Inventor
WALLER DAVID P
US42 patents
⚠️ This page may combine multiple inventors who share the name “WALLER DAVID P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POLAROID CORP
34 patentsUS5667943ASep 16, 1997
Process for thermochemical generation of acid and for thermal imaging, and imaging medium for use therein
POLAROID CORP34 citations96
US5534393AJul 9, 1996
Process for thermochemical generation of acid and for thermal imaging
POLAROID CORP36 citations96
US5401619AMar 28, 1995
Process for thermochemical generation of acid and for thermal imaging, and imaging medium for use therein
POLAROID CORP43 citations96
US5278031AJan 11, 1994
Process for thermochemical generation of squaric acid and for thermal imaging, and imaging medium for use therein
POLAROID CORP46 citations96
US5243052ASep 7, 1993
Mixed carbonate ester derivatives of quinophthalone dyes and their preparation
POLAROID CORP55 citations96
US5350870ASep 27, 1994
Thermal imaging methods and materials
POLAROID CORP41 citations92
US5294375AMar 15, 1994
Thermochromic materials
POLAROID CORP23 citations91
US5244771ASep 14, 1993
Photographic products and processes
POLAROID CORP25 citations90
US5691458ANov 25, 1997
Benzoisothiazole azo dyes
POLAROID CORP18 citations83
US5319143AJun 7, 1994
Bis(aminoethanethiols)
POLAROID CORP11 citations74
US4891298AJan 2, 1990
Photographic products and processes
POLAROID CORP7 citations74
US5716754AFeb 10, 1998
Image-recording materials
POLAROID CORP8 citations73
US5415970AMay 16, 1995
Image-recording material
POLAROID CORP6 citations73
US5368979ANov 29, 1994
Thermally developable photosensitive element
POLAROID CORP13 citations73
US5316887AMay 31, 1994
Thermally developable photosensitive material
POLAROID CORP6 citations73
US5236884AAug 17, 1993
Thermal imaging methods and materials
POLAROID CORP10 citations73
US5192645AMar 9, 1993
Thermal imaging method
POLAROID CORP8 citations73
US4636568AJan 13, 1987
Aminoether compounds
POLAROID CORP9 citations73
US4535051AAug 13, 1985
Photographic products and processes with color shifted dye
POLAROID CORP8 citations73
US5717079AFeb 10, 1998
Color-providing compounds
POLAROID CORP4 citations63
US5658705AAug 19, 1997
Image-recording materials with 1,3-sulfur-nitrogen dye releasers
POLAROID CORP2 citations63
US5811530ASep 22, 1998
Image-recording materials
POLAROID CORP3 citations62
US5430156AJul 4, 1995
Color-providing compound having two or more cyclic 1,3 sulfur-nitrogen groups and two or more color-providing moieties
POLAROID CORP1 citations62
US5424475AJun 13, 1995
Thermal imaging dye precursors
POLAROID CORP2 citations62
US5332654AJul 26, 1994
Reversible redox-controlled imaging method
POLAROID CORP3 citations62
US5258279ANov 2, 1993
Reversible redox-controlled imaging methods
POLAROID CORP3 citations62
US6103912AAug 15, 2000
Photographic products and processes
POLAROID CORP4 citations60
US5414091AMay 9, 1995
Dye-providing compounds
POLAROID CORP2 citations60
US5340689AAug 23, 1994
Image-recording materials with cyclic 1,3-sulfur-nitrogen dye providing compounds
POLAROID CORP3 citations60
US5674986AOct 7, 1997
Photographically useful compounds including at least one 1,3-sulfur-oxygen ring system
POLAROID CORP1 citations52
US5569574AOct 29, 1996
Image-recording materials
POLAROID CORP0 citations52
US5399709AMar 21, 1995
N-substituted triarylmethane sulfonamides and method of preparation
POLAROID CORP1 citations51
US4631344ADec 23, 1986
Photographic products and processes
POLAROID CORP1 citations51
US3944569AMar 16, 1976
Aminomethyl-substituted 1-naphthol phthalides and naphthalides
POLAROID CORP0 citations51
MERCK PATENT GMBH
5 patentsUS9035015B1May 19, 2015
Photovoltaic cell containing novel photoactive polymer
MERCK PATENT GMBH6 citations81
US8969508B2Mar 3, 2015
Photovoltaic cell containing novel photoactive polymer
MERCK PATENT GMBH4 citations70
US8883954B2Nov 11, 2014
Photoactive polymers
MERCK PATENT GMBH3 citations59
US9178166B2Nov 3, 2015
Conjugated polymers
MERCK PATENT GMBH1 citations51
US9515274B2Dec 6, 2016
Photovoltaic cells
MERCK PATENT GMBH0 citations40