Inventor

FRICK ROGER L

US57 patents

⚠️ This page may combine multiple inventors who share the name “FRICK ROGER L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FRICK ROGER L

ROSEMOUNT INC

Process pressure measurement devices with improved error compensation

Process control transmitter

Capacitive pressure sensor for a pressure transmitted where electric field emanates substantially from back sides of plates

Optical switch with moveable holographic optical element

Optical sensor for measuring physical and material properties

Process sensor module having a single ungrounded input/output conductor

Elongated pressure sensor for a pressure transmitter

Sintered pressure sensor for a pressure transmitter

Modular transmitter

Scalable process transmitter

Gas fill system in a pressure transmitter

Scalable process transmitter

Capacitive pressure sensor having circuitry for eliminating stray capacitance

Charged balanced feedback measurement circuit

Multimodulus pressure sensor

Transmitter with internal serial bus

Analog transducer circuit with digital control

Capacitance pressure sensor

Control circuit for current to pressure converter

Apparatus for conveying fluid pressures to a differential pressure transducer

Capacitive pressure transducer with isolated sensing diaphragm

Scalable process transmitter

Pressure transmitter isolation diaphragm

Correction of a pressure indication in a pressure transducer due to variations of an environmental condition

Charge balanced feedback transmitter

Isolator apparatus

Flangeless transmitter coupling to a flange adapter union

Tunable optical filter

Capacitive pressure sensing with moving dielectric

Method of making a pressure transmitter having pressure sensor having cohered surfaces

Suspended diaphragm pressure sensor

Digital transmitter with variable resolution as a function of speed

Capacitive sensing cell made of brittle material

Circuit for capacitive sensor made of brittle material

Vortex shedding flowmeter assembly

Pressure sensor cavity etched with hot POCL3 gas

Transmitter with magnetic zero/span actuator

Transmitter with vernier measurement

Three wire low power transmitter

Differential pressure sensor

Electromagnetic resonant sensor with dielectric body and variable gap cavity

Multi-phase measurement system with synchronized sigma delta converters

Current to pressure converter apparatus

Vortex shedding flowmeter construction

Transducer for converting a varying reactance signal to a DC current signal

Optical switch with 3D waveguides

Integrated transparent substrate and diffractive optical element

Line pressure compensator for a pressure transducer

Vernier voltage-to-digital converter with a storage capacitance selectable in magnitude

KNECHT THOMAS A

Pressure sensing cell using brittle diaphragm