Inventor record

CRITCHFIELD FRANK E

This page previously combined 2different people who filed under the same name. Pick the inventor you're looking for — each profile now covers one disambiguated person.

• 97Frank E. Critchfield21 patent records·732 citations·C08G C08F C08J18 on this record
• 99Richard J. Zdrahala42 patent records·6,808 citations·A61L A61F B01F1 on this record

Inventor identities via PatentsView disambiguation — see methodology.