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
Vaccine composition against Streptococcus pyogenes
Techniques to manage communications resources for a multimedia conference event
Method and apparatus for encoding and decoding video based on first sub-pixel unit and second sub-pixel unit
Method or system for investing and/or trading
Liquid crystal display backlight control
Conductor for transmitting electrical power
Stroboscopic image modulation to reduce the visual blur of an object being viewed by an observer experiencing vibration
  Randomly Featured Patents
Method of promoting healing in skin grafts
Controller for input-queued packet switch
Device for forming an image and method of correcting geometrical optical distortions in an image
Method and apparatus for the metered feed of coarse granular material into an air jet mill
Method of disabling various types of lock cylinders in general motors motor vehicles
Multifunction peripheral unit that executes a selected processing function using two selected devices
Extracting high frequency impedance in a circuit design using an electronic design automation tool
Circulating aspirator with improved temperature control
Grill for an automobile
Portable illumination device