Ken Atsumi

Person

Sapporo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Phase locked loop circuit and phase locked loop method
- Patent number 9,906,229
- Issue date Feb 27, 2018
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digitally controlled oscillator and output frequency control method
- Patent number 9,083,318
- Issue date Jul 14, 2015
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Phase difference detection method, phase difference detection circu...
- Patent number 9,059,719
- Issue date Jun 16, 2015
- Fujitsu Limited
- Ken Atsumi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Phase locked loop circuit and communication device
- Patent number 8,686,797
- Issue date Apr 1, 2014
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Phase comparator, phase synchronizing circuit, and phase-comparison...
- Patent number 7,855,580
- Issue date Dec 21, 2010
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Static magnetic field applying structure for use in atomic oscillator
- Patent number 7,145,403
- Issue date Dec 5, 2006
- Fujitsu Limited
- Hideyuki Matsuura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Atomic oscillator
- Patent number 6,985,043
- Issue date Jan 10, 2006
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Atomic oscillator
- Patent number 6,812,800
- Issue date Nov 2, 2004
- Fujitsu Limited
- Hideyuki Matsuura
- G04 - HOROLOGY
Information Patent Grant
Oscillator controller and atomic oscillator
- Patent number 6,801,091
- Issue date Oct 5, 2004
- Fujitsu Limited
- Ken Atsumi
- G04 - HOROLOGY
Information Patent Grant
Rubidium atom oscillator generating a stable frequency
- Patent number 6,570,455
- Issue date May 27, 2003
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Atomic oscillator utilizing a high frequency converting circuit and...
- Patent number 6,300,841
- Issue date Oct 9, 2001
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Rubidium atom oscillator with temperature stabilized frequency output
- Patent number 5,712,597
- Issue date Jan 27, 1998
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
DATA PROCESSING DEVICE AND DATA PROCESSING METHOD
- Publication number 20180013505
- Publication date Jan 11, 2018
- Fujitsu Limited
- Ken ATSUMI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
PHASE LOCKED LOOP CIRCUIT AND PHASE LOCKED LOOP METHOD
- Publication number 20160315626
- Publication date Oct 27, 2016
- Fujitsu Limited
- Ken ATSUMI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
DIGITALLY CONTROLLED OSCILLATOR AND OUTPUT FREQUENCY CONTROL METHOD
- Publication number 20140306774
- Publication date Oct 16, 2014
- Fujitsu Limited
- Ken ATSUMI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
PHASE DIFFERENCE DETECTION METHOD, PHASE DIFFERENCE DETECTION CIRCU...
- Publication number 20120126636
- Publication date May 24, 2012
- Fujitsu Limited
- Ken ATSUMI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
PHASE LOCKED LOOP CIRCUIT AND COMMUNICATION DEVICE
- Publication number 20110156824
- Publication date Jun 30, 2011
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CONTROL APPARATUS AND CLOCK SYNCHRONIZING METHOD
- Publication number 20100123492
- Publication date May 20, 2010
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
PHASE COMPARATOR, PHASE SYNCHRONIZING CIRCUIT, AND PHASE-COMPARISON...
- Publication number 20090273371
- Publication date Nov 5, 2009
- Fujitsu Limited
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Static magnetic field applying structure for use in atomic oscillator
- Publication number 20050128014
- Publication date Jun 16, 2005
- Hideyuki Matsuura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Atomic oscillator
- Publication number 20050068115
- Publication date Mar 31, 2005
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Atomic oscillator
- Publication number 20030146796
- Publication date Aug 7, 2003
- Hideyuki Matsuura
- G04 - HOROLOGY
Information Patent Application
Oscillator controller and atomic oscillator
- Publication number 20030146797
- Publication date Aug 7, 2003
- Ken Atsumi
- G04 - HOROLOGY
Information Patent Application
Rubidium atom oscillator generating a stable frequency
- Publication number 20020125959
- Publication date Sep 12, 2002
- Ken Atsumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Rubidium atom oscillator
- Publication number 20010035795
- Publication date Nov 1, 2001
- Hideyuki Matsuura
- H03 - BASIC ELECTRONIC CIRCUITRY

Person

Patents Grantslast 30 patents

Phase locked loop circuit and phase locked loop method

Digitally controlled oscillator and output frequency control method

Phase difference detection method, phase difference detection circu...

Phase locked loop circuit and communication device

Phase comparator, phase synchronizing circuit, and phase-comparison...

Static magnetic field applying structure for use in atomic oscillator

Atomic oscillator

Atomic oscillator

Oscillator controller and atomic oscillator

Rubidium atom oscillator generating a stable frequency

Atomic oscillator utilizing a high frequency converting circuit and...

Rubidium atom oscillator with temperature stabilized frequency output

Patents Applicationslast 30 patents

DATA PROCESSING DEVICE AND DATA PROCESSING METHOD

PHASE LOCKED LOOP CIRCUIT AND PHASE LOCKED LOOP METHOD

DIGITALLY CONTROLLED OSCILLATOR AND OUTPUT FREQUENCY CONTROL METHOD

PHASE DIFFERENCE DETECTION METHOD, PHASE DIFFERENCE DETECTION CIRCU...

PHASE LOCKED LOOP CIRCUIT AND COMMUNICATION DEVICE

CONTROL APPARATUS AND CLOCK SYNCHRONIZING METHOD

PHASE COMPARATOR, PHASE SYNCHRONIZING CIRCUIT, AND PHASE-COMPARISON...

Static magnetic field applying structure for use in atomic oscillator

Atomic oscillator

Atomic oscillator

Oscillator controller and atomic oscillator

Rubidium atom oscillator generating a stable frequency

Rubidium atom oscillator