Hiroshi Hatakeyama

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Gain-clamped semiconductor optical amplifier
- Patent number 8,503,072
- Issue date Aug 6, 2013
- NEC Corporation
- Hiroshi Hatakeyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Flow sensor and manufacturing method therefor
- Patent number 8,166,814
- Issue date May 1, 2012
- Yamatake Corporation
- Shinichi Ike
- G01 - MEASURING TESTING
Information Patent Grant
Surface-emission type semiconductor laser
- Patent number 7,974,328
- Issue date Jul 5, 2011
- NEC Corporation
- Naofumi Suzuki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical communication system and optical transmitter
- Patent number 7,940,828
- Issue date May 10, 2011
- NEC Corporation
- Masayoshi Tsuji
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Surface emitting laser
- Patent number 7,881,358
- Issue date Feb 1, 2011
- NEC Corporation
- Takayoshi Anan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Surface emitting laser
- Patent number 7,817,696
- Issue date Oct 19, 2010
- NEC Corporation
- Hiroshi Hatakeyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Negative pressure attraction device and attraction confirming sensor
- Patent number 7,261,350
- Issue date Aug 28, 2007
- Yamatake Corporation
- Junichi Isetani
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
SECONDARY BATTERY
- Publication number 20140134461
- Publication date May 15, 2014
- Kazuhiko Inoue
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LITHIUM SECONDARY CELL
- Publication number 20140023935
- Publication date Jan 23, 2014
- NEC Corporation
- Takehiro Noguchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LITHIUM SECONDARY BATTERY
- Publication number 20130266847
- Publication date Oct 10, 2013
- NEC ENERGY DEVICES, LTD.
- Takehiro Noguchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Gain-clamped semiconductor optical amplifier
- Publication number 20110149381
- Publication date Jun 23, 2011
- Hiroshi Hatakeyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SENSOR, SENSOR TEMPERATURE CONTROL METHOD AND ABNORMALITY RECOVERY...
- Publication number 20100139389
- Publication date Jun 10, 2010
- Yamatake Corporation
- Yasuji Morita
- G01 - MEASURING TESTING
Information Patent Application
FLOW SENSOR
- Publication number 20100089146
- Publication date Apr 15, 2010
- Yamatake Corporation
- Yasuji Morita
- G01 - MEASURING TESTING
Information Patent Application
SURFACE EMITTING LASER
- Publication number 20100054290
- Publication date Mar 4, 2010
- NEC Corporation
- Hiroshi Hatakeyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SURFACE-EMISSION TYPE SEMICONDUCTOR LASER
- Publication number 20100034233
- Publication date Feb 11, 2010
- Naofumi Suzuki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SURFACE EMITTING LASER
- Publication number 20100020835
- Publication date Jan 28, 2010
- Takayoshi Anan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
FLOW SENSOR AND MANUFACTURING METHOD THEREFOR
- Publication number 20090078040
- Publication date Mar 26, 2009
- Yamatake Corporation
- Shinichi Ike
- G01 - MEASURING TESTING
Information Patent Application
SURFACE EMITTING LASER
- Publication number 20090080488
- Publication date Mar 26, 2009
- NEC Corporation
- Hiroshi HATAKEYAMA
- B82 - NANO-TECHNOLOGY
Information Patent Application
OPTICAL COMMUNICATION SYSTEM AND OPTICAL TRANSMITTER
- Publication number 20090028201
- Publication date Jan 29, 2009
- NEC Corporation
- Masayoshi Tsuji
- B82 - NANO-TECHNOLOGY
Information Patent Application
Vehicle-Mounted Optical Communication System and Vehicle-Mounted Op...
- Publication number 20080317476
- Publication date Dec 25, 2008
- NEC Corporation
- Masayoshi Tsuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Negative pressure attraction device and attraction confirming sensor
- Publication number 20050200142
- Publication date Sep 15, 2005
- Junichi Isetani
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Hiroshi Hatakeyama

Person

Patents Grantslast 30 patents

Gain-clamped semiconductor optical amplifier

Flow sensor and manufacturing method therefor

Surface-emission type semiconductor laser

Optical communication system and optical transmitter

Surface emitting laser

Surface emitting laser

Negative pressure attraction device and attraction confirming sensor

Patents Applicationslast 30 patents

SECONDARY BATTERY

LITHIUM SECONDARY CELL

LITHIUM SECONDARY BATTERY

Gain-clamped semiconductor optical amplifier

SENSOR, SENSOR TEMPERATURE CONTROL METHOD AND ABNORMALITY RECOVERY...

FLOW SENSOR

SURFACE EMITTING LASER

SURFACE-EMISSION TYPE SEMICONDUCTOR LASER

SURFACE EMITTING LASER

FLOW SENSOR AND MANUFACTURING METHOD THEREFOR

SURFACE EMITTING LASER

OPTICAL COMMUNICATION SYSTEM AND OPTICAL TRANSMITTER

Vehicle-Mounted Optical Communication System and Vehicle-Mounted Op...

Negative pressure attraction device and attraction confirming sensor