with tubes only

Industry

CPC
H03F3/02

This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

HELECTRICITY H03Electronic circuits H03FAMPLIFIERS H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements

Current Industry

H03F3/02with tubes only

Industries

Patents Grantslast 30 patents

Information Patent Grant
Vacuum tube amplifier module and assembly method thereof
- Patent number 12,101,064
- Issue date Sep 24, 2024
- DREAMUS COMPANY
- Sun Yeol Lee
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Transistor bias adjustment for optimization of third order intercep...
- Patent number 11,894,809
- Issue date Feb 6, 2024
- pSemi Corporation
- Rong Jiang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Low voltage tube circuits
- Patent number 11,128,262
- Issue date Sep 21, 2021
- Ronald Quan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Vacuum tube amplification system capable of reducing residual noise...
- Patent number 11,121,678
- Issue date Sep 14, 2021
- ECHOWELL ELECTRONIC CO., LTD.
- Hsi-Hsien Chen
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Equilibration of a multibeam inductive output tube
- Patent number 10,490,383
- Issue date Nov 26, 2019
- Thales
- Claude Bel
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low voltage tube circuits
- Patent number 10,216,205
- Issue date Feb 26, 2019
- Ronald Quan
- G05 - CONTROLLING REGULATING
Information Patent Grant
Vacuum tube audio amplifier
- Patent number 10,218,320
- Issue date Feb 26, 2019
- ECHOWELL ELECTRONICS CO., LTD.
- Hsi-Hsien Chen
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Low voltage tube circuits
- Patent number 10,063,194
- Issue date Aug 28, 2018
- Ronald Quan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Noise cancellation in amplifier systems
- Patent number 10,020,781
- Issue date Jul 10, 2018
- Steven M. Fryette
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tube amplifier systems and related methods
- Patent number 9,484,869
- Issue date Nov 1, 2016
- Brian Rois
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electronic device and control method thereof
- Patent number 9,413,304
- Issue date Aug 9, 2016
- Samsung Electronics Co., Ltd.
- Jae-cheol Lee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multi-primary distributed active transformer amplifier power supply...
- Patent number RE45974
- Issue date Apr 12, 2016
- AXIOM MICRODEVICES, INC.
- Scott D. Kee
- 001 -
Information Patent Grant
Multi-primary distributed active transformer amplifier power supply...
- Patent number 8,242,855
- Issue date Aug 14, 2012
- Axiom Microdevices, Inc.
- Scott D. Kee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multi-primary distributed active transformer amplifier power supply...
- Patent number 7,915,960
- Issue date Mar 29, 2011
- Axiom Microdevices, Inc.
- Scott D. Kee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multi-primary distributed active transformer amplifier power supply...
- Patent number 7,760,025
- Issue date Jul 20, 2010
- Axiom Microdevices, Inc.
- Scott Kee
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for RIAA correction of audio signal with use of transformer...
- Patent number 7,493,180
- Issue date Feb 17, 2009
- Outsource Technologies, Inc.
- Alexander Y. Sokolov
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Multi-primary distributed active transformer amplifier power supply...
- Patent number 7,471,153
- Issue date Dec 30, 2008
- Axiom Microdevices, Inc.
- Scott D. Kee
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electron tube amplification
- Patent number 7,454,221
- Issue date Nov 18, 2008
- Hewlett-Packard Development Company, L.P.
- James C. McKinnell
- G11 - INFORMATION STORAGE
Information Patent Grant
Selectable power supply for audio amplifier
- Patent number 7,417,502
- Issue date Aug 26, 2008
- Paul Cochrane
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Vacuum tube circuit
- Patent number 7,397,303
- Issue date Jul 8, 2008
- KORG, Inc.
- Fumio Mieda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Supply circuit for power amplifier drivers
- Patent number 7,095,283
- Issue date Aug 22, 2006
- Axiom Microdevices, Inc.
- Scott D. Kee
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Methods and apparatus for switching between class A and A/B operati...
- Patent number 7,053,714
- Issue date May 30, 2006
- Peavey Electronics Corporation
- John Calvin Fields
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Vacuum tube amplifier having grid as output and plate as input
- Patent number 7,053,710
- Issue date May 30, 2006
- KORG, Inc.
- Fumio Mieda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Double peaked amplifier
- Patent number 4,199,730
- Issue date Apr 22, 1980
- The United States of America as represented by the Secretary of the Army
- Virgil R. Beck
- F42 - AMMUNITION BLASTING
Information Patent Grant
3474350
- Patent number 3,474,350
- Issue date Oct 21, 1969
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
3423585
- Patent number 3,423,585
- Issue date Jan 21, 1969
- G01 - MEASURING TESTING
Information Patent Grant
