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
Plural component proportioner
Lubricant composition and antioxident composition
Electronic flash device
(-)-epigallocatechin gallate derivatives for inhibiting proteasome
Delay interferometer using magneto-optic effect of a variable faraday rotator
Pet burial pod
Configurable pitch reducing optical fiber array
  Randomly Featured Patents
Quick-change plastic strip display board
Methods and systems for on-column protein delipidation
Optical device for a display having tapered waveguide and process for making the same
Adhesive pads for ostomy bags
Uplink power control message indexing in wireless OFDMA systems
Brake-release accelerating device and automatic gradual-discharge fluid brake
Apparatus and method for setting wakeup times in a communication device based on estimated lock on time of frequency synthesizer
Potential fixing device, potential fixing method, and capacitance measuring instrument
Internal baffle system for a multi-cylinder compressor
Cable or the like protection and guide device