Growing community of inventors

Ambler, PA, United States of America

David C Johnson

Average Co-Inventor Count = 2.00

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 = 28

David C Johnson ↔ Thomas E Meacham, Jr (2 patents)David C Johnson ↔ Henry C Bischoff (1 patent)David C JohnsonDavid C Johnson (3 patents)Thomas E Meacham, JrThomas E Meacham, Jr (3 patents)Henry C BischoffHenry C Bischoff (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Refreshment Machinery Incorporated (3 from 14 patents)


3 patents:

1. D260095 - Slush dispenser

2. 4116630 - Sterilization method

3. 4102645 - Sterilization apparatus

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as of
12/21/2025
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