There are multiple types of patent search available on CAS Scientific Patent Explorer, and each one of them has different advantages in various scenarios:
Simple: Contrary to its name, Simple search tends to be used by our most advanced users. It consists of not much more than a search bar in which you'll have to enter your own Boolean query.
Advanced: With Advanced search, you can define exactly what you want to find. It is possible to create a query piece by piece, selecting the different fields that your keywords are going to be searched in, and the operators that will help you make your query as specific as you need it to be. It allows for the most control over exactly what comes back in your search.
Bulk: Bulk patent search enables you to search up 5000 patent publication numbers (PN field), application numbers (APNO field), or a combination of both.
Chemical: Chemical search enables you to jump from chemical structure searches to related patents and back again in one seamless workflow. You may also search by Markush structure.