Average Co-Inventor Count = 4.44
ph-index = 3
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. Hallmark Cards, Inc. (6 from 233 patents)
6 patents:
1. 9759413 - Translucent object having housing, cavities and controller forming facial expressions
2. 9232288 - Article having karaoke record feature and simultaneous playback
3. 9200790 - Decorative object that produces a complimentary shadow design
4. 8937535 - Greeting card with subsequent audio after closing
5. 8736429 - Greeting card with subsequent audio after closing
6. 8719033 - Greeting card having karaoke record feature and simultaneous playback