Growing community of inventors

Holyport, United Kingdom

Derek D Roberts

Average Co-Inventor Count = 2.00

ph-index = 3

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 = 20

Derek D RobertsMark Andrew Sanders (3 patents)Derek D RobertsDerek D Roberts (3 patents)Mark Andrew SandersMark Andrew Sanders (22 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Acushnet Limited (3 from 6 patents)


3 patents:

1. 5048856 - Golf trolley

2. D319327 - Golf cart

3. 4961593 - Golf trolley

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as of
12/19/2025
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