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Chang Qing patents

Chang Qing holds 5 patents in our database, with recent filings and technology areas summarized below.

Company patent statistics
MetricValue
Total patents5
Recent patents0
First publicationOct 7, 2021
Latest publicationAug 23, 2022

Filing trend

Year-over-year patent counts for this assignee.

Filing activity appears to be growing based on the most recent years.

Patents filed per year
YearPatents
20211
20224
Browse patents by year
YearPatents
20211
20224

Recent patents

Latest publications where this party is an assignee.

Notable patents

Representative or frequently cited publications from precomputed assignee stats.

Top CPC classifications

Most common classification codes in this portfolio.

Top CPC codes by patent count
CPCPatents
B22F9/105
B22F2999/005
B22F1/0655
B33Y70/004
B22F2201/113

Technology areas

Mapped technology topics for this assignee.

Company technology slices
TechnologyPatents
Operations & Transport5
Chemistry & Metallurgy1