Patents per Year
Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5964580 | Positive displacement pump having a ratchet drive guide for dispersing cyclic compression stresses over the circumference of an internal flexible member | — | 1999-10-12 | |
| 5439259 | Coupling and method for folding back a pipe and using for it and its apparatus | Kimio Okamoto | 1995-08-08 | |
| 5224738 | Double piping structure | — | 1993-07-06 | |
| 5131806 | Pump | — | 1992-07-21 | $14,000 |
| 4920863 | Plunger pump | — | 1990-05-01 | $26,000 |
| 4680118 | Pleated and sealed filter cartridge with connected film | — | 1987-07-14 | $148,000 |