Ken Umeno
27Patents
4h-index
16Co-inventors
60Inventor score
Filing activity: Mar 31, 1998 → Mar 13, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6289296A | Statistical simulation method and corresponding simulation system responsive to a storing medium in which statistical simulation program is recorded | Physics | 19 | Expired |
| US6263146A | Apparatus for optically generating chaotic random numbers | Physics | 14 | Expired |
| US6661831B1 | OUTPUT APPARATUS, TRANSMITTER, RECEIVER, COMMUNICATIONS SYSTEM FOR OUTPUTTING, TRANSMITTING AND RECEIVING A PSEUDORANDOM NOISE SEQUENCE, AND METHODS FOR OUTPUTTING, TRANSMITTING RECEIVING PSEUDORANDOM NOISE SEQUENCES AND DATA RECORDING MEDIUM | Electricity | 7 | Expired |
| US7099366B2 | Pseudo-random number sequence output unit, transmitter, receiver, communication system and filter unit | Electricity | 6 | Expired |
| US6832233B2 | Apparatus and method for computing multiple integral, and recording medium | Physics | 4 | Expired |
| US6477481B1 | Device and method for outputting stochastic processes, and data recording medium | Physics | 3 | Expired |
| US7257608B2 | Apparatus and method for outputting sequence of vectors, data recording medium, and carrier wave signal | Physics | 2 | Expired |
| US7697590B2 | Communicating apparatus and communicating method | Electricity | 2 | Active |
| US7421463B2 | Random sequence generating apparatus, encryption/decryption apparatus, random sequence generating method, encryption/decryption method and program | Electricity | 2 | Expired |
| US7925014B2 | Random number generating, encrypting, and decrypting apparatus, method thereof, program thereof, and recording medium thereof | Electricity | 2 | Expired |
| US7411997B2 | Apparatus and method for filtering a spectrum spread communication | Electricity | 2 | Expired |
| US7577182B2 | Transmitter apparatus, receiver apparatus, transmission method, reception method and program | Electricity | 1 | Expired |
| US7231048B2 | Key sharing system, public key cryptosystem, signature system, key sharing apparatus, encryption apparatus, decryption apparatus, signature apparatus, authentication apparatus, key sharing method, encryption method, decryption method, signature method, authentication method, and programs | Electricity | 1 | Expired |
| US7471714B2 | Random number sequence sharing system, random number sequence sharing apparatus, codec system, coding apparatus, decoding apparatus, random number sequence sharing method, coding method, decoding method, and program product | Electricity | 1 | Active |
| US6668265B1 | Apparatus and method for outputting sequence of vectors, data recording medium, and carrier wave signal | Physics | 1 | Expired |
| US7237110B2 | Authentication system, authentication apparatus, authentication target apparatus, authentication method, method of being authenticated, program and information recording medium | Electricity | 1 | Expired |
| US7466780B2 | Pseudo-random number sequence filter, filtering method and data recording medium | Electricity | 1 | Active |
| US8285773B2 | Signal separating device, signal separating method, information recording medium, and program | Physics | 1 | Active |
| US7472147B2 | Random number string output apparatus, random number string output method, program, and information recording medium | Physics | 0 | Expired |
| US10983231B2 | Abnormality detection apparatus, communication apparatus, abnormality detection method, and recording medium | General | 0 | Revoked |
| US6654404B1 | System, apparatus, and method for outputting pseudorandom noise sequences, and data recording medium | Electricity | 0 | Expired |
| US11791668B2 | Power supply device and power supply system | Emerging Cross-Sectional Technologies | 0 | Active |
| US11016206B2 | Abnormality detection apparatus, communication apparatus, abnormality detection method, and recording medium | Physics | 0 | Active |
| US8265268B2 | Converter, encryption/decryption system, multi-stage converter, converting method, multi-stage converting method, program, and information recording medium | Electricity | 0 | Active |
| US7317763B2 | Pulse generator, pulse generating method, communicating apparatus, and communicating method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.