O. Stephan Irgens

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St. Charles, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-regulating semi-conductive flexible heating element
- Patent number 9,603,196
- Issue date Mar 21, 2017
- Tech Design LLC
- O. Stephan Irgens
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
SYSTEMS AND METHODS FOR HEATING EQUIPMENT IN HAZARDOUS ENVIRONMENTS
- Publication number 20200072420
- Publication date Mar 5, 2020
- TECH DESIGN LLC
- O. Stephan Irgens
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Application
SELF-REGULATING SEMI-CONDUCTIVE FLEXIBLE HEATING ELEMENT
- Publication number 20140166638
- Publication date Jun 19, 2014
- TECH DESIGN LLC
- O. Stephan Irgens
- H01 - BASIC ELECTRIC ELEMENTS