John Ma

Person

Milpitas, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Interference filter with high degree of selectivity for TVRO receiv...
- Patent number 5,159,711
- Issue date Oct 27, 1992
- Astec International Limited
- John Y. Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
TVRO receiver system with tracking filter for rejection of image fr...
- Patent number 5,060,297
- Issue date Oct 22, 1991
- John Y. Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
TVRO receiver system with low-cost video-noise reduction filter
- Patent number 4,876,739
- Issue date Oct 24, 1989
- Capetronic (BSR) Ltd.
- John Y. Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
BPSK demodulator and FM receiver for digital data pagers
- Patent number 4,816,769
- Issue date Mar 28, 1989
- John Y. Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Ferrite-core antenna
- Patent number 4,805,232
- Issue date Feb 14, 1989
- John Y. Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Satellite seeking system for earth-station antennas for TVRO systems
- Patent number 4,801,940
- Issue date Jan 31, 1989
- Capetronic (BSR) Ltd.
- John Y. Ma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
TVRD receiver system with automatic bandwidth adjustment
- Patent number 4,792,993
- Issue date Dec 20, 1988
- Capetronic (BSR) Ltd.
- John Y. Ma
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Automatic polarization control system for TVRO receivers
- Patent number 4,785,302
- Issue date Nov 15, 1988
- Capetronic (BSR) Ltd.
- John Y. Ma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
TVRO receiver system for locating audio subcarriers
- Patent number 4,783,848
- Issue date Nov 8, 1988
- Capetronic (BSR) Ltd.
- John Y. Ma
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
TVRO earth station receiver for reducing interference and improving...
- Patent number 4,761,825
- Issue date Aug 2, 1988
- Capetronic (BSR) Ltd.
- John Y. Ma
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digitally temperature compensated voltage-controlled oscillator
- Patent number 4,746,879
- Issue date May 24, 1988
- John Y. Ma
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
TVRO receiver system with low-cost video-noise reduction filter
- Patent number 4,718,117
- Issue date Jan 5, 1988
- Capetronic (BSR) Ltd.
- John Y. Ma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Motor pulse extraction system
- Patent number 4,684,858
- Issue date Aug 4, 1987
- Capetronic (BSR) Ltd.
- John Ma
- G05 - CONTROLLING REGULATING
Information Patent Grant
Antenna having coaxial driven element with grounded center conductor
- Patent number 4,626,862
- Issue date Dec 2, 1986
- John Ma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low-cost VCO using lumped elements in microwave band
- Patent number 4,625,183
- Issue date Nov 25, 1986
- Capetronic (BSR) Ltd.
- John Ma
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
CATV converter having improved tuning circuits
- Patent number 4,619,000
- Issue date Oct 21, 1986
- John Ma
- H03 - BASIC ELECTRONIC CIRCUITRY

Person

Patents Grantslast 30 patents

Interference filter with high degree of selectivity for TVRO receiv...

TVRO receiver system with tracking filter for rejection of image fr...

TVRO receiver system with low-cost video-noise reduction filter

BPSK demodulator and FM receiver for digital data pagers

Ferrite-core antenna

Satellite seeking system for earth-station antennas for TVRO systems

TVRD receiver system with automatic bandwidth adjustment

Automatic polarization control system for TVRO receivers

TVRO receiver system for locating audio subcarriers

TVRO earth station receiver for reducing interference and improving...

Digitally temperature compensated voltage-controlled oscillator

TVRO receiver system with low-cost video-noise reduction filter

Motor pulse extraction system

Antenna having coaxial driven element with grounded center conductor

Low-cost VCO using lumped elements in microwave band

CATV converter having improved tuning circuits