| S. No. | Patent identifier |
|---|---|
| 1 | WO2001084959A1 |
| 2 | US4701548A |
| 3 | US4634595A |
| 4 | US4521613A |
| 5 | US6824805B2 |
| 6 | US4515968A |
| 7 | US20020110628A1 |
| 8 | US4590082A |
| 9 | US4599237A |
| 10 | US4552770A |
| 11 | US4514429A |
| 12 | US4652670A |
| 13 | US20230329298A1 |
| 14 | US4694106A |
| 15 | US4504508A |
| 16 | EP1280419A1 |
