Growing community of inventors

Houston, TX, United States of America

Charles Lillja

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 4

Charles LilljaDavid Roy Hugh (3 patents)Charles LilljaCharles Lillja (3 patents)David Roy HughDavid Roy Hugh (3 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Reliability Incorporated (3 from 18 patents)


3 patents:

1. 616655 - Apparatus and method for seating and/or unseating printed circuit boards

2. 6166555 - Apparatus and method for seating and/or unseating printed circuit boards

3. 6017215 - Expandable panel for environmentally controllable chamber

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as of
12/31/2025
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