William C Copenhafer
Inventor
Stats
- 18 US patents issued
- 22 US Applications filed
- most recent filing
This is official USPTO record data
Details
- 18 US Patents Issued
- 22 US Applications Filed
- 263 Total Citation Count
- May 17, 2013 Most Recent Filing
- Jan 29, 1980 Earliest Filing
Work History
| Patent Owner | Applications Filed | Year |
|---|---|---|
| PEROXYCHEM LLC | 2
| 2008
|
| TRONOX ALKALI WYOMING CORPORATION | 1
1 | 2000
2010 |
| GENESIS ALKALI WYOMING, LP | 1
1 2 2 1 2 | 1997
1998 2001 2006 2012 2013 |
| Intermountain Research & Development Corporation | 2
1 3 1 1 | 1980
1982 1985 1992 1993 |
| FMC WYOMING CORPORATION | 2
1 1 1 2 | 1980
1982 1992 1993 2002 |
| FMC CORPORATION | 1
1 | 1986
2008 |
Inventor Addresses
| Address | Duration |
|---|---|
| US | Sep 26, 13 - Sep 26, 13 |
| unknown | Oct 14, 14 - Oct 14, 14 |
| Yardey, PA, US | Feb 12, 09 - Feb 12, 09 |
| Yardley, PA | Aug 11, 81 - Oct 30, 08 |
| Yardley, PA, US | Jan 09, 03 - Jun 04, 13 |
Technology Profile
| Technology | Matters | |
|---|---|---|
| B01D: | SEPARATION | 2 |
| B01J: | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS | 1 |
| C01B: | NON-METALLIC ELEMENTS; COMPOUNDS THEREOF | 4 |
Patents / Publication
| Patents / Publication # | Year of Publication / Issued | Title | Citations |
|---|---|---|---|
| 8858902 | 2014 | Selective removal of sulfide from aqueous alkali solutions | 1 |
| 2013/0248,462 | 2013 | Selective Removal of Sulfide from Aqueous Alkali Solutions | 0 |
| 8454840 | 2013 | Selective removal of sulfide from aqueous alkali solutions | 1 |
| 7998446 | 2011 | Flue gas desulfurization process utilizing hydrogen peroxide | 7 |
| 2011/0014,106 | 2011 | COMBUSTION FLUE GAS SOx TREATMENT VIA DRY SORBENT INJECTION | 3 |
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