Johnson; Stephen Allen
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnson; Stephen Allen.The latest application filed is for "low sulfur coal additive for improved furnace operation".
- Johnson; Stephen Allen - Windham NH
- - Windham NH US
| Patent | Date |
|---|---|
| Low sulfur coal additive for improved furnace operation Grant 11,168,274 - Johnson , et al. November 9, 2 | 2021-11-09 |
| Low Sulfur Coal Additive For Improved Furnace Operation App 20180208865 - Johnson; Stephen Allen ; et al. | 2018-07-26 |
| Low sulfur coal additive for improved furnace operation Grant 9,951,287 - Johnson , et al. April 24, 2 | 2018-04-24 |
| Low Sulfur Coal Additive For Improved Furnace Operation App 20150053123 - Johnson; Stephen Allen ; et al. | 2015-02-26 |
| Low sulfur coal additive for improved furnace operation Grant 08919266 - | 2014-12-30 |
| Low sulfur coal additive for improved furnace operation Grant 8,919,266 - Johnson , et al. December 30, 2 | 2014-12-30 |
| Additives for mercury oxidation in coal-fired power plants Grant 8,439,989 - Baldrey , et al. May 14, 2 | 2013-05-14 |
| Additives For Mercury Oxidation In Coal-fired Power Plants App 20110030592 - Baldrey; Kenneth E. ; et al. | 2011-02-10 |
| Low sulfur coal additive for improved furnace operation Grant 7,332,002 - Johnson , et al. February 19, 2 | 2008-02-19 |
| Low sulfur coal additive for improved furnace operation Grant 6,773,471 - Johnson , et al. August 10, 2 | 2004-08-10 |
| Low sulfur coal additive for improved furnace operation Grant 6,729,248 - Johnson , et al. May 4, 2 | 2004-05-04 |
| Low sulfur coal additive for improved furnace operation App 20040016377 - Johnson, Stephen Allen ; et al. | 2004-01-29 |
| Low sulfur coal additive for improved furnace operation App 20030027014 - Johnson, Stephen Allen ; et al. | 2003-02-06 |
| Low sulfur coal additive for improved furnace operation App 20020184817 - Johnson, Stephen Allen ; et al. | 2002-12-12 |
| Low sulfur coal additive for improved furnace operation App 20020066394 - Johnson, Stephen Allen ; et al. | 2002-06-06 |
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