论文部分内容阅读
美国《化学文摘》(CA)和英国德温特《世界专利索引》(WPI)中都编有登记号索引。CA中的登记号是由美国化学文摘社给化学成分、结构和化学键明确的每一种化学物质所编的号码,是代表一种化学物质的编号,一种化学物质可能有几种名称,但只有一个登记号;WPI中的登记号是德温特出版公司对自己收到的每件基本专利给予的编号,每件相同专利都以其基本专利的登记号作为自己的登记号,同一件专利在不同国家获得批准,其专利号不同,但登记号却是相同的。这两种登记号有一个共同的特点,那就是不重复性。根据这一特点,在实际检索过程中巧用登记号及其索引,往往能简化检索过程并解决一些棘手问题。
The United States, “Chemical Abstracts” (CA) and the United Kingdom Derwent “World Patent Index” (WPI) are registered index number. The registration number in CA is assigned by the Chemical Abstracts Service for each chemical identified by chemical composition, structure, and chemical bond, is the number that represents a chemical that may have several names, There is only one registration number. The registration number in WPI is the number assigned to each basic patent received by Derwent Publishing Corporation. Each identical patent uses its registration number of its basic patent as its registration number. The same patent In different countries have been approved, the patent number is different, but the registration number is the same. One of the common features of these two registration numbers is that they are not repetitive. According to this feature, using the registration number and its index skillfully in the actual retrieval process often simplifies the retrieval process and solves some difficult problems.