Inventor

STIKSMA JOHN

CA6 patents

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

CHEVRON USA INC

2 patents

US7846404B2Dec 7, 2010

Process for separating and recovering base metals from used hydroprocessing catalyst

CHEVRON USA INC31 citations89

US7837960B2Nov 23, 2010

Process for separating and recovering base metals from used hydroprocessing catalyst

CHEVRON USA INC31 citations89

DYNATEC CORP

2 patents

US6656247B1Dec 2, 2003

Selective precipitation of manganese from magnesium-containing solutions

DYNATEC CORP30 citations89

US5993514ANov 30, 1999

Process for upgrading copper sulphide residues containing nickel and iron

DYNATEC CORP12 citations65

698638 ALBERTA LTD

1 patent

US5711929AJan 27, 1998

Purification of elemental sulphur

698638 ALBERTA LTD15 citations70

STIKSMA JOHN

1 patent

US8221710B2Jul 17, 2012

Recovering metals from complex metal sulfides

STIKSMA JOHN1 citations42