| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Canada | 4 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Brazil | 2 | |
| #5 | Argentina | 1 | |
| #6 | Germany | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Hungary | 1 | |
| #10 | Italy | 1 | |
| #11 | Japan | 1 | |
| #12 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Mechanical elements | |
| #4 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Pipes | |
| #3 | Making forged metal products | |
| #4 | Forging | |
| #5 | Measuring length, angles and areas |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilson Gerald E | 10 |
| #2 | Chunn William G | 5 |
| #3 | Wilson Gerald Edwin | 5 |
| #4 | Moore Ralph T | 5 |
| #5 | Jierarudo Ii Uiruson | 1 |
| #6 | Wickander Nels | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5479721A | Method and apparatus for measuring the length (MIU) of the internal taper of an internally upset drill pipe tube | |
| US5358285A | Stress relief groove for drill pipe | |
| US5286069A | Stress relief groove for drill pipe | |
| WO9403700A1 | Lightweight drill pipe | |
| US5184495A | Method of internally and externally upsetting the end of a metal tube | |
| US5148876A | Lightweight drill pipe | |
| US5165491A | Method of horizontal drilling |