI...
- Publication number 20150086784
- Publication date Mar 26, 2015
- KOHOKU KOGYO CO., LTD.
- Katsuyuki Imoto
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Application
OPTICAL CONNECTOR, METHOD FOR MANUFACTURING THE SAME, AND MOLD CONT...
- Publication number 20150055913
- Publication date Feb 26, 2015
- KOHOKU KOGYO CO., LTD
- Katsuyuki IMOTO
- G02 - OPTICS
Information Patent Application
PAINT SET
- Publication number 20120021387
- Publication date Jan 26, 2012
- Kohoku Kogyo Co, Ltd
- Kunio Watanabe
- B44 - DECORATIVE ARTS
Information Patent Application
CONNECTOR COMPONENT FOR OPTICAL FIBER, MANUFACTURING METHOD THEREOF...
- Publication number 20110194819
- Publication date Aug 11, 2011
- KOHOKU KOGYO CO., LTD.
- Futoshi ISHII
- G02 - OPTICS

Trademarklast 30 trademarks

Information Trademark
79377165 - SSG
- Serial number 79377165
- Filing date May 26, 2023
- KOHOKU KOGYO CO., LTD.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
79205105
- Serial number 79205105
- Registration number 5409539
- Filing date Oct 31, 2016
- KOHOKU KOGYO CO., LTD.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
79205293 - KOHOKU
- Serial number 79205293
- Registration number 5398617
- Filing date Oct 31, 2016
- KOHOKU KOGYO CO., LTD.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
Information Trademark
79149228 - ARTEO
- Serial number 79149228
- Registration number 4705936
- Filing date Apr 8, 2014
- KOHOKU KOGYO CO., LTD.
- 2 - Paints, varnishes, lacquers
Information Trademark
79150891 - CIRCLE COLOR
- Serial number 79150891
- Filing date Apr 8, 2014
- KOHOKU KOGYO CO., LTD.
- 2 - Paints, varnishes, lacquers

Kohoku Kogyo Co, Ltd

Organization

Patents Grantslast 30 patents

Slope gain equalizer

Interference filter module

Optical fiber cable with feedthrough

Wavelength selective filter

Optical fiber module and method for manufacturing the same

Optical communication module

Optical multiplexer/demultiplexer and optical transceiver

Optical device

Optical connector, method for manufacturing the same, and mold cont...

Variable optical attenuator

Optical component including interference filter

Optical switch

Connector component for optical fiber, manufacturing method thereof...

Fiber array for optical communication and method of manufacturing t...

Patents Applicationslast 30 patents

FAN-IN/FAN-OUT DEVICE

OPTICAL FILTER DEVICE

PREFORM FOR OPTICAL FIBER AND MANUFACTURING METHOD OF OPTICAL FIBER

SLOPE GAIN EQUALIZER

OPTICAL FIBER FEEDTHROUGH

OPTICAL FIBER MODULE AND METHOD FOR MANUFACTURING THE SAME

WAVELENGTH SELECTIVE FILTER

INTERFERENCE FILTER MODULE

OPTICAL MULTIPLEXER/DEMULTIPLEXER AND OPTICAL TRANSCEIVER

OPTICAL DEVICE

METHOD FOR MANUFACTURING OPTICAL FIBER BASE MATERIAL AND OPTICAL FI...

OPTICAL CONNECTOR, METHOD FOR MANUFACTURING THE SAME, AND MOLD CONT...

PAINT SET

CONNECTOR COMPONENT FOR OPTICAL FIBER, MANUFACTURING METHOD THEREOF...

Trademarklast 30 trademarks

79377165 - SSG

79205105

79205293 - KOHOKU

79149228 - ARTEO

79150891 - CIRCLE COLOR