Koichi Terunuma
58Patents
15h-index
51Co-inventors
83Inventor score
Filing activity: Aug 4, 1994 → Apr 26, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6563681B1 | Magnetoresistance effect film and magnetoresistance effect type head | Physics | 109 | Expired |
| US6998150B2 | Method of adjusting CoFe free layer magnetostriction | Emerging Cross-Sectional Technologies | 72 | Expired |
| US6151193A | Thin film magnetic head | Physics | 40 | Expired |
| US7477491B2 | GMR device having an improved free layer | Emerging Cross-Sectional Technologies | 30 | Active |
| US6591481B2 | Method of manufacturing magnetoresistive device and method of manufacturing thin-film magnetic head | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6040965A | Thin film magnetic head having grooves which become gradually shallower | Physics | 25 | Expired |
| US6657826B2 | Magnetoresistive device and method of manufacturing same, thin-film magnetic head and method of manufacturing same, head gimbal assembly and hard disk drive | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6381093B2 | Thin film magnetic head with magnetic films with increasing widths from a surface facing a recording medium | Physics | 23 | Expired |
| US6329211A | Method of manufacturing thin film magnetic head | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6721140B2 | Magnetoresistive device and method of manufacturing same and thin-film magnetic head and method of manufacturing same | Physics | 22 | Expired |
| US6636395B1 | Magnetic transducer and thin film magnetic head using the same | Physics | 21 | Expired |
| US6137652A | Thin film magnetic head with separated yoke and pole tips | Physics | 18 | Expired |
| US7046487B2 | Magnetoresistive effective element, thin film magnetic head, magnetic head device and magnetic recording/reproducing device | Physics | 18 | Expired |
| US6169642A | Thin-film magnetic head having a three-layer pole tip structure | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6188543A | Thin film magnetic head | Physics | 15 | Expired |
| US6545848B1 | Magnetic transducer, thin film magnetic head and method of manufacturing the same | Physics | 15 | Expired |
| US6477018B1 | Thin-film magnetic head and method of manufacturing the same | Physics | 14 | Expired |
| US6163437A | Magnetic head with spin valve effect magnetoresistive element and its manufacturing method | Physics | 14 | Expired |
| US7791838B2 | Magnetic head apparatus and magnetic recording and reproducing apparatus | Physics | 14 | Active |
| US7134184B2 | Process of manufacturing a narrow track CCP head with bias cancellation | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6178065A | Thin film magnetic head and manufacturing method of the head | Physics | 10 | Expired |
| US5978184A | Magnetoresistive effect element and thin film magnetic head with the element | Physics | 9 | Expired |
| US5558944A | Magnetic head and a process for production thereof | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6636398B2 | Magnetoresistive effect sensor, thin-film magnetic head with the sensor, manufacturing method of magnetoresistive sensor and manufacturing method of thin-film magnetic head | Physics | 9 | Expired |
| US6414825B1 | Thin film device, thin film magnetic head and magnetoresistive element | Physics | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.