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
Collating device, collating method, and program
Transmission apparatus and network protection method
Generating agricultural information products using remote sensing
Automatic fixup of network configuration on system image move
Three-term predictive adder and/or subtracter
Techniques to manage communications resources for a multimedia conference event
Laser receiver for detecting a relative position
  Randomly Featured Patents
Device for disintegrating
Process for preparaing polyhedral .alpha.-alumina particles
Degradable fiber systems for stimulation
Securing optical elements and optical devices
Pump for low flow rates
Heat exchanger
Using linear and log-linear model combinations for estimating probabilities of events
Cover for toilet handle
Nonlinear amplifying
Indole-derived styryl dye comprising an alkylene linker, a dye composition comprising this dye, and a process for lightening keratin materials using this dye