| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | France | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Argentina | 2 | |
| #5 | Australia | 2 | |
| #6 | Belgium | 2 | |
| #7 | Canada | 2 | |
| #8 | Germany | 2 | |
| #9 | Denmark | 2 | |
| #10 | Spain | 2 | |
| #11 | Italy | 2 | |
| #12 | Japan | 2 | |
| #13 | Luxembourg | 2 | |
| #14 | Netherlands | 2 | |
| #15 | Norway | 2 | |
| #16 | Portugal | 2 | |
| #17 | Brazil | 1 | |
| #18 | Greece | 1 | |
| #19 | Ireland | 1 | |
| #20 | New Zealand | 1 | |
| #21 | Sweden | 1 | |
| #22 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Basic materials chemistry | |
| #3 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Crosby Gary A | 8 |
| #2 | Rapp Walter W | 7 |
| #3 | Sullivan Dennis William | 5 |
| #4 | Sullivan D | 4 |
| #5 | Sullivan D W | 3 |
| #6 | Sullivan Dennis W | 3 |
| #7 | Rapp W | 2 |
| #8 | Crosby G | 2 |
| #9 | Rapp W W | 2 |
| #10 | Crosby G A | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US4592291A | Sewage treatment method and apparatus | |
| US4391703A | Marine sewage treatment with biological filter | |
| US4512553A | Jack-up unit | |
| US4337151A | Method and apparatus for pulsed timed control for sludge return line | |
| US4317723A | Sewage treatment | |
| US4268389A | Sewage treatment | |
| US4253957A | Marine sewage disposal |