3420954
- Patent number 3,420,954
- Issue date Jan 7, 1969
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
3328711
- Patent number 3,328,711
- Issue date Jun 27, 1967
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
3325728
- Patent number 3,325,728
- Issue date Jun 13, 1967
- G01 - MEASURING TESTING
Information Patent Grant
3244969
- Patent number 3,244,969
- Issue date Apr 5, 1966
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
Transistor Bias Adjustment for Optimization of Third Order Intercep...
- Publication number 20240283407
- Publication date Aug 22, 2024
- pSemi Corporation
- Rong Jiang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
TRANSIT
- Publication number 20230080804
- Publication date Mar 16, 2023
- Roxtec AB
- Daniel STRÄNG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
VACUUM TUBE AMPLIFIER MODULE AND ASSEMBLY METHOD THEREOF
- Publication number 20230064683
- Publication date Mar 2, 2023
- DREAMUS COMPANY
- Sun Yeol LEE
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VACUUM TUBE FOR AMPLIFIER CIRCUIT, AND AMPLIFIER CIRCUIT USING SAME
- Publication number 20210384871
- Publication date Dec 9, 2021
- Hamamatsu Photonics K.K.
- Hiroshige MORI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
VACUUM TUBE AUDIO AMPLIFIER
- Publication number 20190068138
- Publication date Feb 28, 2019
- ECHOWELL ELECTRONIC CO., LTD.
- Hsi-Hsien CHEN
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Low Voltage Tube Circuits
- Publication number 20190013782
- Publication date Jan 10, 2019
- Ronald Quan
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
EQUILIBRATION OF A MULTIBEAM INDUCTIVE OUTPUT TUBE
- Publication number 20180294132
- Publication date Oct 11, 2018
- THALES
- Claude BEL
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Low Voltage Tube Circuits
- Publication number 20170329359
- Publication date Nov 16, 2017
- Ronald Quan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
NOISE CANCELLATION IN AMPLIFIER SYSTEMS
- Publication number 20170207754
- Publication date Jul 20, 2017
- Steven Fryette Design, Inc.
- Steven M. Fryette
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MEANS FOR DYNAMIC ELECTRONIC OR DIGITAL PROGRAMMABLE CONTROL OF ANA...
- Publication number 20150194939
- Publication date Jul 9, 2015
- Matthew Loren Beeson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Tube Amplifier Systems and Related Methods
- Publication number 20140266430
- Publication date Sep 18, 2014
- Brian Rois
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
ELECTRONIC DEVICE AND CONTROL METHOD THEREOF
- Publication number 20140176237
- Publication date Jun 26, 2014
- Samsung Electronics Co., Ltd.
- Jae-cheol LEE
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTI-PRIMARY DISTRIBUTED ACTIVE TRANSFORMER AMPLIFIER POWER SUPPLY...
- Publication number 20110175685
- Publication date Jul 21, 2011
- Scott D. Kee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
MULTI-PRIMARY DISTRIBUTED ACTIVE TRANSFORMER AMPLIFIER POWER SUPPLY...
- Publication number 20100283548
- Publication date Nov 11, 2010
- Scott D. Kee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Multi-Primary Distributed Active Transformer Amplifier Power Supply...
- Publication number 20090102592
- Publication date Apr 23, 2009
- Scott D. Kee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RIAA CORRECTION OF AUDIO SIGNAL WITH USE OF TRANSFORMER
- Publication number 20070257762
- Publication date Nov 8, 2007
- Outsource Technologies, Inc.
- Alexander Y. Sokolov
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Vacuum tube circuit
- Publication number 20070228988
- Publication date Oct 4, 2007
- Fumio Mieda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Method for RIAA correction of audio signal with use of transformer...
- Publication number 20050226443
- Publication date Oct 13, 2005
- Outsource Technologies, Inc.
- Alexander Y. Sokolov
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Method for RIAA correction of audio signal with use of transformer
- Publication number 20050219031
- Publication date Oct 6, 2005
- Outsource Technologies, Inc.
- Alexander Y. Sokolov
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Supply circuit for power amplifier drivers
- Publication number 20050200420
- Publication date Sep 15, 2005
- Scott D. Kee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Multi-primary distributed active transformer amplifier power supply...
- Publication number 20050189995
- Publication date Sep 1, 2005
- Scott D. Kee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Multi-primary distributed active transformer oscillator power suppl...
- Publication number 20050184813
- Publication date Aug 25, 2005
- Scott D. Kee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Vacuum tube amplifier
- Publication number 20040257158
- Publication date Dec 23, 2004
- Fumio Mieda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Utilizing vacuum tubes in computer audio circuitry
- Publication number 20020052665
- Publication date May 2, 2002
- Louis I. Memran
- G06 - COMPUTING CALCULATING COUNTING

