Growing community of inventors

Deptford, United Kingdom

David L Greenhead

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

David L Greenhead ↔ Frank Heybourn (1 patent)David L GreenheadDavid L Greenhead (1 patent)Frank HeybournFrank Heybourn (12 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Molins Plc (1 from 347 patents)


1 patent:

1. 4299322 - Cigarette conveyor system

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12/15/2025
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