Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Phenylsulfamoyl couplers










Image Number 3 for United States Patent #T998007.

Ballasted primary and secondary 3'-sulfamoyl-1-hydroxy-2-naphthanilide couplers are disclosed as well as compositions and photographic elements containing these couplers in coupler solvent particles. The coupler solvent particles are comprised of a combination of a coupler solvent and the coupler capable of permitting the formation of a microcrystalline dye. Surprisingly these microcrystalline dyes exhibit a broadened absorption characteristic in the 750 to 850 mm region of the spectrum. Dye images having such absorption characteristics are particularly suited to forming integral infrared absorbing sound tracks in photographic elements, such as motion picture projection films.








 
 
  Recently Added Patents
Apparatus for merging spatial audio streams
Camera body, and camera system
Low power voltage controlled oscillator (VCO)
Information processing apparatus and method
Data converter with configurable functions
Probiotic Bifidobacterium strains
Light transformation particle and photobioreactor
  Randomly Featured Patents
Laser print apparatus with dual halftones
Low-permittivity connector and flat-cable
Sequestering agents and compositions produced therefrom
Conical connecting device for connecting machine components
Selective call receiver with battery saving features and method therefor
Collapsible container with folding walls and spring latches
Erase operation for use in non-volatile memory
Elastomeric electroluminescent lamp
Bicycle crank
Crest factor reduction with phase optimization