| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Canada | 4 | |
| #3 | United Kingdom | 3 | |
| #4 | Netherlands | 3 | |
| #5 | Brazil | 2 | |
| #6 | India | 2 | |
| #7 | Mexico | 2 | |
| #8 | Norway | 2 | |
| #9 | Australia | 1 | |
| #10 | Germany | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Mechanical elements | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Pipes | |
| #3 | Indexing scheme relating to hinges | |
| #4 | Unspecified technologies | |
| #5 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Putch Samuel W | 12 |
| #2 | Putch Samuel William | 9 |
| #3 | Nelson Norman A | 3 |
| #4 | Nelson Norman Allen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2007024007A1 | Seal ring and method | |
| BR8902087A | Connection of ratchet and thread to tele-connect a top tubular member and a lower tubular member in a poco | |
| US3893717A | Well casing hanger assembly |