Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8409419 | Conversion of carbon to hydrocarbons | — | 2013-04-02 |
| 8002872 | Methods of recovering and purifying secondary aluminum | — | 2011-08-23 |
| 7955749 | Carbon-fueled fuel cell | — | 2011-06-07 |
| 7544227 | Microwave enhancement of the segregation roast | Derek John Fray | 2009-06-09 |
| 7425315 | Method to recapture energy from organic waste | — | 2008-09-16 |
| 5972302 | Method for the microwave induced oxidation of pyritic ores without the production of sulphur dioxide | James M. Tranquilla | 1999-10-26 |
| 5332560 | Process for the removal of zinc and nickel from copper ammine sulfate solutions | William H. Kruesi | 1994-07-26 |
| 4631176 | Recovery of anhydrous zinc chloride | — | 1986-12-23 |
| 4500498 | Ammonium chloride-ammonium hydroxide strip for the recovery of anhydrous zinc chloride | William H. Kruesi | 1985-02-19 |
| 4324582 | Process for the recovery of copper from its ores | Veryl H. Frahm, Jr. | 1982-04-13 |
| 4323390 | Process for converting brass scrap to copper powder | Veryl H. Frahm, Jr. | 1982-04-06 |
| 4321089 | Process for the recovery of molybdenum and rhenium from their sulfide ores | Veryl H. Frahm, Jr. | 1982-03-23 |
| 4311520 | Process for the recovery of nickel, cobalt and manganese from their oxides and silicates | Veryl H. Frahm, Jr. | 1982-01-19 |
| 4209501 | Chlorides of lead, zinz, copper, silver and gold | — | 1980-06-24 |