PPM, Inc.
Records under this name other than patents PPM, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,449,486 | Multiple location estimates in a cellular communication system Formerly held Term ended Term ended May 25, 2019 · From the USPTO record | Term ended | Term ended May 25, 2019 | From the USPTO record |
| US 6,269,246 | Location determination using RF fingerprinting Formerly held Term ended Term ended Sep 22, 2018 · From the USPTO record | Term ended | Term ended Sep 22, 2018 | From the USPTO record |
| US 6,393,294 | Location determination using RF fingerprinting Formerly held Term ended Ended no later than Sep 22, 2018 · From the USPTO record | Term ended | Ended no later than Sep 22, 2018 | From the USPTO record |
| US 6,591,112 | Communication system and device using dynamic receiver addressing Formerly held Term ended Term ended Nov 16, 2017 · From the USPTO record | Term ended | Term ended Nov 16, 2017 | From the USPTO record |
| US 6,115,605 | Communication system and device using dynamic receiver addressing Formerly held Term ended Term ended Aug 29, 2017 · From the USPTO record | Term ended | Term ended Aug 29, 2017 | From the USPTO record |
| US 6,474,486 | Method of telescoping a crane jib, apparatus for implementing the method, and a crane jib constituting an application thereof Lapsed on the fee record Ended Nov 5, 2006 · From the USPTO record | Lapsed on the fee record | Ended Nov 5, 2006 | From the USPTO record |
| US 4,249,244 | Electro-optical system and method and apparatus for providing automatically-compensating, traceable calibration and zeroing for light scattering devices Term ended Term ended no later than Feb 3, 2001 · Low confidence | Term ended | Term ended no later than Feb 3, 2001 | Low confidence |
| US 4,396,286 | Electro-optical system and method and apparatus for providing automatically-compensating, traceable calibration and zeroing for light scattering devices Term ended Term ended no later than Aug 2, 2003 · Low confidence | Term ended | Term ended no later than Aug 2, 2003 | Low confidence |
| US 4,473,296 | System and method and apparatus for a continuous aerosol monitor (CAM) using electro-optical weighing for general aerosols Term ended Term ended no later than Sep 25, 2004 · Low confidence | Term ended | Term ended no later than Sep 25, 2004 | Low confidence |
| US 4,512,060 | Apparatus and methods for aeromechanical and electrodynamic release and separation of foreign matter from fiber Term ended Term ended no later than Apr 23, 2005 · Low confidence | Term ended | Term ended no later than Apr 23, 2005 | Low confidence |