Inventor · Ibaraki, JP

Yoshitada Doi

31Patents

8h-index

29Co-inventors

75Inventor score

Filing activity: Jul 23, 1993 → Jul 1, 2020

Most-cited inventions

Patent	Title	Area	Cited by	Status
US5333647A	Manifold valve	Emerging Cross-Sectional Technologies	48	Expired
US5459953A	Manifold valve	Emerging Cross-Sectional Technologies	33	Expired
US7903383B2	Solenoid valve driving circuit and solenoid valve	Electricity	31	Active
US5586570A	Directional control valve	Emerging Cross-Sectional Technologies	18	Expired
USD828499S1	Electromagnetic valve	General	12	Active
USD725231S1	Electromagnetic valve	General	9	Active
USD835755S1	Solenoid valve	General	9	Active
USD828498S1	Electromagnetic valve	General	8	Active
USD750745S1	Electromagnetic valve	General	8	Active
USD725232S1	Electromagnetic valve	General	7	Active
US5771918A	Device for connecting output pipe to valve	Emerging Cross-Sectional Technologies	7	Expired
USD832400S1	Solenoid valve	General	6	Active
USD734432S1	Pinch valve	General	5	Active
USD801479S1	Electromagnetic valve	General	5	Active
US11278940B2	Compressed fluid discharge control device	Performing Operations; Transporting	5	Active
US6675830B2	Valve unit capable of monitoring output pressure	Emerging Cross-Sectional Technologies	5	Expired
USD734833S1	Electromagnetic valve	General	5	Active
USD830512S1	Solenoid valve	General	4	Active
USD830513S1	Solenoid valve	General	3	Active
USD830511S1	Solenoid valve	General	3	Active
USD834146S1	Solenoid valve	General	2	Active
US10989317B2	Two-way valve	Mechanical Engineering; Lighting; Heating	1	Active
US11408537B2	Fluid control valve	Mechanical Engineering; Lighting; Heating	1	Active
US11867318B2	High-pressure fluid discharge device	Mechanical Engineering; Lighting; Heating	1	Active
US12305674B2	High-pressure fluid discharge device	Performing Operations; Transporting	0	Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.