Joanna Qun Zang

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San Jose, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method for a cable modem to rapidly switch to a backup CMTS
- Patent number RE44661
- Issue date Dec 24, 2013
- Cisco Technology, Inc.
- Feisal Daruwalla
- 370 - Multiplex communications
Information Patent Grant
Downstream channel change technique implemented in an access network
- Patent number 7,672,230
- Issue date Mar 2, 2010
- Cisco Technology, Inc.
- John T. Chapman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Downstream channel change technique implemented in an access network
- Patent number 7,656,890
- Issue date Feb 2, 2010
- Cisco Technology, Inc.
- John T. Chapman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Downstream channel change technique implemented in an access network
- Patent number 7,113,484
- Issue date Sep 26, 2006
- Cisco Technology, Inc.
- John T. Chapman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cable network redundancy architecture
- Patent number 7,068,712
- Issue date Jun 27, 2006
- Cisco Technology, Inc.
- Joanna Qun Zang
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method for a cable modem to rapidly switch to a backup CMTS
- Patent number 7,058,007
- Issue date Jun 6, 2006
- Cisco Technology, Inc.
- Feisal Daruwalla
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Downstream channel change technique implemented in an access network
- Publication number 20060262722
- Publication date Nov 23, 2006
- Cisco Technology, Inc.
- John T. Chapman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Downstream channel change technique implemented in an access network
- Publication number 20060251097
- Publication date Nov 9, 2006
- Cisco Technology, Inc.
- John T. Chapman
- H04 - ELECTRIC COMMUNICATION TECHNIQUE