Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12424062 | Method and system for providing a double chance lottery game with a trifecta option | Robert D. Hamman | 2025-09-23 |
| 12315347 | Method and system for producing N-tuple number sets for lottery submissions | Robert D. Hamman | 2025-05-27 |
| 12039834 | System and method for generation and validation of multigame printed tickets using multidimensional barcodes | Robert D. Hamman | 2024-07-16 |
| 11961372 | System and method for producing non-redundant quick pick number groups for automated lottery ticket selection | Robert D. Hamman | 2024-04-16 |
| 11846230 | Adaptive linear linked piston electric power generator | — | 2023-12-19 |
| 11840957 | Adaptive linear linked piston electric power generator | — | 2023-12-12 |
| 11815004 | Adaptive linear linked piston electric power generator | — | 2023-11-14 |
| 11168609 | Adaptive linear linked piston electric power generator | — | 2021-11-09 |
| 11100760 | System and method for generation and validation of multigame with bonus game using an electronic card | Robert D. Hamman | 2021-08-24 |
| 11049367 | System and method for instant win scratch off ticket game with ticket sales maximization using secondary game | Robert D. Hamman, Kenneth E. Irwin, Jr. | 2021-06-29 |
| 10636254 | System and method for instant win scratch off ticket game with ticket sales maximization using secondary game | Robert D. Hamman, Kenneth E. Irwin, Jr. | 2020-04-28 |
| 10191993 | Network based sweepstakes gaming system incorporating an alternative method of contestant entry | Anthony James Ebert, Robert D. Hamman, William C. Kennedy, III, Robert McKee | 2019-01-29 |
| 8870084 | Method and system for the generation and validation of personal identification numbers | Robert D. Hamman, William C. Kennedy, III | 2014-10-28 |
| 7327271 | Portable weather detector and alert system | Lawrence Tibor Greenstein | 2008-02-05 |
| 6923133 | Boatlift buoyancy system | Lance Hendrickson | 2005-08-02 |
| 6829695 | Enhanced boolean processor with parallel input | — | 2004-12-07 |
| 6535150 | Method and apparatus for implementing run-length compression | — | 2003-03-18 |
| 6507877 | Asynchronous concurrent dual-stream FIFO | — | 2003-01-14 |
| 6334123 | Index relational processor | Merle Thomas Proulx | 2001-12-25 |
| 5903653 | Vehicle security system | Duane Sayers | 1999-05-11 |
| 5880775 | Method and apparatus for detecting changes in a video display | — | 1999-03-09 |
| 5546194 | Method and apparatus for converting a video image format to a group III fax format | — | 1996-08-13 |
| 5501255 | Fuel recovery system | Matthew P. Tortu | 1996-03-26 |
| 5166977 | Protocol converter for a secure FAX transmission system | — | 1992-11-24 |
| 4659313 | Control yoke apparatus for computerized aircraft simulation | Robert J. Kuster | 1987-04-21 |