Inventor
Lawrence J. Ryczek
Inventor
Oconomowoc, WI, US
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Kprimary
H03KPulse technique27%
G01RMeasuring electric variables15%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light8%
H02HEmergency protective circuit arrangements8%
B62DMotor vehicles4%
G01DMeasuring not specially adapted for a specific variable4%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure4%
G01NInvestigating or analysing materials by determining their chemical or physical properties4%
G01SRadio direction-finding4%
G02BOptical elements, systems or apparatus4%
PatentTitleYear
6,194,709'Rotary position sensor/transducer employing rotor having color filtering'20015,889,660'Isolated power supply for indicator light'19995,734,263'Electro-optic voltage transducer with extended range and temperature compensation'19985,559,280'Combustion chamber pressure transducer and method of making same'19965,508,606'Direct current sensor'19965,502,373'Magneto-optical current measurement apparatus'19965,471,052'Color sensor system using a secondary light receiver'19955,150,174'Photoelectric color sensor'19925,055,664'Optical distance measuring system using a position sensitive device and a ramp generator driven light source'19914,595,848'Adjustable frequency on/off delay circuit'19864,560,891'ON/OFF delay circuit'19854,560,892'One-shot delay timer'19854,521,748'Adjustable frequency oscillator'19854,521,694'Comparator timer with dual function adjustment'19854,513,343'Short circuit protector having fold-back trip point for solid state switching device'19854,482,818'Universal field convertible 3-wire switch'19844,329,730'D.C. Switch circuit'19824,079,267'Modular IC on-delay timer'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978Patents assigned to CUTLER HAMMER INC (1)· patent assignee history
1978–1984Based in Greendale, WI, US· patent location history
1982–2001Patents assigned to EATON CORP (17)· patent assignee history
1985–1986Based in Nashotah, WI, US· patent location history
1991–2001Based in Oconomowoc, WI, US· patent location history
1998–1999Based in Waukesha, WI, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EATON CORP | 17 | 1982–2001 |
| CUTLER HAMMER INC | 1 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| Oconomowoc, WI, US | 7 | 1991–2001 |
| Nashotah, WI, US | 6 | 1985–1986 |
| Greendale, WI, US | 3 | 1978–1984 |
| Waukesha, WI, US | 2 | 1998–1999 |