Growing community of inventors

Cumberland, RI, United States of America

Donald H Lavange

Average Co-Inventor Count = 1.00

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 = 8

Donald H LavangeDonald H Lavange (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Polytop Corporation (1 from 38 patents)


1 patent:

1. 5190176 - Child resistant closure with protective flange and canted upper wall

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12/13/2025
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