CAJ | 학술논문

技术领域是国际专利分类的重要工具，不同技术领域专利应该具有不同的特性。通过不同国家授权的化学冶金技术领域专利维持时间可以在一定程度上反映其专利价值。检索美日韩德法中等国授权的化学冶金技术领域专利相关信息，通过相关软件分析，得出如下结论：不同国家授权的化学冶金技术领域与整体技术领域的专利平均维持时间顺序分别一致；美国授权专利在维持到后期被终止率较高，日德法韩授权专利在维持到中后期时被终止率较高，中国授权专利在维持前期被终止率较高。
기술영역시국제전리분류적중요공구，불동기술영역전리응해구유불동적특성。통과불동국가수권적화학야금기술영역전리유지시간가이재일정정도상반영기전리개치。검색미일한덕법중등국수권적화학야금기술영역전리상관신식，통과상관연건분석，득출여하결론：불동국가수권적화학야금기술영역여정체기술영역적전리평균유지시간순서분별일치；미국수권전리재유지도후기피종지솔교고，일덕법한수권전리재유지도중후기시피종지솔교고，중국수권전리재유지전기피종지솔교고。
The technical field is an important norm for the patent classification, and each technical field should have its own characteris-tics. The values of patents could be reflected by the situations of the maintenance time of patents granted by different countries in the tech-nological field of chemical metallurgy. By retrieving the information of patents granted by America, Japan, Korea, Germany, French and China in the technical field of chemical metallurgy, conclusions based on the related software analysis results can be drawn like the follow-ing: the average maintenance time of patents of this technological field is consistent with the average maintenance time of all technical fields in each country;the terminated patents granted in America are mostly distributed in the last stage, and the terminated patents granted in Japan, Germany, France, and Korea are mostly distributed in the middle and last stages, while most of the patents granted in China are terminated in the early stage.