Michael L. Leonhardt
57Patents
22h-index
57Co-inventors
91Inventor score
Filing activity: Nov 21, 1990 → Mar 28, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6658526B2 | Network attached virtual data storage subsystem | Physics | 958 | Expired |
| US7304855B1 | Canister-based storage system | Physics | 120 | Expired |
| US5485321A | Format and method for recording optimization | Physics | 94 | Expired |
| US5416914A | Management of removable media for multiple device types | Physics | 74 | Expired |
| US5164909A | Virtual robot for a multimedia automated cartridge library system | Physics | 69 | Expired |
| US6529996B1 | Network attached virtual tape data storage subsystem | Physics | 63 | Expired |
| US7350101B1 | Simultaneous writing and reconstruction of a redundant array of independent limited performance storage devices | Physics | 62 | Expired |
| US7659820B2 | Removable data storage media tracking system | Physics | 59 | Active |
| US6084740A | Optical servo system for a tape drive | Physics | 48 | Expired |
| US5971281A | Method for storing multiple logical data volumes on a single physical volume utilizing writable labels and physical volume produced thereby | Physics | 42 | Expired |
| US7130152B1 | High track density magnetic recording head | Physics | 42 | Expired |
| US6708272B1 | Information encryption system and method | Electricity | 42 | Expired |
| US7024395B1 | Method and system for secure credit card transactions | Physics | 36 | Expired |
| US6236529A | Optical servo system for a tape drive | Physics | 34 | Expired |
| US5274584A | Solid state memory device having optical data connections | Physics | 33 | Expired |
| US5293285A | Apparatus and media for recording data on two sides of a magnetic tape | Physics | 31 | Expired |
| US5253246A | Universal data storage element for providing various data storage media in a standard exterior housing | Physics | 28 | Expired |
| US5774287A | System and method employing buffering mechanism with interface for providing compatibility between recording formats | Physics | 28 | Expired |
| US6587307B1 | Method of controlling the internal environment of a data storage cartridge | Physics | 24 | Expired |
| US7400510B1 | Canister-based storage system | Physics | 24 | Expired |
| US6162271A | Filter with housing | Performing Operations; Transporting | 24 | Expired |
| US6515827B1 | Dual chambered environmentally controlled cartridge and method for protecting data storage media | Physics | 22 | Expired |
| US5424526A | High data density label and system using same | Physics | 21 | Expired |
| US5547142A | Tape cassette with internal tape cleaning and locking | Physics | 20 | Expired |
| US6442296B1 | Archival information storage on optical medium in human and machine readable format | Electricity | 20 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.