关键词： 检索程序   WPI   检索标识   检索点   文献号   分类号   分类标记   磁带   计算机外围设备   提问项   表文件   索引顺序文件   索引文件   专利索引   情报检索   情报工作  

关键词： 德温特公司   WPI   CPI   德温特出版有限公司(英国)   专利索引   专利文摘  

摘要： 英国德温特公司是从事专利情报工作的机构。1970年创办了《中心专利索引公报》,简称CPI,1971年创办了《世界专利索引》,简称WPI,1975年又创办了《世界专利索引文摘杂志》,简称WPAT。这些出版物报导美、英、法、德(东)、日、苏、比利时、加拿大、南非、瑞典、瑞

摘要： An ad hoc committee of the MCA, formed in 1971 to make a comprehensive survey of the needs of the chemical industry in patent information retrieval services, included among its recommendations a standing committee of the MCA on patent information retrieval. The Technical Information Retrieval Committee of the MCA was started in 1972 with representatives from 35 member companies. Subcommittees of the TIRC were appointed and serve as contacts with organizations providing information services in the patent and technical literature fields of interest to the chemical industry. These subcommittees‘ activities include consultations, as requested;suggestions for new products and recommendations on proposed products;surveys within the industry to aid in planning new patent services;analysis of the quality of the services;and seminars for users to aid in their understanding and use of the services. The work of the TIRC has been helpful to the chemical industry in obtaining needed information services and improvement of existing services and in informing marketers of patent information of the needs of the industry. © 1978, American Chemical Society. All rights reserved.

摘要： Databases which contain patent information and are available to the public via on-line computer networks are listed. A comparison of document and retrieval parameters is made for those on-line databases which provide comprehensive coverage of the chemical patent literature, i.e., CHEMCON, CLAIMS^TM, and WPI. Examples of representative searches run in each of these three databases are presented and discussed. The conclusion is reached that no one database may be relied upon to provide all possible relevant answers. © 1977, American Chemical Society. All rights reserved.