| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Australia | 2 | |
| #3 | Canada | 2 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | WIPO (World Intellectual Property Organization) | 2 | |
| #6 | Brazil | 1 | |
| #7 | China | 1 | |
| #8 | Japan | 1 | |
| #9 | Republic of Korea | 1 | |
| #10 | New Zealand | 1 | |
| #11 | Russian Federation | 1 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Cigarettes | |
| #2 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Borstel Reid W Von | 18 |
| #2 | Lesser Craig | 18 |
| Publication | Filing date | Title |
|---|---|---|
| US5746231A | Tobacco smoke filter for removing toxic compounds | |
| WO9722268A1 | Cigarette filter containing microcapsules | |
| US5860428A | Cigarette filter containing a humectant |