Combines patent information indexed from over 50 patent issuing authorities in the Derwent World Patent Index (1963-present) with patent citations indexed from the Derwent Patents Citation Index (1973-present).
Chemical Abstracts literature from 1902 to the present. For UD students, staff & faculty only. UDRI employees are not eligible to use this database. New Users must register for an account with their UD email address.
An official Patent and Trademark Resource Center of the United States Patent and Trademark Office (USPTO) with a formal agreement to provide assistance to the general public in the use of patent and trademark resources provided by the USPTO.