Inventor
MARSHALL JOHN L
US43 patents
⚠️ This page may combine multiple inventors who share the name “MARSHALL JOHN L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POLAROID CORP
20 patentsUS5395736AMar 7, 1995
Process for generation of acid and for imaging, and imaging medium for use therein
POLAROID CORP35 citations96
US7008759B2Mar 7, 2006
Dyes and use thereof in imaging members and methods
POLAROID CORP48 citations95
US6537410B2Mar 25, 2003
Thermal transfer recording system
POLAROID CORP56 citations95
US5578424ANov 26, 1996
Process for generation of unbuffered super-acid and for imaging
POLAROID CORP22 citations92
US5453345ASep 26, 1995
Imaging medium
POLAROID CORP27 citations92
US5445917AAug 29, 1995
Imaging medium
POLAROID CORP20 citations92
US5441850AAug 15, 1995
Imaging medium and process for producing an image
POLAROID CORP29 citations92
US5631118AMay 20, 1997
Imaging medium
POLAROID CORP20 citations91
US6004719ADec 21, 1999
Imaging medium and process for producing an image
POLAROID CORP25 citations89
US5582956ADec 10, 1996
Process for fixing an image, and medium for use therein
POLAROID CORP22 citations89
US6015907AJan 18, 2000
Trisubstituted pyridine dyes
POLAROID CORP6 citations74
US5534388AJul 9, 1996
Process for generation of acid and for imaging, and imaging medium for use therein
POLAROID CORP7 citations74
US6242154B1Jun 5, 2001
Process and composition for generation of acid
POLAROID CORP6 citations73
US6110638AAug 29, 2000
Process and composition for generation of acid
POLAROID CORP7 citations73
US5919608AJul 6, 1999
Medium and process for generating acid using sensitizing dye and supersensitizer
POLAROID CORP14 citations73
US5914213AJun 22, 1999
Process and composition for generation of acid
POLAROID CORP12 citations73
US6482950B1Nov 19, 2002
Squarylium compounds, and processes and intermediates for the synthesis of these compounds
POLAROID CORP12 citations72
US5919950AJul 6, 1999
Squarylium compounds, and processes and intermediates for the synthesis of these compounds
POLAROID CORP5 citations72
US5741630AApr 21, 1998
Process for fixing an image, and medium for use therein
POLAROID CORP12 citations71
US6307085B1Oct 23, 2001
Process and composition for generation of acid
POLAROID CORP2 citations62
ZINK IMAGING INC
4 patentsUS7829497B2Nov 9, 2010
Thermal imaging members and methods
ZINK IMAGING INC9 citations83
US7704667B2Apr 27, 2010
Dyes and use thereof in imaging members and methods
ZINK IMAGING INC5 citations61
US7807607B2Oct 5, 2010
Color-forming compounds and use thereof in imaging members and methods
ZINK IMAGING INC4 citations55
US9505255B2Nov 29, 2016
Thermal imaging members and methods
ZINK IMAGING INC1 citations51
PROBE TECHNOLOGY SERVICES INC
4 patentsUS7911876B2Mar 22, 2011
Method for initializing receiver channels in a cement bond logging tool
PROBE TECHNOLOGY SERVICES INC7 citations82
US7414918B2Aug 19, 2008
Method for normalizing signals in a cement bond logging tool
PROBE TECHNOLOGY SERVICES INC16 citations82
US7802619B2Sep 28, 2010
Firing trigger apparatus and method for downhole tools
PROBE TECHNOLOGY SERVICES INC15 citations79
US7411864B2Aug 12, 2008
Method for processing signals in a cement bong logging tool
PROBE TECHNOLOGY SERVICES INC8 citations69
E INK CORP
4 patentsUS11460722B2Oct 4, 2022
Colored electrophoretic displays
E INK CORP1 citations62
US12454598B2Oct 28, 2025
Charge control agents and particle dispersions including the same
E INK CORP0 citations61
US12195586B2Jan 14, 2025
Charge control agents and particle dispersions including the same
E INK CORP0 citations61
US11656522B2May 23, 2023
Solar temperature regulation system for a fluid
E INK CORP0 citations52