基于专利权人-分类号多重共现分析的全球专利布局研究——以太阳能汽车技术领域为例

Study on the Global Patent Layout Based on the Multiple Co-occurrence Analysis with Patent Assignees and Classification Codes——In the Case of Solar Vehicles Technology

以太阳能汽车技术领域为例,从德温特数据库中下载专利文献的专利权人与分类号信息作为样本,构建2-模异质多重共现网络,将两类特征项及其3种共现关系在同一图谱中进行集中展示,从中寻找该技术领域的主要研发力量和热门技术主题,并对二者之间的交叉关联进行量化分析。证实了多重共现分析能够克服一重共现分析揭示维度单一的不足,尤其适合于潜在关系的发掘。研究发现,在太阳能汽车领域日本的技术优势非常明显,日本企业继续保持全球领先水平。中国的整体技术实力居于世界前列,但中国企业个体的技术力量却相对单薄,在市场竞争中将处于劣势地位。

Taking the Derwent potent literatures in the technical field of solar vehicles as the sample, a 2-mode heteroge- neous multiple co - occurrence network has been constructed based on the co - occun^nce relations of patent assignees and classifica- tion codes, with two terms and three kinds of co - occurrence relations centralized displaying in the same visualization map, Powerful research finns and hot technical themes have been identified through the quantitative analysis, as well as the practical and potential collaboration relations have been detected and compared. It confirmed that the method of multiple co- occurrence analysis offering more findings with multiple dimensions that can overcome the shortcomings of single dimension co - occurrence analysis. It is espe- cially suitable for exploring potential relations. The results revealed that Japan possessing obvious advantage in the field of solar vehi- cles, with Japanese companies maintaining world leading level. China＇s overall technical strength living in the forefront of the world, but the individual strength of Chinese enterprise is relatively weak, resulted in the disadvantage of market competition.