| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 71 | |
| #2 | Canada | 27 | |
| #3 | France | 18 | |
| #4 | Germany | 17 | |
| #5 | United States | 15 | |
| #6 | United Kingdom | 10 | |
| #7 | Belgium | 9 | |
| #8 | Netherlands | 7 | |
| #9 | Austria | 6 | |
| #10 | Switzerland | 6 | |
| #11 | Spain | 5 | |
| #12 | Brazil | 4 | |
| #13 | Italy | 4 | |
| #14 | Australia | 3 | |
| #15 | Norway | 2 | |
| #16 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Chemical engineering | |
| #5 | Electrical machinery and energy | |
| #6 | Engines, pumps and turbines | |
| #7 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Steam traps | |
| #2 | Venting or aerating devices | |
| #3 | Unspecified technologies | |
| #4 | Separation | |
| #5 | Measuring volume | |
| #6 | Electric switches | |
| #7 | Pumps | |
| #8 | Steam generation | |
| #9 | Pistons and sealings | |
| #10 | Measuring speed and acceleration |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fujiwara Katsuji | 143 |
| #2 | Katsuji Fujiwara | 13 |
| #3 | Yokoyama Takeshi | 1 |
| #4 | Hiraoka-Cho | 1 |
| #5 | Kakogawa-Shi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPS5635898A | Float type steam trap with bimetal valveeopening means | |
| JPS5533980A | Level control valve | |
| JPS5477327A | Disc type steam trap | |
| JPS5473329A | Free float system steam trap | |
| JPS5465565A | Water hammer generator | |
| JPS5375524A | Disc type steam trap | |
| JPS5410809A | Condensation recovery device | |
| JPS53116526A | Free float type trap | |
| JPS53109226A | Free float type trap | |
| JPS5380021A | Free float type trap | |
| JPS5286534A | Ball valve | |
| JPS5345721A | Line type free float system trap | |
| JPS5285718A | Air trap | |
| JPS52115432A | Ball valve | |
| JPS52151933A | Float type trap | |
| JPS5358821A | Bimetal type steam trap | |
| JPS51128727A | Temperature control valve with thermometer | |
| JPS52127630A | Ball valve | |
| JPS52103722A | Differential pressure responding valve system steam trap device | |
| JPS51109522A | DAIYORYOGATASUCHIIMUTORATSUPU |