Daisuke Koizumi

Person

Zushi-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Radio base station apparatus
- Patent number 8,428,651
- Issue date Apr 23, 2013
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Radio base station apparatus
- Patent number 8,213,992
- Issue date Jul 3, 2012
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Coplanar waveguide resonator and coplanar waveguide filter using th...
- Patent number 7,978,027
- Issue date Jul 12, 2011
- NTT DoCoMo, Inc.
- Kei Satoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Signal switching device
- Patent number 7,774,034
- Issue date Aug 10, 2010
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Coplanar resonator and filter using the same
- Patent number 7,764,147
- Issue date Jul 27, 2010
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dual band resonator and dual band filter
- Patent number 7,710,222
- Issue date May 4, 2010
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Planar circuit housing
- Patent number 7,564,699
- Issue date Jul 21, 2009
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Coupling structure, resonator excitation structure and filter for c...
- Patent number 7,397,331
- Issue date Jul 8, 2008
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Filter with improved capacitive coupling portion
- Patent number 7,378,924
- Issue date May 27, 2008
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Signal switching device
- Patent number 7,307,045
- Issue date Dec 11, 2007
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Variable resonator and variable phase shifter
- Patent number 7,292,124
- Issue date Nov 6, 2007
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Coplanar waveguide resonator
- Patent number 7,161,449
- Issue date Jan 9, 2007
- NTT DoCoMo, Inc.
- Kei Satoh
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
RADIO BASE STATION APPARATUS
- Publication number 20110026931
- Publication date Feb 3, 2011
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RADIO BASE STATION APPARATUS
- Publication number 20100304790
- Publication date Dec 2, 2010
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DUAL BAND RESONATOR AND DUAL BAND FILTER
- Publication number 20080278265
- Publication date Nov 13, 2008
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COPLANAR WAVEGUIDE RESONATOR AND COPLANAR WAVEGUIDE FILTER USING TH...
- Publication number 20080238578
- Publication date Oct 2, 2008
- NTT DoCoMo, Inc.
- Kei Satoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SIGNAL SWITCHING DEVICE
- Publication number 20070230450
- Publication date Oct 4, 2007
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Planar circuit housing
- Publication number 20070223202
- Publication date Sep 27, 2007
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
Coplanar resonator and filter using the same
- Publication number 20070052502
- Publication date Mar 8, 2007
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Coupling structure, resonator excitation structure and filter for c...
- Publication number 20060193559
- Publication date Aug 31, 2006
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Filter
- Publication number 20050206481
- Publication date Sep 22, 2005
- NTT DoCoMo, Inc.
- Daisuke Koizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Variable resonator and variable phase shifter
- Publication number 20050190018
- Publication date Sep 1, 2005
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Coplanar waveguide resonator
- Publication number 20050088259
- Publication date Apr 28, 2005
- NTT DoCoMo, Inc.
- Kei Satoh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Signal switching device
- Publication number 20040097379
- Publication date May 20, 2004
- NTT DoCoMo, Inc.
- Kunihiro Kawai
- H01 - BASIC ELECTRIC ELEMENTS

Daisuke Koizumi

Person

Patents Grantslast 30 patents

Radio base station apparatus

Radio base station apparatus

Coplanar waveguide resonator and coplanar waveguide filter using th...

Signal switching device

Coplanar resonator and filter using the same

Dual band resonator and dual band filter

Planar circuit housing

Coupling structure, resonator excitation structure and filter for c...

Filter with improved capacitive coupling portion

Signal switching device

Variable resonator and variable phase shifter

Coplanar waveguide resonator

Patents Applicationslast 30 patents

RADIO BASE STATION APPARATUS

RADIO BASE STATION APPARATUS

DUAL BAND RESONATOR AND DUAL BAND FILTER

COPLANAR WAVEGUIDE RESONATOR AND COPLANAR WAVEGUIDE FILTER USING TH...

SIGNAL SWITCHING DEVICE

Planar circuit housing

Coplanar resonator and filter using the same

Coupling structure, resonator excitation structure and filter for c...

Filter

Variable resonator and variable phase shifter

Coplanar waveguide resonator

Signal switching device