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Waidner-Spahr Library

Chemistry: Finding Patents

Patent Databases

Use these databases for finding patents in chemistry. 

Patent searching tips

Approximately 80% of patents contain information published nowhere else, but patents can be very difficult to find. In fact, some patents are deliberately designed to be hard to retrieve in a patent search. 

In addition, names used in patents may change over time, and the owner of the patent, or assignee, may change as well. 

Try following these tips when beginning a patent search:

  • Find as much information as you can about the drug: alternate names, patent holder, and approximate dates
  • Try a keyword search for the most common names, combined with the patent holder as assignee
  • Make use of the patent citations 

Subject Guide

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Kendall Thompson

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