Resources Contact Us Home
Phenylsulfamoyl couplers

Image Number 11 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
Digital broadcast receiver and method for processing caption thereof
System for determining movement properties of a guided vehicle
Arbitration for memory device with commands
Wireless communication system and wireless communication method
Advanced CAPTCHA using images in sequence
System and method for detecting an earth ground fault of an external power supply connected to a vehicle
Communication apparatus, communication method, and program for exchanging data with a target
  Randomly Featured Patents
Insulatior for a multi-power system
Fluid distributor, and a method of affixing extensions to the fluid distributor
Medium replaceable recording and reproducing apparatus in which full initialization is not needed depending on the inserted state of the medium
Compact electronic module having a RAM device
Optical measuring system and optical measuring method
Metal diffusion and use
NMR local coil network
Semiconductor device with temperature control mechanism
Process for coating fluoroelastomer fuser member using fluorinated surfactant
High-tech computerized off-gas combustion treatment and apparatus