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Bonsall, CA, United States of America

William Joseph Lang

Average Co-Inventor Count = 3.00

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 = 5

William Joseph LangRalph E Johnson (2 patents)William Joseph LangJohn B Hartley (2 patents)William Joseph LangWilliam Joseph Lang (2 patents)Ralph E JohnsonRalph E Johnson (17 patents)John B HartleyJohn B Hartley (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Illumination Technology, Inc. (2 from 8 patents)


2 patents:

1. 7106002 - Light bulb with glass envelope having light transmission of a wavelength only up to 700 nm

2. 5686786 - Light bulb with glass envelope having light transmission of a wavelength

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as of
12/13/2025
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