1. Use accurate keywords, accurate classification numbers and other information;
2. Use coexistence operator, proximity operator and frequency operator;
3. Using database transfer skills to effectively use the characteristics of each database;
4. Use semantic retrieval to sort the relevance;
5. Use focusing, highlighting and other display methods for quick screening.
The common noise reduction methods in S system are as follows: first, based on the special retrieval fields in the database, such as CNABS special words such as use effect, technology and use field, the examiner can simply limit the paragraphs reflecting technical problems, technical schemes and technical fields in the abstract information through the above fields; Secondly, when the retrieval results are large, proximity operators, coexistence operators and frequency operators should be used reasonably.
In addition to reading technical dictionaries, English abstracts, intermediate documents and other common access channels, the expression forms of retrieval elements also need to pay attention to the commodity names in the field of coatings.
As for the parts represented by trade names, the trade names may have reached a fairly well-known level among those skilled in the art.. Chemicals represented by trade names have relatively stable structural and compositional properties because they are produced according to industrial standards. When the trade name of a chemical substance is mentioned, people in the technical field will immediately think of the structure and composition of the chemical substance.