Issued Patents All Time
Showing 25 most recent of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12268336 | Elevated colander | — | 2025-04-08 |
| 9895503 | Mask system | Amal Shirley Amarasinghe, Timothy Tsun-Fai Fu, Perry David Lithgow, Jim Saada, Fiachra Marcus Sweeney | 2018-02-20 |
| 9828249 | Operational conditions and method for production of high quality activated carbon | — | 2017-11-28 |
| 9205406 | Operational conditions and method for production of high quality activated carbon | — | 2015-12-08 |
| 9108884 | Metakaolin production and enhancement of industrial minerals | — | 2015-08-18 |
| 9109801 | Coal heat-treatment process and system | — | 2015-08-18 |
| 9027558 | Headgear connection assembly for a respiratory mask assembly | Memduh Guney, Amal Shirley Amarasinghe, Perry David Lithgow, Milind Chandrakant Raje, Aaron Samuel Davidson | 2015-05-12 |
| 8763612 | Headgear connection assembly for a respiratory mask assembly | Memduh Guney, Amal Shirley Amarasinghe, Perry David Lithgow, Milind Chandrakant Raje, Aaron Samuel Davidson | 2014-07-01 |
| D707789 | Combined skinner and survival knife | — | 2014-06-24 |
| 8505535 | Mask system | Amal Shirley Amarasinghe, Timothy Tsun-Fai Fu, Perry David Lithgow, Jim Saada, Fiachra Marcus Sweeney | 2013-08-13 |
| 8309052 | Carbon heat-treatment process | — | 2012-11-13 |
| 8031910 | Method and apparatus for analyzing quality traits of grain or seed | David Foster, Doris M. Rimathe | 2011-10-04 |
| 7861715 | Mask system | Amal Shirley Amarasinghe, Timothy Tsun-Fai Fu, Perry David Lithgow, Jim Saada, Fiachra Marcus Sweeney | 2011-01-04 |
| 7841345 | Headgear connection assembly for a respiratory mask assembly | Memduh Guney, Amal Shirley Amarasinghe, Perry David Lithgow, Milind Chandrakant Raje, Aaron Samuel Davidson | 2010-11-30 |
| D586258 | Clip for respiratory mask | Memduh Guney, Amal Shirley Amarasinghe, Perry David Lithgow, Milind Chandrakant Raje, Aaron Samuel Davidson | 2009-02-10 |
| D579105 | Portion of mask | Amal Shirley Amarasinghe, Timothy Tsun-Fai Fu, Perry David Lithgow, Jim Saada, Fiachra Marcus Sweeney | 2008-10-21 |
| D576272 | Nasal mask | Amal Shirley Amarasinghe, Timothy Tsun-Fai Fu, Perry David Lithgow, Jim Saada, Fiachra Marcus Sweeney | 2008-09-02 |
| RE40208 | Pneumatic flash calciner thermally insulated in feed storage silo | — | 2008-04-01 |
| D560796 | Mask | Amal Shirley Amarasinghe, Timothy Tsun-Fai Fu, Perry David Lithgow, Jim Saada, Fiachra Marcus Sweeney | 2008-01-29 |
| 7264781 | Calcining plant and method | — | 2007-09-04 |
| D539418 | Nasal mask | Amal Shirley Amarasinghe, Timothy Tsun-Fai Fu, Perry David Lithgow, Jim Saada, Fiachra Marcus Sweeney | 2007-03-27 |
| 7115235 | Rotating surface of revolution reactor with temperature control mechanisms | Colin Ramshaw, Roshan Jeet Jee Jachuck, Ian Henderson | 2006-10-03 |
| 7041751 | Method of polymerizing predetermined chemical components | Roshan Jeet Jee Jachuck, Ian Henderson | 2006-05-09 |
| D519206 | Nasal mask | Amal Shirley Amarasinghe, Timothy Tsun-Fai Fu, Perry David Lithgow, Jim Saada, Fiachra Marcus Sweeney | 2006-04-18 |
| 7014820 | Rotating surface of revolution reactor with feed and collection mechanisms | Colin Ramshaw, Roshan Jeet Jee Jachuck, Ian Henderson | 2006-03-21 |