| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | WIPO (World Intellectual Property Organization) | 6 | |
| #3 | Canada | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies | |
| #3 | Shaping of plastics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Andrigo Gregory James Alexander | 9 |
| #2 | Sanchez Alfredo | 2 |
| #3 | Gregory James Alexander Andrigo | 1 |
| #4 | Angel Rizalde G | 1 |
| #5 | Pheasey Frederick W | 1 |
| #6 | Andrigo Gregory J A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2017362903A1 | Asymmetric casing centralizer | |
| US2017067300A1 | Deployable bow spring centralizer | |
| WO2015200792A1 | Convertible valve with retained conversion element | |
| US2015354291A1 | Easy-start centralizer with asymetrical bow springs | |
| US2016312566A1 | Wellbore sealing systems and methods | |
| WO2013155610A1 | Segmented mould for cylindrical articles | |
| WO2013120192A1 | Casing centralizing device |