Average Co-Inventor Count = 2.31
ph-index = 5
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. Seiko Communications Holding N.v. (4 from 17 patents)
2. Seiko Communications Systems Inc. (1 from 11 patents)
5 patents:
1. 5729590 - Acknowledge back pager using secondary transmission source
2. 5664948 - Delivery of data including preloaded advertising data
3. 5572488 - Wristwatch paging receiver having analog message display
4. 5513241 - Low cost acknowledge-back system for a pager using existing
5. 5475653 - Analog wristwatch paging receiver