Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11671768 | Hearing aid having two interconnected parts | Elson Lim, Ravikumar Badiger | 2023-06-06 |
| 9608430 | Battery circuit fault protection in uninterruptable power sources | Jiwu Duan, John C. Elliott, Dennis W. Fried, Steven Mark Groff | 2017-03-28 |
| 8338982 | Apparatus to maintain redundancy in four line system | Jiwu Duan, Steven Mark Groff | 2012-12-25 |
| 8138625 | Dual line active automatic transfer switch | Jiwu Duan, Steven Mark Groff, Juan Antonio Yanes | 2012-03-20 |
| 8097978 | Extending backup times of uninterruptible power supplies | Steven Mark Groff | 2012-01-17 |
| 8039990 | DC UPS configured as intrinsic power transfer switch | Steven Mark Groff | 2011-10-18 |
| 8022579 | Brownout solution for electromechanical automatic transfer switch | Steven Mark Groff | 2011-09-20 |
| 7898106 | DC UPS configured as intrinsic power transfer switch | Steven Mark Groff | 2011-03-01 |
| 7868484 | Worldwide adaptive multi-coil automatic transfer switch | Steven Mark Groff | 2011-01-11 |
| 7847435 | Intrinsically balanced direct current uninterruptible power supply | Steven Mark Groff | 2010-12-07 |
| 7763993 | DC UPS with auto-ranging backup voltage capability | Steven Mark Groff | 2010-07-27 |
| 7729111 | External hard drive having integral stand | Peter B. Madson, Lv Wang | 2010-06-01 |
| 7664961 | Wireless handheld device with local biometric authentication | George W. Blattner, Robert C. Martin | 2010-02-16 |
| 7535718 | Memory card compatible with multiple connector standards | — | 2009-05-19 |
| 7383992 | Memory card with host interface and including internal interface for receiving micro-size memory cards | — | 2008-06-10 |
| 7300306 | Data storage device with self-mating host connector that is insertable into a receptacle formed in a housing of the device | Max Burton, Cyan Godfrey, Mark Prommel, Richard Whitehall | 2007-11-27 |
| 7184264 | Connectable memory devices to provide expandable memory | — | 2007-02-27 |
| 7151673 | Memory card host connector with retractable shieldless tab | Steven Lindblom, Robert W. Tapani | 2006-12-19 |
| 7075793 | Device having a slot capable of receiving at least four types of memory cards | Robert W. Tapani | 2006-07-11 |
| 7051223 | System, apparatus, and method for limiting non-volatile memory | Gary W. Batchelor, Michael T. Benhase, Enrique Q. Garcia, Carl E. Jones | 2006-05-23 |
| 6908038 | Multi-connector memory card with retractable sheath to protect the connectors | — | 2005-06-21 |
| 6890188 | Memory card compatible with device connector and host connector standards | — | 2005-05-10 |
| 6883718 | Credit card sized memory card with host connector | Thomas C. Kelly | 2005-04-26 |
| 6738259 | Apparatus supporting multiple memory card formats | Robert W. Tapani | 2004-05-18 |
| 4442408 | Differential amplifier with auto bias adjust | — | 1984-04-10 |