Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7822198 | Parallel encryptor and decryptor | — | 2010-10-26 |
| 7269222 | Miniaturized pulse code modulation encoder | David Escobar Marron, Christian L. Houlberg | 2007-09-11 |
| 7088826 | Method for providing a crypto key and checkword to an encryption device | Christian L. Houlberg | 2006-08-08 |
| 6968061 | Method which uses a non-volatile memory to store a crypto key and a check word for an encryption device | Christian L. Houlberg | 2005-11-22 |
| 6859537 | Non-volatile memory for use with an encryption device | Christian L. Houlberg | 2005-02-22 |
| 6608576 | Pulse code modulation encoder for data acquisition | — | 2003-08-19 |
| 6349652 | Aeroballistic diagnostic system | David J. Hepner, Michael S. Hollis, Peter C. Muller, Thomas E. Harkins, William P. D'Amico +2 more | 2002-02-26 |
| 6078275 | Three phase one kilo-hertz power supply | — | 2000-06-20 |
| 5887198 | Programmable stand-alone drive apparatus for interfacing a host computer with PCMCIA memory cards having multiple formats | Christian L. Houlberg, Richard James Busse | 1999-03-23 |
| 5574451 | Digital circuit for the introduction of dither into an analog signal | James L. Sullivan | 1996-11-12 |
| 5530443 | Digital circuit for the introduction of dither into an analog signal | Christian L. Houlberg | 1996-06-25 |
| 5510790 | Digital circuit for the introduction of dither into an analog signal | Christian L. Houlberg | 1996-04-23 |
| 5448237 | Digital circuit for the introduction of dither into an analog signal | Jeffrey J. Pacl | 1995-09-05 |
| 5436943 | Digital audio signal processing circuit | — | 1995-07-25 |
| H1414 | Nonvolatile memory system for storing a key word and sensing the | — | 1995-02-07 |
| 5349986 | Valve mechanism for an acoustic modulator | James L. Sullivan | 1994-09-27 |
| 5311180 | Digital circuit for the introduction and later removal of dither from an analog signal | — | 1994-05-10 |