Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Recovery of tungsten and rhenium

Recovery of tungsten and rhenium

US Patent 4604265 · Granted Aug 5, 1986

Estimated economic value: $3,134,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Encapsulated long life electroluminescent phosphor2005
Yttrium tantalate x-ray phosphors with reduced persistence1999
Improved blue-green emitting ZnS:Cu,Cl electroluminescent phosphor and method of1998
ZnS:Cu electroluminescent phosphor and method of making same1997
Small size electroluminescent phosphor1997
Method of making an unactivated yttrium tantalate x-ray phosphor1996
Coated electroluminescent phosphor1993
Method for increasing the brightness and halflife of electroluminescent phosphor1992
Process for producing electroluminescent yellow zinc sulfide phosphors1991
Process for producing tungstosilicic acid1989
Process for producing tungstosilicic acid1989
Process for producing electroluminescent phosphors of improved brightness1989