The Patent Practice of

Szmanda & Shelnut, LLC

Our Services
James G. Shelnut, Ph.D
Charles R. Szmanda, Ph.D.
Fee Schedule
Patent Download


The following are some of our favorite links.  We hope you find them useful.*

See our blog at


Patent search Engines

USPTO patent and application search.

European Patent Office - Patent and application search.

Google Patents - Patent and application search engine.

SumoBrain - An excellent international search engine for patents.

PatentLens - An excellent international search engine for patents.


Patent Downloaders

GETIPDL - Excellent patent downloader - patents from around the world.

Google Patents - Patent and application search engine. - Download U.S. patent documents for free.

Patent Retriever - Download world patent documents for free.

JPO database in English - Not easy to use but still good.


United States Patent and Trademark Office

USPTO web site

Current USPTO fee schedule


Technical References

NIST Chemistry Web Book - Excellent database for common compounds.

PubMed - The best search engine for biomedical literature.

PubChem - Chemical structures, bioactivity, safety and literature.

Sigma-Aldrich Catalog - Great source of chemical and materials data.

MatWeb - Great source of property data for all kinds of materials.

Martindale's Reference Desk - An amazing collection of references. - Almost any conversion you can think of.

Engineers Edge - Engineering, manufacturing and design reference.

MIT Open Courseware - Notes from most courses given at MIT.


Interesting Articles

The Complete Inventor's Guide, from


*Please note.  We cannot support or answer questions about the individual websites listed here.  Please contact the individual site webmasters if you have questions.  Moreover, we are not responsible for the material found in any of these links.



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This site was last updated 04/08/16