Growing community of inventors

Northwood, United Kingdom

Michael B Ledger

Average Co-Inventor Count = 2.67

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

Michael B Ledger ↔ Roger H Piggin (1 patent)Michael B Ledger ↔ Allison Hazel Dale (1 patent)Michael B Ledger ↔ Jurjen Frederik Winkel (1 patent)Michael B Ledger ↔ David Beaumond (1 patent)Michael B LedgerMichael B Ledger (2 patents)Roger H PigginRoger H Piggin (9 patents)Allison Hazel DaleAllison Hazel Dale (4 patents)Jurjen Frederik WinkelJurjen Frederik Winkel (4 patents)David BeaumondDavid Beaumond (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Eastman-kodak Company (2 from 21,594 patents)


2 patents:

1. 6383711 - High contrast photographic silver halide material

2. 5512415 - High contrast photographic silver halide material

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12/29/2025
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