Chemical Engineering

Search 2 million Canadian patents from 1869 to the present. Full-text documents are available from 1869 forward. This database is produced by the Canadian Intellectual Property Office (CIPO) and is updated weekly.

The largest public patent database on the internet, Espacenet contains 100 million patent documents from more than 90+ countries including Canada and the U.S., plus 2 million records for non-patent literature cited in EPO search reports. Espacenet is produced by the European Patent Office (EPO).

SciFinder-n provides access to more than 100 years of chemistry and related science information through the combined coverage of Chemical Abstracts and MEDLINE.

The USPTO's Patent Public Search system contains more than 11 million US patents issued from 1790 to the present and 7 million US published applications from 2001 forward.