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Inventor

HELAVA HEIKKI I

US8 patents
⚠️ This page may combine multiple inventors who share the name “HELAVA HEIKKI I”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FOX GROUP INC

5 patents
US6428621B1Aug 6, 2002

Method for growing low defect density silicon carbide

FOX GROUP INC41 citations94
US6534026B2Mar 18, 2003

Low defect density silicon carbide

FOX GROUP INC35 citations91
US6508880B2Jan 21, 2003

Apparatus for growing low defect density silicon carbide

FOX GROUP INC24 citations91
US7056383B2Jun 6, 2006

Tantalum based crucible

FOX GROUP INC46 citations86
US6863728B2Mar 8, 2005

Apparatus for growing low defect density silicon carbide

FOX GROUP INC12 citations82

TECHNOLOGIES AND DEVILES INTER

1 patent
US6890809B2May 10, 2005

Method for fabricating a P-N heterojunction device utilizing HVPE grown III-V compound layers and resultant device

TECHNOLOGIES AND DEVILES INTER34 citations86

PHYSICS INT CO

1 patent
US4494043AJan 15, 1985

Imploding plasma device

PHYSICS INT CO41 citations86

UNIV MISSOURI

1 patent
US10790405B2Sep 29, 2020

Optically controlled power devices

UNIV MISSOURI0 citations51