Average Co-Inventor Count = 1.43
ph-index = 13
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. Other (14 from 832,966 patents)
2. Qs Industries, Inc. (10 from 10 patents)
25 patents:
1. 9511303 - Signaling and remote control train operation
2. 9449590 - Low frequency audio sound effects in model railroading
3. 8701562 - Signaling and remote control train operation
4. 8408143 - Sound systems for model railroad locomotives
5. 8166887 - Sound systems for model railroad locomotives
6. 8070108 - Signaling and remote control train operation
7. 7954435 - Sound systems for model railroad locomotives
8. RE42284 - Signaling techniques for DC track powered model railroads
9. 7859424 - Proximity control of on-board processor-based model train sound and control system
10. 7770847 - Signaling and remote control train operation
11. 7451708 - Sound systems for model railroad locomotives
12. 7429931 - Proximity control of on-board processor-based model train sound and control system
13. 6230140 - Continuous sound by concatenating selected digital sound segments
14. 5940005 - Method and apparatus for storing and utilizing a unique power down state
15. 5896017 - Model train locomotive with doppler shifting of sound effects