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The National Science Digital Library provides high quality online educational resources for teaching and learning, with current emphasis on the sciences, technology, engineering, and mathematics (STEM) disciplines—both formal and informal, institutional and individual, in local, state, national, and international educational settings. The NSDL collection contains structured descriptive information (metadata) about web-based educational resources held on other sites by their providers. These providers have contribute this metadata to NSDL for organized search and open access to educational resources via this website and its services.
SureChemOpen is a free resource for researchers who want to search, view and link to patent chemistry. For end-users with professional search and analysis needs, we offer the fully-featured SureChemPro. For enterprise users, SureChemDirect provides all our patent chemistry via an API or a data feed. The SureChem family of products is built upon the Claims® Global Patent Database, a comprehensive international patent collection provided by IFI Claims®. This state of the art database is normalized and curated to provide unprecedented consistency and quality.