Growing community of inventors

Auckland, New Zealand

Derek John Englefield

Average Co-Inventor Count = 2.00

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 = 17

Derek John EnglefieldDerek John Englefield (2 patents)
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Inventor’s number of patents
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Strength of working relationships

2 patents:

1. D565386 - Three-tine hinge

2. D556011 - Two-tine hinge

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as of
12/19/2025
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