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
Automatic setup of reflector instances
Method and apparatus for detection of LVDT core fallout condition
Avoiding conflict in update in distributed environment employing multiple clients
Method and apparatus for cutting high quality internal features and contours
Arbitration for memory device with commands
Optical angular position detection apparatus and method
Communications in an asynchronous cellular wireless network
  Randomly Featured Patents
Polarization rotator and a crystalline-quartz plate for use in an optical imaging system
Directional drilling assembly and method
Analyzer for the determination of the phenotype and the ABO blood group
Contact optimization for enhancing stress transfer in closely spaced transistors
Alkaline storage battery
High-lift device for aircraft
Vertically adjustable table
Camera control system, apparatus, and method which includes a camera control server that receives camera control requests from clients and issues control authority and wait times for control o
Elastic linear interpolymers