Growing community of inventors

West Lebanon, NH, United States of America

Leif Johnson

Average Co-Inventor Count = 3.23

ph-index = 2

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 = 9

Leif JohnsonTroy O McBride (6 patents)Leif JohnsonJoel Stettenheim (6 patents)Leif JohnsonJonathan A Lynch (5 patents)Leif JohnsonOliver James Brambles (5 patents)Leif JohnsonPer Erik Kristoffer Edstrom (5 patents)Leif JohnsonLeif Johnson (7 patents)Troy O McBrideTroy O McBride (50 patents)Joel StettenheimJoel Stettenheim (10 patents)Jonathan A LynchJonathan A Lynch (15 patents)Oliver James BramblesOliver James Brambles (6 patents)Per Erik Kristoffer EdstromPer Erik Kristoffer Edstrom (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Norwich Technologies, Inc. (6 from 8 patents)

2. Other (1 from 832,680 patents)


7 patents:

1. 12000369 - Thermal energy storage system including a plurality of vessels each having hot and cold liquid portions separated by a floating piston

2. 11578693 - Thermal energy storage system including a vessel having hot and cold liquid portions separated by floating piston

3. 11543191 - Thermal energy storage system with parallel connected vessels

4. 11519504 - Piston ring for floating piston in a thermal energy storage system

5. 11493281 - Floating separator piston for a thermal energy storage system

6. 11272692 - Poultry feed device

7. 10924057 - Snow shedding apparatus and method of using same

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as of
12/5/2025
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