Inventor · disambiguated record
John Friedrichs
Also filed as: FRIEDRICHS JOHN · FRIEDRICHS JOHN R
4 granted patents·52 citations·filing 1997–2014
75Inventor score
Files withCONTROLS CORP OF AMERICA3
Top patents by PatentIndex Score
4 records- 0167US5904178AGas filter for regulator valve, and improved regulator valve employing the filterCONTROLS CORP OF AMERICA·Filed 1997·Granted May 18, 1999·33 cites·9 claims
- 0264US10197221B1Air actuated valves switch and software control system for use with cryogenic liquid systemsCONTROLS CORP OF AMERICA·Filed 2014·Granted Feb 5, 2019·3 cites·13 claims
- 0350US6520220B2System for safe and controlled filling of dispensersFiled 2001·Granted Feb 18, 2003·5 cites·13 claims
- 0440US6003545AGas flow control device for high purity, highly corrosive gas serviceCONTROLS CORP OF AMERICA·Filed 1997·Granted Dec 21, 1999·11 cites·12 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →