Average Co-Inventor Count = 1.29
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. Lernout & Hauspie Speech Products N.v. (1 from 24 patents)
2. Kurzweil Educational Systems, Inc. (1 from 9 patents)
3. L&h Applications Usa, Inc. (1 from 5 patents)
3 patents:
1. 6256610 - Header/footer avoidance for reading system
2. 6188779 - Dual page mode detection
3. 6033224 - Reading machine system for the blind having a dictionary