Growing community of inventors

Highland Village, TX, United States of America

Karl Henderson

Average Co-Inventor Count = 4.17

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.

Forward Citations = 156

Karl HendersonJames Duke Bond (5 patents)Karl HendersonKamran W Mir (3 patents)Karl HendersonStacy Borocz (3 patents)Karl HendersonAnne Gillman (3 patents)Karl HendersonDavid Ford (1 patent)Karl HendersonCharles David Ford (1 patent)Karl HendersonKarl Henderson (5 patents)James Duke BondJames Duke Bond (5 patents)Kamran W MirKamran W Mir (5 patents)Stacy BoroczStacy Borocz (4 patents)Anne GillmanAnne Gillman (3 patents)David FordDavid Ford (1 patent)Charles David FordCharles David Ford (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Mci, Inc. (2 from 161 patents)

2. Worldcom, Inc. (2 from 132 patents)

3. Verizon Patent and Licensing Inc. (1 from 6,565 patents)


5 patents:

1. 8130914 - Calling card having an associated pre-recorded personal greeting

2. 7180990 - Prepaid telephone calling card with message recording capability

3. 7145989 - Pre-paid telephone calling card having an associated pre-recorded personal greeting

4. 6507644 - Pre-paid telephone calling card linked to a stored value account

5. 6404869 - Preferred billing rate pre-paid telephone calling card

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idiyas.com
as of
12/31/2025
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