Growing community of inventors

Moreland Hills, OH, United States of America

David J Birnkrant

Average Co-Inventor Count = 1.67

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 = 47

David J BirnkrantChad M Boerst (3 patents)David J BirnkrantMike Yang ChangGuo (2 patents)David J BirnkrantMichael Yang ChangGuo (1 patent)David J BirnkrantDavid J Birnkrant (5 patents)Chad M BoerstChad M Boerst (3 patents)Mike Yang ChangGuoMike Yang ChangGuo (2 patents)Michael Yang ChangGuoMichael Yang ChangGuo (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Mhs Care-innovation LLC (2 from 7 patents)

2. Hill-rom Services, Inc. (1 from 1,381 patents)

3. The Metrohealth System (1 from 9 patents)

4. Metrohealth Ventures LLC (1 from 1 patent)


5 patents:

1. 12080401 - Combination respiratory therapy device, system and method

2. 10814082 - Combination respiratory therapy device, system and method

3. 9795752 - Combination respiratory therapy device, system, and method

4. 8844530 - Combination lung ventilation and mucus clearance apparatus and method

5. 8651107 - Manual lung ventilation device

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as of
12/9/2025
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