Growing community of inventors

Somserset, NJ, United States of America

Charles J Trojahn

Average Co-Inventor Count = 1.11

ph-index = 4

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 = 54

Charles J TrojahnNikolaus Friedrich (1 patent)Charles J TrojahnCharles J Trojahn (5 patents)Nikolaus FriedrichNikolaus Friedrich (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (4 from 832,912 patents)

2. Frank Brunckhorst Co. (1 from 6 patents)

3. Friedrich Metal Products Co., Inc. (1 from 4 patents)


5 patents:

1. 8925665 - Propulsion and directional control apparatus for an air cushion vehicle

2. 7306066 - Air cushion vehicle and game

3. 4910030 - Frozen confectionary product and method of making the same

4. D297680 - Filled frozen confection

5. 3935688 - Impervious wall structure

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