Growing community of inventors

Friendswood, TX, United States of America

Michael David Johnson

Average Co-Inventor Count = 2.15

ph-index = 6

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 = 107

Michael David JohnsonRobert Louis Clark, Jr (4 patents)Michael David JohnsonFrank T Eichstadt (1 patent)Michael David JohnsonDwight E Andrews (1 patent)Michael David JohnsonJames D Baker (1 patent)Michael David JohnsonBaron Hall (1 patent)Michael David JohnsonMichael E Bain (1 patent)Michael David JohnsonMichael David Johnson (7 patents)Robert Louis Clark, JrRobert Louis Clark, Jr (7 patents)Frank T EichstadtFrank T Eichstadt (3 patents)Dwight E AndrewsDwight E Andrews (1 patent)James D BakerJames D Baker (1 patent)Baron HallBaron Hall (1 patent)Michael E BainMichael E Bain (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (3 from 832,912 patents)

2. Spacehab, Inc. (1 from 11 patents)

3. Odyssey Space Research, L.l.c. (1 from 2 patents)

4. Egression, LLC (1 from 1 patent)

5. Egresson, LLC (1 from 1 patent)


7 patents:

1. 8519852 - Two-axis inclinometer head of bed elevation alarm and method of operation

2. 8397393 - Device to reduce the incidence of aspiration

3. 8368876 - Calibration system and method for imaging flash LIDAR systems

4. 7934321 - Tilt switch employing graphite

5. 7780119 - Modular spacecraft

6. 7562458 - Device to reduce the incidence of aspiration

7. 7219859 - Multipurpose modular spacecraft

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as of
1/12/2026
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