Ray C. Delcher
21Patents
9h-index
20Co-inventors
75Inventor score
Filing activity: Dec 28, 1987 → Feb 24, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7616095B2 | Electronic token to provide sequential event control and monitoring | Emerging Cross-Sectional Technologies | 64 | Active |
| US4772789A | Leak imaging using differential absorption | Physics | 51 | Expired |
| US7263245B2 | Method and apparatus for optically powering and multiplexing distributed fiber optic sensors | Electricity | 21 | Expired |
| US7356209B2 | Method and apparatus for optically powering and multiplexing distributed fiber optic sensors | Electricity | 21 | Active |
| US8046588B2 | Audit trail in a programmable safety instrumented system via biometric signature(s) | Physics | 19 | Active |
| US7533798B2 | Data acquisition and processing system for risk assessment | Emerging Cross-Sectional Technologies | 17 | Active |
| US7932809B2 | RFID/biometric area protection | Emerging Cross-Sectional Technologies | 11 | Active |
| US7508512B1 | Continuous optical self-alignment for light curtains and optical presence sensors for simplification and maintenance of alignment | Physics | 10 | Active |
| US8339584B2 | Velocity measuring system | Physics | 10 | Active |
| US7522066B2 | Systems and methods that evaluate distance to potential hazards utilizing overlapping sensing zones | Mechanical Engineering; Lighting; Heating | 9 | Active |
| US10571395B2 | Universal rapid diagnostic test reader with trans-visual sensitivity | Electricity | 8 | Active |
| US7313502B2 | System and method to combine and weight multiple sensors with overlapping sensing range to create a measurement system utilized in a high integrity or safety environment | Physics | 7 | Expired |
| US7539550B2 | Safety versus availability graphical user interface | Physics | 4 | Active |
| US7657814B2 | Optimizing availability and safety by reconfiguring and auto-adjusting redundancy | Physics | 4 | Active |
| US8804103B2 | Velocity measuring system | Physics | 3 | Active |
| US7652759B1 | Industrial device with adaptive optics | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8743351B2 | Velocity measuring system | Physics | 2 | Active |
| US7961369B2 | Large-angle agile laser beam steering apparatus and method | Physics | 1 | Active |
| US7442917B1 | Method for using a single optical emitter/receiver pair for creating a light curtain using LCD+MEMS technology for beam deflection | Physics | 1 | Expired |
| US12222287B2 | Universal rapid diagnostic test reader with trans-visual sensitivity | Electricity | 0 | Active |
| US9709594B1 | Velocity measuring system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.