Keyphrases
China
100%
People's Republic of China
100%
Retrieval System
100%
Patent Activity
100%
International Patent Classification
100%
Patent Application
50%
Class Classification
33%
Patent Classification Code
33%
Developing Countries
16%
Developed Countries
16%
System Analysis
16%
Technology Assessment
16%
Technological Fields
16%
International Competitiveness
16%
Literature Search
16%
Chinese Patent
16%
Patented Technology
16%
Patent Database
16%
Social Sciences
China
100%
USA
100%
Patent Classification
100%
Classification Systems
28%
Chinese
14%
Developing Countries
14%
Technology Assessment
14%
Systems Design
14%
Information Retrieval
14%
Developed Countries
14%
Computer Science
Class Classification
100%
Patent Research
100%
System Analysis
50%
Developed Country
50%
Patenting Activity
50%
Economics, Econometrics and Finance
Developing Countries
100%
Industrialized Countries
100%
International Competition
100%