Tomohiro Koyama
8Patents
3h-index
21Co-inventors
53Inventor score
Filing activity: Oct 23, 2001 → Aug 2, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8053946B2 | Coreless and brushless direct-current motor, Gifford McMahon (GM) cryogenic cooler, pulse tube cryogenic cooler, cryopump, magnetic resonance imaging (MRI) apparatus, superconducting magnet (SCM) apparatus, nuclear magnetic resonance (NMR) apparatus, and cryogenic cooler for cooling semiconductor | Electricity | 15 | Active |
| US6991366B2 | Thermal conductivity measurement method and instrument and method of producing a heat insulating material | Physics | 12 | Expired |
| US7719160B2 | Coreless and brushless direct-current motor, Gifford McMahon (GM) cryogenic cooler, pulse tube cryogenic cooler, cryopump, Magnetic Resonance Imaging (MRI) apparatus, Superconducting Magnet (SCM) apparatus, Nuclear Magnetic Resonance (NMR) apparatus, and cryogenic cooler for cooling semiconductor | Electricity | 3 | Active |
| US8336318B2 | Cryopump and method for diagnosing the cryopump | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8625197B2 | Optical isolator | Chemistry; Metallurgy | 2 | Active |
| US8800304B2 | Cryopump control apparatus, cryopump system, and method for monitoring cryopump | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US7308797B2 | Cryogenic refrigerator | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US9498818B2 | Casting mold and cast article produced using the same | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.