| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Basic communication technologies | |
| #2 | Electrical machinery and energy | |
| #3 | Measurement | |
| #4 | Telecommunications | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Modulation | |
| #2 | Generation of oscillations | |
| #3 | Electric discharge tubes | |
| #4 | Measuring electric variables | |
| #5 | Unspecified technologies | |
| #6 | Magnets and transformers | |
| #7 | Amplifiers | |
| #8 | Antennas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Terman Frederick E | 13 |
| #2 | Hansen William W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2218487A | Directional radiating system | |
| US2215672A | High-efficiency amplifier | |
| US2152753A | Modulator | |
| US2055737A | Radio receiving system | |
| US1915558A | Modulation meter | |
| US1978918A | Thermionic tube | |
| US1950759A | Variable reactance circuit | |
| US2037202A | Variable vacuum tube resistor | |
| US2000304A | Thermionic tube | |
| US1976904A | Loss metering circuit | |
| US2055736A | Frequency changing system | |
| US2000362A | Frequency multiplier | |
| US1816448A | Coil construction |