| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 11 | |
| #2 | United States | 9 | |
| #3 | South Africa | 9 | |
| #4 | Germany | 4 | |
| #5 | Sweden | 4 | |
| #6 | Denmark | 3 | |
| #7 | Argentina | 2 | |
| #8 | Australia | 2 | |
| #9 | Brazil | 2 | |
| #10 | Norway | 2 | |
| #11 | India | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Steam traps | |
| #3 | Unspecified technologies | |
| #4 | Separation | |
| #5 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fujiwara K | 30 |
| #2 | Fujiwara Katsuji | 3 |
| Publication | Filing date | Title |
|---|---|---|
| GB1441485A | Discharge apparatus for condensate | |
| US3785555A | Steam trap of the free float type | |
| ZA7205385B | Improvements in as team trap of the free float type | |
| ZA7200240B | Disk type electromagnetic valve | |
| US3757821A | Disk type electromagnetic valve | |
| ZA7101144B | Improvement in a disc-type steam trap | |
| US3724751A | Disc-type steam trap | |
| ZA7003321B | Electrically driven valve apparatus |