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
Printing system, information processing apparatus, print job processing method, information processing method, program, and storage medium
Nano-pigment inkjet ink composition that has a low odor and is environmentally-friendly
Optical signal output apparatus, electrical signal output apparatus, and test apparatus
Multi-channel memory system including error correction decoder architecture with efficient area utilization
Push button
Security arrangements for extended USB protocol stack of a USB host system
Systems and methods for parameter adaptation
  Randomly Featured Patents
Process for reverse transcriptase activity measurement using fluorescence polarization
Method and apparatus for sample current spectroscopy surface measurement
Rocker arm structure
MOS Transistor circuit with a power-down function
Apparatus and method for removing liquid from a composition and for storing the deliquified composition
Medium voltage switch unit
Telephone dialer and methods
Hair wave iron
Method of compensating frequency error in communication system and apparatus for the same
Acoustical particle detector and method