Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6079959 | Reciprocating pump | Kenji A. Kingsford, David L. Henderson, Van Trong Tran, David Martinez | 2000-06-27 |
| 6000416 | Compact valve with rolling diaphragm poppet | Kenji A. Kingsford, Mario Fregoso, David Martinez | 1999-12-14 |
| 5652391 | Double-diaphragm gauge protector | Kenji A. Kingsford | 1997-07-29 |
| 4983104 | Bellows-type pump | Kenji A. Kingsford | 1991-01-08 |
| 4981418 | Internally pressurized bellows pump | Kenji A. Kingsford | 1991-01-01 |