Average Co-Inventor Count = 3.83
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. (10 from 233 patents)
10 patents:
1. 11499706 - Apparatus for producing light and sound
2. 11250630 - Immersive story creation
3. 10643482 - Fill-in-the-blank audio-story engine
4. 10352553 - Apparatus for producing light and sound
5. 9759413 - Translucent object having housing, cavities and controller forming facial expressions
6. 9449350 - Prompting service
7. 9200790 - Decorative object that produces a complimentary shadow design
8. D739293 - Wire decorative holder
9. 8961183 - Fill-in-the-blank audio-story engine
10. 8819169 - Prompting service