Nathan Altman
45Patents
13h-index
63Co-inventors
84Inventor score
Filing activity: Oct 1, 1999 → Mar 20, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6607136B1 | Physical presence digital authentication system | Physics | 577 | Expired |
| US7383297B1 | Method to use acoustic signals for computer communications | Physics | 153 | Expired |
| US7706838B2 | Physical presence digital authentication system | Physics | 94 | Expired |
| US7280970B2 | Sonic/ultrasonic authentication device | Electricity | 54 | Expired |
| US8019609B2 | Sonic/ultrasonic authentication method | Physics | 52 | Active |
| US9810784B2 | System and method for object position estimation based on ultrasonic reflected signals | Physics | 44 | Active |
| US8078136B2 | Physical presence digital authentication system | Physics | 31 | Active |
| US7852318B2 | Acoustic robust synchronization signaling for acoustic positioning system | Physics | 25 | Active |
| US8546706B2 | Method and system for obtaining positioning data | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7941480B2 | Computer communications using acoustic signals | Physics | 23 | Active |
| US8509680B2 | Physical presence digital authentication system | Physics | 17 | Active |
| US8604365B2 | Ultrasonic digitizer and host | Physics | 15 | Active |
| US10262188B2 | Liveness and spoof detection for ultrasonic fingerprint sensors | Physics | 13 | Active |
| US9912415B2 | Fast service discovery and pairing using ultrasonic communication | Electricity | 10 | Active |
| US8184504B2 | System and method for positioning | Physics | 10 | Active |
| US8248389B2 | Method and system for digital pen assembly | Emerging Cross-Sectional Technologies | 8 | Active |
| US7480692B2 | Computer communications using acoustic signals | Physics | 6 | Expired |
| US8963890B2 | Method and system for digital pen assembly | Emerging Cross-Sectional Technologies | 6 | Active |
| US8787113B2 | Voice and position localization | Physics | 6 | Active |
| US9195325B2 | Method and system for obtaining positioning data | Emerging Cross-Sectional Technologies | 4 | Active |
| US8861312B2 | MEMS microphone | Electricity | 4 | Active |
| US9741244B2 | Methods, smart objects, and systems for naming and interacting with smart objects | Electricity | 4 | Active |
| US10235552B2 | Hybrid capacitive and ultrasonic sensing | Physics | 4 | Active |
| US8985440B2 | System and method for control of bailment inventory | Physics | 4 | Active |
| US10126406B2 | Method and apparatus for performing ultrasonic presence detection | Physics | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.