Tsutomu Aoyama
46Patents
14h-index
60Co-inventors
84Inventor score
Filing activity: Dec 12, 1978 → Jan 24, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7141330B2 | Secondary battery accomodation case | Emerging Cross-Sectional Technologies | 80 | Expired |
| US4322126A | Mechanical optical switching devices | Physics | 56 | Expired |
| US4794042A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4239331A | Mechanical optical switching device | Physics | 35 | Expired |
| US4303303A | Mechanical optical switching device | Physics | 35 | Expired |
| US6420058B1 | Magnetic recording medium | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6084746A | Magnetic head device | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6313969A | Magnetic disk medium and magnetic recording system | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6144524A | Spin valve magnetoresistance device and method of designing the same | Physics | 17 | Expired |
| US6495240B1 | Patterned magnetic recording medium possessing recording portions with a lower height than the surrounding non-magnetic matrix | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6620532B2 | Magnetic recording medium and magnetic write/read method | Physics | 16 | Expired |
| US6541182B1 | Method for forming fine exposure patterns using dual exposure | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5698286A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 15 | Expired |
| US9666216B1 | Magnetic recording device and magnetic recording method | Physics | 15 | Active |
| US5414554A | Optical semiconductor amplifier | Electricity | 14 | Expired |
| US8264916B1 | Microwave assisted magnetic head and magnetic disk device | Physics | 12 | Active |
| US4741977A | Magnetic sheet | Emerging Cross-Sectional Technologies | 7 | Expired |
| US8300346B2 | Microwave assisted magnetic head | Physics | 7 | Active |
| US9917286B2 | Power storage device, power storage system, electronic apparatus, electric vehicle, and electric power system | Emerging Cross-Sectional Technologies | 5 | Active |
| US10446890B2 | Power storage module, power storage system, electronic apparatus, electric vehicle, and power system | Emerging Cross-Sectional Technologies | 5 | Active |
| US8582239B2 | Microwave assisted magnetic recording head and magnetic recording method therewith | Physics | 4 | Active |
| US6522502B1 | Magnetic head device | Emerging Cross-Sectional Technologies | 4 | Expired |
| US8358127B2 | Apparatus for measuring magnetic field of microwave-assisted head | Physics | 3 | Active |
| US9077018B2 | Battery unit | Emerging Cross-Sectional Technologies | 3 | Active |
| US8427773B2 | Method for magnetic recording using microwave assisted magnetic head | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.