Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9964012 | Method for sizing and positioning catalytic converter insulation | Gregory Kiyoshi Koyanagi, Voislav Blagojevic | 2018-05-08 |
| 9926824 | Catalytic converter apparatus | Michael Decesare, Sarry Al-Turk, Amanda Sistilli, Gregory Kiyoshi Koyanagi, Voislav Blagojevic | 2018-03-27 |
| 9260999 | Apparatus and method for engine backpressure reduction | Voislav Blagojevic, Gregory Kiyoshi Koyanagi | 2016-02-16 |
| 9108156 | Catalytic converter apparatus | Michael Decesare, Sarry Al-Turk, Amanda Sistilli, Gregory Kiyoshi Koyanagi, Voislav Blagajevic | 2015-08-18 |
| 9101878 | Catalytic converter apparatus | Michael Decesare, Sarry Al-Turk, Amanda Sistilli, Gregory Kiyoshi Koyanagi, Voislav Blagojevic | 2015-08-11 |
| 9101881 | Catalytic converter apparatus | Michael Decesare, Sarry Al-Turk, Amanda Sistilli, Gregory Kiyoshi Koyanagi, Voislav Blagojevic | 2015-08-11 |
| 8309032 | Catalytic converter apparatus | Michael Decesare, Sarry Al-Turk, Amanda Sistilli, Gregory Kiyoshi Koyanagi, Voislav Blagojevic | 2012-11-13 |