Isao Harada
13Patents
8h-index
29Co-inventors
72Inventor score
Filing activity: Jul 10, 1985 → Jul 6, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5191503A | Lightning surge protector | Electricity | 21 | Expired |
| US4644914A | Valve mechanism of internal combustion engine | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4975259A | Method of liquefying and condensing nitrogen trifluoride and a method of purifying nitrogen trifluoride | Chemistry; Metallurgy | 16 | Expired |
| US5183647A | Method for purifying nitrogen trifluoride gas | Chemistry; Metallurgy | 11 | Expired |
| US4960581A | Method for preparing gaseous metallic fluoride | Chemistry; Metallurgy | 11 | Expired |
| US5084156A | Electrolytic cell | Chemistry; Metallurgy | 11 | Expired |
| US4948571A | Process for purifying nitrogen trifluoride gas | Chemistry; Metallurgy | 10 | Expired |
| US4980144A | Process for purifying nitrogen trifluoride gas | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5728642A | Exhaust gas treating agent and a method of treating exhaust gas using the agent | Performing Operations; Transporting | 3 | Expired |
| US7021487B2 | Processing method for high pressure gas container and halogen containing gas filled in said container | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US7267808B2 | Aluminum nitride powder, method for producing the same and use thereof | Chemistry; Metallurgy | 1 | Expired |
| US6284209A | Agent for and process of treating exhaust gas | Performing Operations; Transporting | 1 | Expired |
| US5346682A | Process for the preparation of partially-substituted fluorosilane | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.