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CHANG LEI

Overview
  • Total Patents
    24
  • GoodIP Patent Rank
    106,722
  • Filing trend
    ⇩ 100.0%
About

CHANG LEI has a total of 24 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2003. It filed its patents most often in China, WIPO (World Intellectual Property Organization) and United States. Its main competitors in its focus markets computer technology, digital networks and it methods for management are AUSTRALIAN PORK LTD, SHENZHEN COMIX GROUP CO LTD and QUORA INC.

Patent filings in countries

World map showing CHANG LEIs patent filings in countries

Patent filings per year

Chart showing CHANG LEIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chang Lei 20
#2 Luan Tian 4
#3 Klein William L 1
#4 Mao Wenbo 1
#5 Guo Erhua 1
#6 Wang Guyue 1
#7 He Ying 1
#8 Finch Caleb E 1
#9 Lambert Mary P 1
#10 Krafft Grant A 1

Latest patents

Publication Filing date Title
WO2018121238A1 Event handling method and device based on user behavior
WO2019109325A1 Advertisement click and conversion test apparatus and method
WO2018068717A1 Advertisement traffic limitation and reservation apparatus and method
WO2018045879A1 Advertising access server and advertising access service method
CN106707543A Color-variable and blue light-resistant lens
CN105984710A Full-automatic feeder with medium frequency and high frequency
CN104044168A Paper tube breaking device
CN104043599A Recyclable waste paper distinguishing device
CN104043507A Single-drive continuous paper sleeve shredding machine
CN104056783A Oscillation centrifugal type grain screening machine
CN104043598A Full-automatic waste paper distinguishing device
CN104058290A Paper arranging machine
CN104056699A Automatic paper feeding and shredding machine
CN104043513A Single-drive automatic paper feeding and shredding machine
CN104043492A Efficient shredder
CN104053293A Paper static elimination device
US8875222B1 Efficient XACML access control processing
CN102852132A High-frequency static compaction-drainage-grouting composite foundation processing method and special equipment
CN102828507A Construction method and special hole former for large-diameter cast-in-situ concrete composite pile
CN102808406A Construction method for row composite piling wall and special hole forming machine