Hiroshi Maruyama
111Patents
21h-index
155Co-inventors
93Inventor score
Filing activity: Nov 17, 1970 → May 23, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6457030B1 | Systems, methods and computer program products for modifying web content for display via pervasive computing devices | Physics | 192 | Expired |
| US5325664A | System for determining deterioration of catalysts of internal combustion engines | Emerging Cross-Sectional Technologies | 105 | Expired |
| US5088297A | Air conditioning apparatus | Emerging Cross-Sectional Technologies | 92 | Expired |
| US5477450A | Machine translation method and apparatus | Physics | 68 | Expired |
| US5640575A | Method and apparatus of translation based on patterns | Physics | 68 | Expired |
| US6715073B1 | Secure server using public key registration and methods of operation | Electricity | 53 | Expired |
| US6393563B1 | Temporary digital signature method and system | Physics | 38 | Expired |
| USD298251S | Disk cartridge | General | 34 | Expired |
| US5396873A | Evaporative fuel-processing system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US7165179B2 | Digital signature verification and program transmission | Electricity | 30 | Expired |
| US6175800A | Route searching device | Physics | 30 | Expired |
| US4595665A | High alumina sintered body | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6990585B2 | Digital signature system, digital signature method, digital signature mediation method, digital signature mediation system, information terminal and storage medium | Electricity | 28 | Expired |
| US5299545A | Evaporative fuel-processing system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US5450834A | Evaporative fuel-processing system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US5912092A | Battery package | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5290695A | Heparitinase, process for producing the same and bacteria producing the same | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7953977B2 | Security and ticketing system control and management | Electricity | 24 | Active |
| US5398662A | Evaporative fuel-processing system for internal combustion engines for vehicles | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US7043686B1 | Data compression apparatus, database system, data communication system, data compression method, storage medium and program transmission apparatus | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5269277A | Failure-detecting device and fail-safe device for tank internal pressure sensor of internal combustion engines | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4695910A | Recording disc cartridge having an improved hub assembly | Physics | 21 | Expired |
| US4714973A | Shutter assembly for use in a disc cartridge | Physics | 21 | Expired |
| US5477842A | Evaporative fuel-processing system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5345917A | Evaporative fuel-processing system for internal combustion engines for vehicles | Mechanical Engineering; Lighting; Heating | 20 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.