Average Co-Inventor Count = 2.73
ph-index = 4
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Xm Satellite Radio Inc. (4 from 63 patents)
2. Sirius Xm Radio Inc. (1 from 133 patents)
5 patents:
1. 8498568 - System and method for providing recording and playback of digital media content
2. 7809326 - System and method for providing recording and playback of digital media content
3. 7454166 - System and method for providing recording and playback of digital media content
4. 7263329 - Method and apparatus for navigating, previewing and selecting broadband channels via a receiving user interface
5. 6549774 - Digital audio service satellite receiver having switchable operating modes for stationary or mobile use