% Expired Patents = 16.7

Forward Citations = 147

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1 inventor (with patents filed for the assignee):

John Lawrence Freeouf (6 out of 16 patents)

6 patents: Sort by Forward Citations

1. 7435953 - Quadrupole mass filter length selection (2008-10-14),

2. 6414302 - High photon energy range reflected light characterization of solids (2002-07-02),

3. 6323947 - Angle of incidence accuracy in ultrathin dielectric layer ellipsometry measurement (2001-11-27),

4. 6222199 - Ultrathin layer measurement having a controlled ambient of light path (2001-04-24),

5. 6180432 - Fabrication of single absorber layer radiated energy conversion device (2001-01-30),

6. 6166318 - Single absorber layer radiated energy conversion device (2000-12-26),

Interface Studies Inc. is a research company specializing in human-computer interaction and user experience studies. We provide innovative solutions and expert insights to help businesses improve their digital interfaces and enhance user engagement. Our team of experienced researchers and designers are dedicated to delivering high-quality research and impactful recommendations to our clients.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

6 Patents

#159 in Portland, OR

#496 in Oregon

#44,917 in US

Portland, OR, United States of America

Interface Studies Inc.

Forward Citations = 147

1 inventor:

John Lawrence Freeouf (6 out of 16 patents)

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