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Downers Grove, IL, United States of America

William F Helwig, Jr

Average Co-Inventor Count = 1.08

ph-index = 5

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 = 51

William F Helwig, JrHenry D Jeffries, Jr (1 patent)William F Helwig, JrWilliam F Helwig, Jr (7 patents)Henry D Jeffries, JrHenry D Jeffries, Jr (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Avtec Industries, Inc. (6 from 14 patents)

2. Other (1 from 832,812 patents)


7 patents:

1. 4331484 - Energy saving dishwashing method with heater control

2. 4316229 - Electric current detector circuit

3. 4315140 - Energy saving dishwasher

4. 4254788 - Energy saving dishwasher

5. 4180744 - Energy management system

6. 4163269 - Ground fault and fire detector system

7. 4156432 - Delay circuit

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as of
12/20/2025
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