Hajime Takahashi
32Patents
11h-index
49Co-inventors
75Inventor score
Filing activity: Feb 13, 1986 → Nov 17, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5270631A | Linear DC motor driving device | Physics | 30 | Expired |
| US5521495A | Sensor for contactless determination of an angle of rotation of a rotatable structural element | Physics | 23 | Expired |
| US5982535A | Centrifuge microscope capable of realizing polarized light observation | Physics | 20 | Expired |
| US5634037A | Multiprocessor system having a shared memory with exclusive access for a requesting processor which is maintained until normal completion of a process and for retrying the process when not normally completed | Physics | 20 | Expired |
| US5410650A | Message control system for data communication system | Physics | 20 | Expired |
| US6709176B2 | Printer controlling device, printer controlling method, and computer product | Physics | 15 | Expired |
| US4820232A | Voice making device for moving animal toy and moving animal toy using the voice making device | Human Necessities | 14 | Expired |
| US5905875A | Multiprocessor system connected by a duplicated system bus having a bus status notification line | Physics | 14 | Expired |
| US5517625A | System bus control system for multiprocessor system | Physics | 14 | Expired |
| US5727151A | Message control system specifying message storage buffer for data communication system with general purpose and arbitrary form buffers | Physics | 12 | Expired |
| US4810226A | Calling device of motion toy and motion toy using said calling device | Human Necessities | 11 | Expired |
| US4962107A | Agent for cerebral protection | Chemistry; Metallurgy | 10 | Expired |
| US5761728A | Asynchronous access system controlling processing modules making requests to a shared system memory | Physics | 9 | Expired |
| US5455508A | Rotational angle sensor having a magnetic member mounted on a rotatable shaft | Physics | 6 | Expired |
| US8189356B2 | PWM inverter | Electricity | 4 | Active |
| US5903763A | Method of recovering exclusive control instruction and multi-processor system using the same | Physics | 4 | Expired |
| US5592624A | Data communication for controlling message transmission and reception among processing modules using information stored in descriptor to form a loosely coupled multiprocessing system | Physics | 4 | Expired |
| US7000679B2 | Casting, vertical casting method and vertical casting apparatus | Performing Operations; Transporting | 1 | Expired |
| US7368891B2 | Charge control method of capacitor in thyristor converter | Electricity | 1 | Expired |
| US11264889B2 | Electric-power conversion apparatus | Electricity | 1 | Active |
| US7711911B2 | Semiconductor storage device detecting change of memory content and information processing device including semiconductor storage device detecting change of memory content | Electricity | 1 | Active |
| US9099931B2 | Power supply device | Human Necessities | 1 | Active |
| US4824842A | Cinnamoyl piperidines and thiomorpholine and cerebral protection compositions | Chemistry; Metallurgy | 1 | Expired |
| US12301235B2 | Semiconductor device | Electricity | 0 | Active |
| US10975827B2 | Ignition control system with circulating-current control | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.