| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Canada | 2 | |
| #3 | Australia | 1 | |
| #4 | Brazil | 1 | |
| #5 | Colombia | 1 | |
| #6 | EPO (European Patent Office) | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Mexico | 1 | |
| #9 | Norway | 1 | |
| #10 | New Zealand | 1 | |
| #11 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Materials for miscellaneous applications | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Duncan William M Jr | 6 |
| #2 | Von Krosigk James R | 5 |
| #3 | Duncan Jr William M | 4 |
| #4 | Krosigk James R Von | 2 |
| #5 | Duncan William M | 2 |
| #6 | Duncan Jr William Max | 2 |
| #7 | Vonkrosigk James R | 1 |
| #8 | Duncan William Max Jr | 1 |
| #9 | Duncan William Max | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US6593279B2 | Acid based micro-emulsions | |
| US5559085A | Organic liquid base drilling fluid with terpene | |
| US5587354A | Drilling fluid and drilling fluid additive | |
| US5547925A | Low toxicity terpene drilling fluid and drilling fluid additive |