Fred C. Sittler
36Patents
19h-index
29Co-inventors
81Inventor score
Filing activity: Feb 13, 1986 → Aug 30, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4869282A | Micromachined valve with polyimide film diaphragm | Emerging Cross-Sectional Technologies | 155 | Expired |
| US6484585B1 | Pressure sensor for a pressure transmitter | Physics | 80 | Expired |
| US5731522A | Transmitter with isolation assembly for pressure sensor | Physics | 64 | Expired |
| US4808009A | Integrated semiconductor resistance temperature sensor and resistive heater | Physics | 54 | Expired |
| US5541408A | Micromachined mass spectrometer | Electricity | 54 | Expired |
| US5401963A | Micromachined mass spectrometer | Electricity | 53 | Expired |
| US6516671B2 | Grain growth of electrical interconnection for microelectromechanical systems (MEMS) | Performing Operations; Transporting | 46 | Expired |
| US4909078A | Fluid flow detector | Physics | 42 | Expired |
| US7036381B2 | High temperature pressure transmitter assembly | Physics | 38 | Expired |
| US6520020B1 | Method and apparatus for a direct bonded isolated pressure sensor | Physics | 38 | Expired |
| US6561038B2 | Sensor with fluid isolation barrier | Physics | 29 | Expired |
| US5482678A | Organic chemical sensor | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6508129B1 | Pressure sensor capsule with improved isolation | Physics | 27 | Expired |
| US6473711B1 | Interchangeable differential, absolute and gage type of pressure transmitter | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5808179A | Modular gas chromatograph | Physics | 23 | Expired |
| US6029499A | Modular gas chromatograph | Physics | 23 | Expired |
| US5855850A | Micromachined photoionization detector | Physics | 23 | Expired |
| US6612174B2 | Optical pressure sensor | Physics | 20 | Expired |
| US4791398A | Thin film platinum resistance thermometer with high temperature diffusion barrier | Electricity | 19 | Expired |
| US6848316B2 | Pressure sensor assembly | Physics | 15 | Expired |
| US5502380A | Analog weighted binary absolute position encoder including an array of sense resistors each having material responsive to FWX and nonresponsive to flux | Emerging Cross-Sectional Technologies | 11 | Expired |
| US8898036B2 | Process variable transmitter with acceleration sensor | Physics | 11 | Active |
| US7503220B2 | Pressure sensor using near net shape sintered ceramics | Performing Operations; Transporting | 11 | Active |
| US9200932B2 | Differential pressure transmitter with redundant sensors | Physics | 10 | Active |
| US8132464B2 | Differential pressure transmitter with complimentary dual absolute pressure sensors | Physics | 9 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.