Growing community of inventors

San Francisco, CA, United States of America

David Jeffrey Merrill

Average Co-Inventor Count = 3.00

ph-index = 2

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 = 51

David Jeffrey Merrill ↔ Jeevan James Kalanithi (2 patents)David Jeffrey Merrill ↔ Robert K Lang (1 patent)David Jeffrey Merrill ↔ Brent Paul Fitzgerald (1 patent)David Jeffrey MerrillDavid Jeffrey Merrill (2 patents)Jeevan James KalanithiJeevan James Kalanithi (20 patents)Robert K LangRobert K Lang (1 patent)Brent Paul FitzgeraldBrent Paul Fitzgerald (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sifteo, Inc. (2 from 4 patents)


2 patents:

1. D691656 - Manipulable cubes base station

2. D635190 - Interactive play and learning system

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as of
1/22/2026
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