David Leason
38Patents
13h-index
17Co-inventors
78Inventor score
Filing activity: Jun 24, 1996 → Sep 23, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6251017A | Game or lottery with a reward validated and/or redeemed online | Physics | 609 | Expired |
| US6663105B1 | Game or lottery with a reward validated and/or redeemed online | Physics | 331 | Expired |
| US5898594A | Method and apparatus for enabling a selection of catalog items | Physics | 104 | Expired |
| US6575363B1 | Vending machine | Physics | 56 | Expired |
| US6106487A | Exchange accessory for use with a monorail catheter | Human Necessities | 41 | Expired |
| US8706530B2 | Automated health data acquisition, processing and communication system | Physics | 31 | Active |
| US7865393B2 | Promotional campaign award validation methods through a distributed computer network | Physics | 30 | Expired |
| US8113438B1 | Governor arrangement for contactless point of sale terminal gateway | Physics | 30 | Active |
| US7832646B1 | Universal contactless gateway for point of sale terminal | Physics | 26 | Active |
| US6866776B2 | Heater for massage nodes and massage therapy device including same | Human Necessities | 25 | Expired |
| US6662808B2 | Hair wrapper | Human Necessities | 22 | Expired |
| US8639571B1 | Rebate transaction system | Physics | 21 | Active |
| US7011013B2 | Electric wok having food processor with automatic feed | Human Necessities | 16 | Expired |
| US6044797A | Drinking bowl with agitator for household pets | Human Necessities | 13 | Expired |
| US7131743B2 | Customizable, illuminated hair beads | Emerging Cross-Sectional Technologies | 12 | Expired |
| US8391835B1 | System and method for automated construction of time records based on telephone calls | Electricity | 11 | Active |
| US7397378B1 | Selectively responsive tag suitable for RFID systems and the like | Physics | 10 | Active |
| US6615846B1 | Hair wrapper with stackable cartridges and cartridges for the same | Human Necessities | 10 | Expired |
| US10424404B2 | Automated health data acquisition, processing and communication system and method | Physics | 6 | Active |
| US8156859B2 | Machine and method for making smores | Human Necessities | 4 | Active |
| US7043286B1 | Extrinsic signal to shunt an acoustic driver in a cellular telephone, pager or the like | Electricity | 4 | Expired |
| US7878488B1 | Method and device for volatizing aromatic oils in response to wireless signals | Emerging Cross-Sectional Technologies | 3 | Active |
| US8145523B2 | Promotional campaign award validation methods through a distributed computer network | Physics | 3 | Active |
| US10886016B2 | Automated health data acquisition, processing and communication system | Physics | 2 | Active |
| US7426055B2 | Optical disc supply and interface for digital copier machine | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.