Resources Contact Us Home
Poon; Stephen S. C.
Harlow, GB2
No. of patents:

Patent Number Title Of Patent Date Issued
4981775 Photothermographic elements January 1, 1991
A photothermographic element comprising a support bearing an image forming system comprising:(a) a photosensitive silver halide(b) an organic silver compound(c) a polymer binder and(d) a reducing agent for the organic silver compound, characterized in that the reducing agent comprises a redo
4594312 Heat bleachable dye systems June 10, 1986
Photothermographic elements containing heat bleachable acutance/antihalation dyes and thermographic elements employing heat bleachable dyes of the formula: ##STR1## in which: n is 2, 3, 4 or 5,at least one of R.sup.1 to R.sup.4 represent hydrogen and the remainder of R.sup.1 to R
4581323 Photothermographic element having topcoat bleachable antihalation layer April 8, 1986
A photothermographic element comprising a reflective base having coated thereon one or more layers constituting a photothermographic imaging medium in which a bleachable antihalation medium is coated over said photothermographic imaging medium, the components of the antihalation medi
4548896 Dye-bleach materials and process October 22, 1985
An imagewise bleachable composition is described comprising a dye in reactive association with a mesoionic compound. The composition may be bleached by radiation at wavelengths between 200 and 1000 nm.

  Recently Added Patents
Notification systems and methods that consider traffic flow predicament data
Image processing apparatus and image processing method
Polymer compositions and nonwoven compositions prepared therefrom
Horse stationary tab
System and method for broadcasting rich media to devices over multiple carriers
Method and apparatus for establishing a media clip
Power or voltage oscillation damping in a power transmission system
  Randomly Featured Patents
Method for calibrating a carbon dioxide monitor
Predrive circuit having level sensing control
Speed sensing system with automatic sensitivity adjustment
Method for growth of in situ p-type semiconductor films using a group V flux
Algorithm to print DV data to a DV deck with frame accuracy
Electrical interconnection apparatus
Automobile mountable bicycle carrier
Injector laser
Submachine gun for video games
Method to address carbon incorporation in an interpoly oxide