Penberthy, Inc.
6Patents
0Active
6Granted
30Portfolio score
Filing activity: Sep 17, 1993 → Aug 9, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5461321A | Apparatus and method for measuring capacitance from the duration of a charge-discharge charge cycle | Physics | 65 | Expired |
| US5481197A | High pressure, leak resistant explosionproof capacitance probe | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5554937A | Apparatus and method for sensing material level by capacitance measurement | Physics | 19 | Expired |
| US5465041A | Bipolar tracking current source/sink with ground clamp | Physics | 6 | Expired |
| US5895058A | Laminated gasket | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6390016B1 | Sight flow indicator | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.