Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12357981 | Particulate filters | Sabina Silvia Haenel Burmester, David MARVELL, Jonathon Paul Sapsford | 2025-07-15 |
| 11618014 | Method of coating a substrate with a particle stabilized foam | Cecilia Bernadini, Thomas R. Campbell, Guy Richard Chandler, Christopher Daly, Katharine Ann HARDSTONE +1 more | 2023-04-04 |
| 11541383 | Particulate filters | Peter BELLHAM, Andrew Francis Chiffey, Lucy CLOWES, David MARVELL, John Turner +1 more | 2023-01-03 |
| 11207667 | Particulate filters | Peter BELLHAM, Andrew Francis Chiffey, Lucy CLOWES, David MARVELL, John Turner +1 more | 2021-12-28 |
| 6095187 | Solenoid-actuated zero-leakage fail-safe three-position poppet-style four-way hydraulic directional control valve | — | 2000-08-01 |
| 5243761 | Portable rescue tool | Kevin Sullivan, Arnold E. Redsicker | 1993-09-14 |