Read the claims. Not the headline.
Superjunction is a mature concept with extensive patent history. IP research should distinguish foundational architecture, process integration, trench structures, charge-balancing techniques, termination, packaging and application-specific inventions.
Search by architecture
Look for pillar formation, epitaxy, implantation, charge balance, trench gate and termination structures.
Search by material
Separate silicon SJ from SiC SJ and III-nitride/polarization approaches because the process claims can be fundamentally different.
Search by application
Power supplies, PFC, LLC, inverters, EV charging and automotive systems often contain application-specific device or control IP.
External patent research
Use the official or authoritative databases below rather than treating a third-party summary as the legal record.
- Google Patents — search globally by keyword, assignee and classification.
- Espacenet — European Patent Office search and family information.
- WIPO PATENTSCOPE — international patent application search.
- USPTO Patent Center — U.S. prosecution records.
This page is informational only and is not legal advice. Patent status, scope, ownership and enforceability require professional review of the official record.