William C. Drach
23Patents
10h-index
11Co-inventors
68Inventor score
Filing activity: Jan 4, 1991 → Mar 12, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5212463A | Planar ferro-electric phase shifter | Electricity | 168 | Expired |
| US5307033A | Planar digital ferroelectric phase shifter | Electricity | 167 | Expired |
| US5561407A | Single substrate planar digital ferroelectric phase shifter | Electricity | 160 | Expired |
| US5479139A | System and method for calibrating a ferroelectric phase shifter | Electricity | 135 | Expired |
| US5334958A | Microwave ferroelectric phase shifters and methods for fabricating the same | Electricity | 124 | Expired |
| US5680141A | Temperature calibration system for a ferroelectric phase shifting array antenna | Electricity | 48 | Expired |
| US6239744A | Remote tilt antenna system | Electricity | 42 | Expired |
| US5798675A | Continuously variable phase-shifter for electrically down-tilting an antenna | Electricity | 36 | Expired |
| US5617103A | Ferroelectric phase shifting antenna array | Electricity | 35 | Expired |
| US6172642A | Radar system having a ferroelectric phased array antenna operating with accurate, automatic environment-calibrated, electronic beam steering | Physics | 18 | Expired |
| US5052183A | Open cryogenic microwave test chamber | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5486992A | High voltage direct current power supply with feedback control and circuit protection | Electricity | 9 | Expired |
| US6677896B2 | Remote tilt antenna system | Electricity | 7 | Expired |
| USH1306H | Method of using an improved solder to bridge a nonmetallic gap between | General | 4 | Active |
| US7192661B1 | Rare earth metal compounds for use in high critical temperature thin film super-conducting antennas | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6827915B1 | Rare earth metal compounds for use in high critical temperature thin film super-conductors, ferroelectrics, pyroelectrics, piezoelectrics, and hybrids | Electricity | 2 | Expired |
| US5216395A | Quarter wave high voltage DC block covered with a polyurethane insulating layer | Electricity | 1 | Expired |
| US5451866A | Quick-mount measuring device for evaluating the electrical characteristics of ferroelectric materials | Physics | 1 | Expired |
| US7306855B1 | Rare earth metal compounds for use in high critical temperature thin film structures for super-conductors, ferroelectrics, pyroelectrics, piezoelectrics, and hybrids | Emerging Cross-Sectional Technologies | 0 | Expired |
| US7312182B1 | Rare earth metal compounds for use in high critical temperature thin film super-conductors | Emerging Cross-Sectional Technologies | 0 | Expired |
| US6859111B1 | Voltage tuned ferroelectric resonant oscillator | Electricity | 0 | Expired |
| US7336981B1 | Rare earth metal compounds for use in high critical temperature Josephson junctions | Emerging Cross-Sectional Technologies | 0 | Active |
| US5487014A | Low cost automated system for evaluating the electrical characteristics of ferroelectric materials | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.