Hiroyuki Yokoyama

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Wavelength path switching node apparatus and wavelength path alloca...
- Patent number 7,796,884
- Issue date Sep 14, 2010
- Kiddi Corporation
- Hajime Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic media communication apparatus
- Patent number 7,664,964
- Issue date Feb 16, 2010
- National Institute of Advanced Industrial Science and Technology
- Kenji Toda
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical cross-connect with path selecting function
- Patent number 7,437,072
- Issue date Oct 14, 2008
- KDDI Corporation
- Hiroyuki Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System with node apparatuses in IP/WDM network
- Patent number 7,272,313
- Issue date Sep 18, 2007
- KDDI Corporation
- Hajime Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Reflection routing method in optical packet switching network and o...
- Patent number 6,973,270
- Issue date Dec 6, 2005
- KDDI Corporation
- Hiroyuki Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Generation of optical pulse train having high repetition rate using...
- Patent number 6,795,479
- Issue date Sep 21, 2004
- NEC Corporation
- Hiroyuki Yokoyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Mode locking semiconductor laser system including external cavity
- Patent number 6,698,941
- Issue date Mar 2, 2004
- NEC Corporation
- Hiroyuki Yokoyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical repeater using two mode-locked laser diodes for regeneratin...
- Patent number 6,650,845
- Issue date Nov 18, 2003
- NEC Corporation
- Hisakazu Kurita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical measurement of target-light waveform
- Patent number 6,541,951
- Issue date Apr 1, 2003
- NEC Corporation
- Masayuki Shirane
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Call setup control apparatus in ATM switch
- Patent number 6,324,166
- Issue date Nov 27, 2001
- Kokusai Denshin Denwa Co., Ltd.
- Hiroyuki Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical functional amplifying method and optical functional amplify...
- Patent number 6,124,966
- Issue date Sep 26, 2000
- NEC Corporation
- Hiroyuki Yokoyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Mode-locked semiconductor laser and method of driving the same
- Patent number 6,031,851
- Issue date Feb 29, 2000
- NEC Corporation
- Takanori Shimizu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Multiple-cavity semiconductor laser capable of generating ultrashor...
- Patent number 5,586,138
- Issue date Dec 17, 1996
- NEC Corporation
- Hiroyuki Yokoyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method and apparatus for inducing photochemical reaction
- Patent number 4,976,930
- Issue date Dec 11, 1990
- NEC Corporation
- Shunji Kishida
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Patents Applicationslast 30 patents

Information Patent Application
Electronic media communication apparatus
- Publication number 20060191019
- Publication date Aug 24, 2006
- Nat. Inst. of Adv. Industrial Sci. and Tech.
- Kenji Toda
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Wavelength path switching node apparatus and wavelength path alloca...
- Publication number 20040172444
- Publication date Sep 2, 2004
- Hajime Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System with node apparatuses in IP/WDM network
- Publication number 20040042392
- Publication date Mar 4, 2004
- KDDI CORPORATION
- Hajime Nakamura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical cross-connect with path selecting function
- Publication number 20040037557
- Publication date Feb 26, 2004
- KDDI CORPORATION
- Hiroyuki Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CHARGING SYSTEM, APPARATUS FOR DECIDING A UNIT CHARGE, APPARATUS FO...
- Publication number 20030078898
- Publication date Apr 24, 2003
- CHARLES GORENSTEIN
- HAJIME NAKAMURA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Generation of optical pulse train having high repetition rate using...
- Publication number 20030012235
- Publication date Jan 16, 2003
- NEC Corporation
- Hiroyuki Yokoyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Mode locking semiconductor laser system including external cavity
- Publication number 20020064353
- Publication date May 30, 2002
- NEC Corporation
- Hiroyuki Yokoyama
- G02 - OPTICS
Information Patent Application
Optical measurement of target-light waveform
- Publication number 20020024689
- Publication date Feb 28, 2002
- Masayuki Shirane
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Reflectiion routing method in optical packet switching network and...
- Publication number 20020024700
- Publication date Feb 28, 2002
- KDDI CORPORATION
- Hiroyuki Yokoyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hiroyuki Yokoyama

Person

Patents Grantslast 30 patents

Wavelength path switching node apparatus and wavelength path alloca...

Electronic media communication apparatus

Optical cross-connect with path selecting function

System with node apparatuses in IP/WDM network

Reflection routing method in optical packet switching network and o...

Generation of optical pulse train having high repetition rate using...

Mode locking semiconductor laser system including external cavity

Optical repeater using two mode-locked laser diodes for regeneratin...

Optical measurement of target-light waveform

Call setup control apparatus in ATM switch

Optical functional amplifying method and optical functional amplify...

Mode-locked semiconductor laser and method of driving the same

Multiple-cavity semiconductor laser capable of generating ultrashor...

Method and apparatus for inducing photochemical reaction

Patents Applicationslast 30 patents

Electronic media communication apparatus

Wavelength path switching node apparatus and wavelength path alloca...

System with node apparatuses in IP/WDM network

Optical cross-connect with path selecting function

CHARGING SYSTEM, APPARATUS FOR DECIDING A UNIT CHARGE, APPARATUS FO...

Generation of optical pulse train having high repetition rate using...

Mode locking semiconductor laser system including external cavity

Optical measurement of target-light waveform

Reflectiion routing method in optical packet switching network and...