Frederick Y. Cho
34Patents
12h-index
29Co-inventors
81Inventor score
Filing activity: Feb 4, 1974 → Aug 28, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4701008A | Optical waveguide including superstrate of niobium or silicon oxynitride and method of making same | Physics | 81 | Expired |
| US4652290A | Method for making optical channel waveguides and product manufactured thereby | Physics | 63 | Expired |
| US5212115A | Method for microelectronic device packaging employing capacitively coupled connections | Emerging Cross-Sectional Technologies | 61 | Expired |
| US5237235A | Surface acoustic wave device package | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5265267A | Integrated circuit including a surface acoustic wave transformer and a balanced mixer | Electricity | 46 | Expired |
| US4626775A | Radio frequency probing apparatus for surface acoustic wave devices | Physics | 29 | Expired |
| US3931597A | Apparatus and method for phase-encoded surface wave devices | Electricity | 21 | Expired |
| US4434383A | Temperature stable surface acoustic wave device | Electricity | 15 | Expired |
| USD359960S | Clip-on earpiece for a portable handset telephone | General | 14 | Expired |
| US5296824A | Low loss wide bandwidth parallel channel acoustic filter | Electricity | 13 | Expired |
| US5414214A | Resistance heated, sealed microfabricated device package method and apparatus | Electricity | 12 | Expired |
| US5254962A | Combined acoustic wave device and ceramic block filter structure | Electricity | 12 | Expired |
| US4546283A | Conductor structure for thick film electrical device | Electricity | 12 | Expired |
| US4450374A | Oxygen-plasma passivated and low scatter acoustic wave devices | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4668909A | Piezoelectric material testing method and apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5119172A | Microelectronic device package employing capacitively coupled connections | Electricity | 9 | Expired |
| US4506239A | Compound surface acoustic wave matched filters | Electricity | 9 | Expired |
| US5270606A | Processing robust acoustic reflectors | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5047363A | Method and apparatus for reducing heterostructure acoustic charge transport device saw drive power requirements | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5212420A | Method and apparatus for surface acoustic wave reflector grating | Electricity | 7 | Expired |
| US5420472A | Method and apparatus for thermal coefficient of expansion matched substrate attachment | Electricity | 7 | Expired |
| US5301420A | Method for manufacturing a light weight circuit module | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4612274A | Electron beam/optical hybrid lithographic resist process in acoustic wave devices | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5635883A | Acoustic wave filter with filter-shaping element and method | Electricity | 5 | Expired |
| US5475311A | Ionization gas analyzer and method | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.