Growing community of inventors

Concord, CA, United States of America

David T Ryan

Average Co-Inventor Count = 4.07

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 = 55

David T RyanChung J Lee (2 patents)David T RyanJoseph P Ellul (2 patents)David T RyanGiovanni Antonio Foggiato (2 patents)David T RyanIqbal A Shareef (2 patents)David T RyanDavid Leksell (2 patents)David T RyanMing Xi Chan (2 patents)David T RyanJeanne L Luce (2 patents)David T RyanPeter Tormey (1 patent)David T RyanStephen M Campbell (1 patent)David T RyanDavid T Ryan (3 patents)Chung J LeeChung J Lee (25 patents)Joseph P EllulJoseph P Ellul (13 patents)Giovanni Antonio FoggiatoGiovanni Antonio Foggiato (12 patents)Iqbal A ShareefIqbal A Shareef (2 patents)David LeksellDavid Leksell (2 patents)Ming Xi ChanMing Xi Chan (2 patents)Jeanne L LuceJeanne L Luce (2 patents)Peter TormeyPeter Tormey (4 patents)Stephen M CampbellStephen M Campbell (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Quester Technology, Inc. (2 from 12 patents)

2. Other (1 from 832,912 patents)


3 patents:

1. 6871611 - Kayak with adjustable cockpit walls

2. 6114227 - Chamber for reducing contamination during chemical vapor deposition

3. 6079353 - Chamber for reducing contamination during chemical vapor deposition

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as of
1/11/2026
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