Walker Digital, LLC
532Patents
185Active
532Granted
53Portfolio score
Filing activity: Dec 12, 1996 → Sep 23, 2013 · 165 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6110041A | Method and system for adapting gaming devices to playing preferences | Physics | 1,416 | Expired |
| US6068552A | Gaming device and method of operation thereof | Physics | 962 | Expired |
| US6174235A | Method and apparatus for directing a game with user-selected elements | Physics | 897 | Expired |
| US6142872A | Method and apparatus for team play of slot machines | Human Necessities | 781 | Expired |
| US6293866A | System for adapting gaming devices to playing preferences | Physics | 778 | Expired |
| US6077163A | Gaming device for a flat rate play session and a method of operating same | Physics | 729 | Expired |
| US6267292A | Method and apparatus for funds and credit line transfers | Physics | 722 | Expired |
| US6099408A | Method and apparatus for securing electronic games | Human Necessities | 711 | Expired |
| US6163771A | Method and device for generating a single-use financial account number | Physics | 700 | Expired |
| US6302844A | Patient care delivery system | Emerging Cross-Sectional Technologies | 669 | Expired |
| US6113495A | Electronic gaming system offering premium entertainment services for enhanced player retention | Human Necessities | 637 | Expired |
| US6527638B1 | Secure improved remote gaming system | Physics | 527 | Expired |
| US6144948A | Instant credit card marketing system for reservations for future services | Physics | 518 | Expired |
| US6161059A | Vending machine method and apparatus for encouraging participation in a marketing effort | Physics | 515 | Expired |
| US6206782A | System and method for facilitating casino team play | Physics | 504 | Expired |
| US6224486A | Database driven online distributed tournament system | Human Necessities | 494 | Expired |
| US6238288A | Method and apparatus for directing a game in accordance with speed of play | Human Necessities | 494 | Expired |
| US6425828B2 | Database driven online distributed tournament system | Human Necessities | 448 | Expired |
| US6064987A | Method and apparatus for providing and processing installment plans at a terminal | Physics | 441 | Expired |
| US6199014A | System for providing driving directions with visual cues | Physics | 437 | Expired |
| US6244957A | Automated play gaming device | Physics | 414 | Expired |
| US6203430A | Electronic amusement device and method for enhanced slot machine play | Physics | 407 | Expired |
| US6227972A | Method and apparatus for expiration of prepaid slot machine plays | Human Necessities | 397 | Expired |
| US6312332A | Method and apparatus for team play of slot machines | Human Necessities | 396 | Expired |
| US6113492A | Gaming device for operating in a reverse payout mode and a method of operating same | Physics | 386 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.