| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Argentina | 2 | |
| #3 | Australia | 2 | |
| #4 | Brazil | 2 | |
| #5 | Canada | 2 | |
| #6 | EPO (European Patent Office) | 2 | |
| #7 | Spain | 2 | |
| #8 | Mexico | 2 | |
| #9 | Norway | 2 | |
| #10 | WIPO (World Intellectual Property Organization) | 2 | |
| #11 | South Africa | 2 | |
| #12 | Republic of Korea | 1 | |
| #13 | Russian Federation | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Earth drilling | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hensley Clifford Joe | 17 |
| #2 | Hensley Clifford J | 8 |
| #3 | Clifford J Hensley | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US5635080A | Filter system with external scrubber | |
| US5407574A | Filter media for filter systems | |
| US4966698A | Filter system and scrubber | |
| US4826609A | Filter media for filter systems | |
| US4787987A | Filter apparatus and method | |
| US4496464A | Filter apparatus and method | |
| US4354553A | Corrosion control downhole in a borehole |