| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Italy | 2 | |
| #3 | South Africa | 2 | |
| #4 | Brazil | 1 | |
| #5 | Germany | 1 | |
| #6 | Israel | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Environmental technology | |
| #3 | Telecommunications | |
| #4 | Semiconductors | |
| #5 | Surface technology and coating | |
| #6 | Machines | |
| #7 | Measurement | |
| #8 | Control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kilby J | 8 |
| #2 | Lathrop J | 3 |
| #3 | Porter W | 3 |
| #4 | Kilby C | 1 |
| #5 | Schweitzer R | 1 |
| #6 | Crady J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3793487A | System for screening telephone calls | |
| US3777067A | System for disabling incoming telephone calls | |
| US3784721A | System for screening telephone calls | |
| US3781866A | Binary encoding switch |