Alan Cha

Person

Glendale, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Stratospheric-based communication system for mobile users using add...
- Patent number 7,890,052
- Issue date Feb 15, 2011
- The DIRECTV Group, Inc.
- Donald C Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Stratospheric-based communication system for mobile users using add...
- Patent number 7,317,916
- Issue date Jan 8, 2008
- The DIRECTV Group, Inc.
- Donald C. D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Rapid user acquisition by a ground-based beamformer
- Patent number 7,257,418
- Issue date Aug 14, 2007
- The DIRECTV Group, Inc.
- Donald C. D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Concurrent communications between a user terminal and multiple stra...
- Patent number 6,941,138
- Issue date Sep 6, 2005
- The DIRECTV Group, Inc.
- Donald C. D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Micro cell architecture for mobile user tracking communication system
- Patent number 6,914,557
- Issue date Jul 5, 2005
- The DIRECTV Group, Inc.
- Donald C. D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Stratospheric-based communication system for mobile users having ad...
- Patent number 6,895,217
- Issue date May 17, 2005
- The DIRECTV Group, Inc.
- Donald C. D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Resource assignment system and method for determining the same
- Patent number 6,763,242
- Issue date Jul 13, 2004
- The DIRECTV Group, Inc.
- Ying Feria
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Stratospheric platforms based mobile communications architecture
- Patent number 6,756,937
- Issue date Jun 29, 2004
- The DIRECTV Group, Inc.
- Donald C. D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Architecture utilizing frequency reuse in accommodating user-link a...
- Patent number 6,751,458
- Issue date Jun 15, 2004
- The DIRECTV Group, Inc.
- Weizheng Wang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Four-port patch antenna
- Patent number 6,549,166
- Issue date Apr 15, 2003
- The Boeing Company
- Arun Bhattacharyya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dual hybrid-fed patch element for dual band circular polarization r...
- Patent number 6,424,299
- Issue date Jul 23, 2002
- The Boeing Company
- Alan Cha
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Micro cell architecture for mobile user tracking communication system
- Patent number 6,388,615
- Issue date May 14, 2002
- Hughes Electronics Corporation
- Donald C. D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
STRATOSPHERIC-BASED COMMUNICATION SYSTEM FOR MOBILE USERS USING ADD...
- Publication number 20080233884
- Publication date Sep 25, 2008
- Donald C. D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
FOUR-PART PATCH ANTENNA
- Publication number 20030043074
- Publication date Mar 6, 2003
- Arun Bhattacharyya
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Micro cell architecture for mobile user tracking communication system
- Publication number 20020126042
- Publication date Sep 12, 2002
- Hughes Electronics Corporation
- Donald C.D. Chang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Person

Patents Grantslast 30 patents

Stratospheric-based communication system for mobile users using add...

Stratospheric-based communication system for mobile users using add...

Rapid user acquisition by a ground-based beamformer

Concurrent communications between a user terminal and multiple stra...

Micro cell architecture for mobile user tracking communication system

Stratospheric-based communication system for mobile users having ad...

Resource assignment system and method for determining the same

Stratospheric platforms based mobile communications architecture

Architecture utilizing frequency reuse in accommodating user-link a...

Four-port patch antenna

Dual hybrid-fed patch element for dual band circular polarization r...

Micro cell architecture for mobile user tracking communication system

Patents Applicationslast 30 patents

STRATOSPHERIC-BASED COMMUNICATION SYSTEM FOR MOBILE USERS USING ADD...

FOUR-PART PATCH ANTENNA

Micro cell architecture for mobile user tracking communication system