Inventor · Zhejiang, CN

Changming Liu

87Patents
11h-index
40Co-inventors
78Inventor score

Filing activity: Sep 8, 2000 → Mar 4, 2024

Most-cited inventions

PatentTitleAreaCited byStatus
US7197660B1 High availability network security systems Electricity 87 Expired
US8948046B2 Routing method and system for a wireless network Electricity 56 Active
US8483194B1 Airtime-based scheduling Electricity 38 Active
US8032653B1 Guaranteed bandwidth sharing in a traffic shaping system Electricity 23 Active
US7848335B1 Automatic connected virtual private network Electricity 23 Active
US9674892B1 Exclusive preshared key authentication Electricity 20 Active
US7779461B1 Point-to-multi-point/non-broadcasting multi-access VPN tunnels Electricity 18 Active
US8261337B1 Firewall security between network devices Electricity 13 Active
US8218502B1 Predictive and nomadic roaming of wireless clients across different network subnets Electricity 12 Active
US7587591B2 Secure transport of multicast traffic Electricity 12 Active
US7839771B2 Backhaul failover method and system for a wireless network Electricity 11 Active
USD823837S1 Polarized antenna General 10 Active
US9813862B2 Proximity beacon management using a network device Electricity 8 Active
US8132000B2 Secure transport of multicast traffic Electricity 6 Active
US7725925B2 Enforcing access control on multicast transmissions Electricity 6 Active
US7941826B2 Enforcing access control on multicast transmissions Electricity 5 Active
US11581454B1 Solar cell, manufacturing method thereof, and photovoltaic module Emerging Cross-Sectional Technologies 5 Active
US7853591B1 Protection of database operations Emerging Cross-Sectional Technologies 4 Active
US8614951B2 Guaranteed bandwidth sharing in a traffic shaping system Electricity 4 Active
US9794169B2 Application based data traffic routing using network tunneling Electricity 4 Active
US10033112B2 Antenna pattern matching and mounting Electricity 3 Active
US8483183B2 Predictive and nomadic roaming of wireless clients across different network subnets Electricity 3 Active
US9338816B2 Predictive and nomadic roaming of wireless clients across different network subnets Electricity 2 Active
US9867167B2 Airtime-based packet scheduling for wireless networks Electricity 2 Active
US10298296B2 Antenna pattern matching and mounting Electricity 2 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.