Leo W Beckstead
Inventor
Stats
- 22 US patents issued
- 22 US Applications filed
- most recent filing
This is official USPTO record data
Details
- 22 US Patents Issued
- 22 US Applications Filed
- 157 Total Citation Count
- Sep 25, 1989 Most Recent Filing
- Jan 19, 1981 Earliest Filing
Work History
| Patent Owner | Applications Filed | Year |
|---|---|---|
| Amax Inc. | 11
3 3 1 2 1 1 | 1981
1982 1984 1986 1987 1988 1989 |
Inventor Addresses
| Address | Duration |
|---|---|
| Arvada, CO | Dec 01, 81 - Oct 16, 90 |
Technology Profile
| Technology | Matters | |
|---|---|---|
| C01G: | COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F | 19 |
| C09C: | TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES | 1 |
| C22B: | PRODUCTION OR REFINING OF METALS | 3 |
Patents / Publication
| Patents / Publication # | Year of Publication / Issued | Title | Citations |
|---|---|---|---|
| 4963336 | 1990 | Purification of APT | 2 |
| 4917726 | 1990 | Chromium recovery process | 6 |
| 4900522 | 1990 | Separation of nickel and cobalt from sulfate solutions by solvent extraction | 32 |
| 4810303 | 1989 | Production of hexagonal cadmium sulfide pigment | 0 |
| 4761177 | 1988 | Production of cobalt and nickel powder | 3 |
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