Investigation of Technological Trends in Shading Devices Through Patent Analysis

Abstract

Abstract. In recent years, the issues of energy use reduction and sustainable development have garnered considerable interest. This study has conducted a patent search using United States Patent and Trademarks Office (USPTO) data to investigate technological trends in sustainable development, using shading devices for buildings as an example, because they have the potential to save energy by effectively preventing heat from coming indoors, and lowering the indoor heat load. The purpose of this study was to explore the status of shading devices and analyze patent activity, major assignees, assignee countries, core technology fields, patent citations, potential competitors of patent assignees, and developmental path based on patent analysis using a database that spanned the years from 1974 to 2011. The results provide a clear picture of, and evidence for, the pattern of shading device technology; they suggest that automatic sensing shading devices are the focus of current technological developments, thus saving time and costs in future research development.

Text Mining-Based Patent Analysis of Bim Application in Construction

“…Yoon et al (2011) proposed a novel method called Invention Property-Function Network Analysis (IPFN) to extract properties and functions from patents related to silicon-based thin film solar cells, and to identify the technological implications of properties and functions using SNA. Perng and Huang (2016) revealed the current status of patent activities, major assignees, assignee countries, and core technology fields of shading devices by using SNA.…”

“…Social Network Analysis (SNA) is a scientific and systematic approach in which a node is a role and links are used to show relationships between nodes (Perng & Huang, 2016). Regarding the attributes of the links, there are two types of social networks: directed networks and undirected networks.…”

Patent Cooperative Patterns and Development Trends of Chinese Construction Enterprises: A Network Analysis

“…They predicted the trend of the project governance structure and investigated risk based on this structure. Pering and Huang (2016) used patent data from shading devices to investigate technological trends based on SNA. The results provided a clear picture of, and evidence for, the citation between shading device technology.…”