Kejr Engineering, Inc.
11Patents
0Active
11Granted
28Portfolio score
Filing activity: Sep 17, 1990 → Aug 27, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5186263A | Soil sample probe | Fixed Constructions | 34 | Expired |
| US5542481A | Drive point locking method and apparatus | Fixed Constructions | 20 | Expired |
| US5639956A | Permeable membrane soil probe | Physics | 19 | Expired |
| US6029355A | Device for cutting soil sampling tubing | Performing Operations; Transporting | 17 | Expired |
| US5606139A | Soil sample probe with retaining ring for holding core-catching structure within the probe | Physics | 13 | Expired |
| US5588771A | Connector for coupling a pair of rods | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5503031A | Ground water sampling device | Fixed Constructions | 7 | Expired |
| US5635653A | Ground water sampling device | Fixed Constructions | 7 | Expired |
| USD397345S | Probe rod thread | General | 3 | Expired |
| US5553979A | Pull cap for attachment to a probe rod | Physics | 3 | Expired |
| US5612498A | Ground water sampling device | Fixed Constructions | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.