with tubes only

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Vacuum tube amplifier module and assembly method thereof

Transistor bias adjustment for optimization of third order intercep...

Low voltage tube circuits

Vacuum tube amplification system capable of reducing residual noise...

Equilibration of a multibeam inductive output tube

Low voltage tube circuits

Vacuum tube audio amplifier

Low voltage tube circuits

Noise cancellation in amplifier systems

Tube amplifier systems and related methods

Electronic device and control method thereof

Multi-primary distributed active transformer amplifier power supply...

Multi-primary distributed active transformer amplifier power supply...

Multi-primary distributed active transformer amplifier power supply...

Multi-primary distributed active transformer amplifier power supply...

Method for RIAA correction of audio signal with use of transformer...

Multi-primary distributed active transformer amplifier power supply...

Electron tube amplification

Selectable power supply for audio amplifier

Vacuum tube circuit

Supply circuit for power amplifier drivers

Methods and apparatus for switching between class A and A/B operati...

Vacuum tube amplifier having grid as output and plate as input

Double peaked amplifier

3474350

3423585

3420954

3328711

3325728

3244969

Patents Applicationslast 30 patents

Transistor Bias Adjustment for Optimization of Third Order Intercep...

TRANSIT

VACUUM TUBE AMPLIFIER MODULE AND ASSEMBLY METHOD THEREOF

VACUUM TUBE FOR AMPLIFIER CIRCUIT, AND AMPLIFIER CIRCUIT USING SAME

VACUUM TUBE AUDIO AMPLIFIER

Low Voltage Tube Circuits

EQUILIBRATION OF A MULTIBEAM INDUCTIVE OUTPUT TUBE

Low Voltage Tube Circuits

NOISE CANCELLATION IN AMPLIFIER SYSTEMS

MEANS FOR DYNAMIC ELECTRONIC OR DIGITAL PROGRAMMABLE CONTROL OF ANA...

Tube Amplifier Systems and Related Methods

ELECTRONIC DEVICE AND CONTROL METHOD THEREOF

MULTI-PRIMARY DISTRIBUTED ACTIVE TRANSFORMER AMPLIFIER POWER SUPPLY...

MULTI-PRIMARY DISTRIBUTED ACTIVE TRANSFORMER AMPLIFIER POWER SUPPLY...

Multi-Primary Distributed Active Transformer Amplifier Power Supply...

RIAA CORRECTION OF AUDIO SIGNAL WITH USE OF TRANSFORMER

Vacuum tube circuit

Method for RIAA correction of audio signal with use of transformer...

Method for RIAA correction of audio signal with use of transformer

Supply circuit for power amplifier drivers

Multi-primary distributed active transformer amplifier power supply...

Multi-primary distributed active transformer oscillator power suppl...

Vacuum tube amplifier

Utilizing vacuum tubes in computer audio circuitry