Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Engineering & Physics: Patent searching

ACU Library resources for engineering and physics including online databases, online journals and web sites.


Patentable things are: Useful ,Novel and Nonobvious.

When you are doing a patent search, it is not enough to see if something as been patented. You have to ensure that the item has NOT been patented. Because it's a process of elimination, it can be time consuming.

Helpful tips

- USPTO search: although there is a keyword search feature, there is no controlled vocabulary, therefore you might miss something if, for example, they used 'shield for rain' instead of 'umbrella'.

- If you start with a quick search in the USPTO, a simple way to find related patents is to find the U.S. Classification, and then do a search using that classification to find patents on the same subject.

-CPC classification example:


Patent sites

Citing Patents

Patent searching guides/ help