Frederick L. Maltby
26Patents
13h-index
17Co-inventors
78Inventor score
Filing activity: Jan 2, 1974 → Dec 21, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5510779A | Error compensating instrument system with digital communications | Physics | 47 | Expired |
| US6062070A | Method and apparatus for the sonic measurement of sludge and clarity conditions during the treatment of waste water | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4146834A | Admittance measuring system for monitoring the condition of materials | Physics | 33 | Expired |
| US4235106A | System and method for obtaining compensated level measurements | Physics | 30 | Expired |
| US4757252A | Probe system for measuring the condition of materials | Physics | 29 | Expired |
| US4723122A | Remotely calibratable instrument system | Physics | 22 | Expired |
| US5760309A | Ultrasonic method for material monitoring | Physics | 21 | Expired |
| US4208909A | Admittance sensing probe having multiple sensing elements | Physics | 20 | Expired |
| US5987994A | Ultrasonic method for material monitoring | Physics | 19 | Expired |
| US4568874A | RF Admittance apparatus and method for monitoring the contents of a pipe | Physics | 19 | Expired |
| US4166388A | RF Admittance measuring method and apparatus for determining the level of a conductive liquid | Physics | 17 | Expired |
| US4042497A | Septic system with level control | Emerging Cross-Sectional Technologies | 15 | Expired |
| US3993947A | Admittance measuring system for monitoring the condition of materials | Physics | 13 | Expired |
| US5777550A | High reliability instrument system | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4064753A | RF admittance measuring method and apparatus for determining the level of a conductive liquid | Physics | 12 | Expired |
| US4301681A | Method of using capacitor probe with a semiconductive electrode | Physics | 12 | Expired |
| US6212943A | Method and apparatus for the sonic measurement of sludge and clarity conditions during the treatment on waste water | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4849754A | Remotely calibratable instrument system | Physics | 10 | Expired |
| US4363030A | Fail-safe instrument system | Physics | 9 | Expired |
| US3936738A | Method of and apparatus for measuring the amount of coating material applied to substrates | Physics | 9 | Expired |
| US5539670A | Coating responsive material condition monitoring system | Electricity | 9 | Expired |
| US4332167A | Method of making an RF admittance measuring probe and product thereof | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4573040A | Fail-safe instrument system | Physics | 8 | Expired |
| US4428026A | Two layer probe | Physics | 6 | Expired |
| US4511948A | Two layer probe | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.