RP

Roger H. Piggin

Eastman Kodak: 9 patents #1,246 of 8,114Top 20%
📍 Abbots Langley, GB: #6 of 14 inventorsTop 45%
Overall (All Time): #587,405 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
6573021 High contrast photographic element containing a novel combination of nucleators Julie Baker, Ian Barford, Philip J. Coldrick, Dawn J. Jenkins 2003-06-03
6187520 Photographic high contrast silver halide material and method of processing Julia Pich, Mark L. Magill 2001-02-13
5985509 Photographic high contrast silver halide material Allison Hazel C. Dale 1999-11-16
5736295 Photographic high contrast silver halide material Allison Hazel C. Dale 1998-04-07
5589318 High contrast photographic silver halide material Allison Hazel C. Dale, Richard A. Hallett, Paul R. McIntyre 1996-12-31
5512415 High contrast photographic silver halide material Allison Hazel C. Dale, Michael B. Ledger, David Beaumond 1996-04-30
5061609 Process of preparing a tabular grain silver bromoiodide emulsion and emulsions produced thereby Colin J. Bishop 1991-10-29
5061616 Process of preparing a tabular grain silver bromoiodide emulsion Philip J. Zola, Ming-Jye Lin 1991-10-29
4433048 Radiation-sensitive silver bromoiodide emulsions, photographic elements, and processes for their use John C. Solberg, Herbert S. Wilgus 1984-02-21