| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 | |
| #2 | France | 2 |
| # | Industry | |
|---|---|---|
| #1 | Materials and metallurgy | |
| #2 | Environmental technology | |
| #3 | Chemical engineering | |
| #4 | Engines, pumps and turbines | |
| #5 | Machines | |
| #6 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Non-metallic elements | |
| #2 | Water treatment | |
| #3 | Separation | |
| #4 | Dry-cleaning fibers | |
| #5 | Siphons | |
| #6 | Swimming pools | |
| #7 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Buxton Hartman Harry | 13 |
| #2 | Hartman Frank E | 4 |
| #3 | Edward Hartman Frank | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1594949A | Liquid-cooled generating unit for high-frequency apparatus | |
| US1544838A | Ozone generator | |
| US1512285A | Ozone generator | |
| US1536180A | Eductor | |
| US1594948A | Ozonizer for water-purifying machines | |
| US1553042A | Method and apparatus for bleaching textile goods | |
| US1594947A | Fluid-diffusing device | |
| US1563849A | Process for purifying and circulating water in swimming pools | |
| US1502188A | Process for softening water | |
| US1541947A | Electrolytic cell | |
| US1513392A | Filter | |
| US1437302A | Ozone generator | |
| US1436251A | Ozone generator | |
| US1594946A | Ozone apparatus |