Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10323858 | Liquid heater with temperature control | Gregory S. Lyon | 2019-06-18 |
| 9587853 | Liquid heater with temperature control | Gregory S. Lyon | 2017-03-07 |
| 8861943 | Liquid heater with temperature control | Gregory S. Lyon | 2014-10-14 |
| 7817906 | Direct electric resistance liquid heater | Jeremiah M. Callahan, James E. Barzyk | 2010-10-19 |
| 6693539 | Inventory system using articles with RFID tags | Thomas J. Clare | 2004-02-17 |
| 6195006 | Inventory system using articles with RFID tags | Thomas J. Clare | 2001-02-27 |
| 6025780 | RFID tags which are virtually activated and/or deactivated and apparatus and methods of using same in an electronic security system | Thomas J. Clare | 2000-02-15 |
| 5963134 | Inventory system using articles with RFID tags | Thomas J. Clare | 1999-10-05 |
| 5926093 | Drive circuit for reactive loads | Alan P. Dutcher | 1999-07-20 |
| 5914692 | Multiple loop antenna with crossover element having a pair of spaced, parallel conductors for electrically connecting the multiple loops | Wen-Liang Wu | 1999-06-22 |
| 5883582 | Anticollision protocol for reading multiple RFID tags | John Daigle, Rade Petrovic | 1999-03-16 |
| 5841350 | Electronic security tag useful in electronic article indentification and surveillance system | Lawrence Appalucci, Gary Mazoki, Thomas J. McKeown, Anthony F. Piccoli, Mark J. Rankin +1 more | 1998-11-24 |
| 5602556 | Transmit and receive loop antenna | — | 1997-02-11 |
| 5546110 | Electrographic printing | Walter J. Lewicki, Jr. | 1996-08-13 |
| 5510769 | Multiple frequency tag | Darko Kajfez, Guangun Zhou | 1996-04-23 |
| 5373301 | Transmit and receive antenna having angled crossover elements | Philip J. Lizzi | 1994-12-13 |
| 5347296 | Electrographic process for producing an image with depth perception and resulting structure | Walter J. Lewicki, Jr. | 1994-09-13 |
| 5187501 | Printing system | Walter J. Lewicki, Jr. | 1993-02-16 |
| 5170188 | Control system for ion projection printing and the like | Robert H. Dunphy | 1992-12-08 |
| 5162179 | Electrographic structure and process | Walter J. Lewicki, Jr. | 1992-11-10 |
| 5126769 | Non-electrographic printer with lamination means | Walter J. Lewicki, Jr. | 1992-06-30 |
| 5124730 | Printing system | Walter J. Lewicki, Jr. | 1992-06-23 |
| 5077736 | Disk drive memory | Robert H. Dunphy, Robert Walsh, George A. Rudeseal | 1991-12-31 |
| 5025273 | RF drive circuit for an ion projection printing head | — | 1991-06-18 |
| 4989206 | Disk drive memory | Robert H. Dunphy, Robert Walsh | 1991-01-29 |