John A. Hewitson

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Valencia, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
High resolution density measurement profiler using silicon photomul...
- Patent number 9,274,247
- Issue date Mar 1, 2016
- Ronan Engineering Company
- John A. Hewitson
- G01 - MEASURING TESTING
Information Patent Grant
System to completely measure multiple densities at varying levels i...
- Patent number 8,754,374
- Issue date Jun 17, 2014
- Ronan Engineering Company
- John A. Hewitson
- G01 - MEASURING TESTING