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
Tandem electric machine arrangement
Process for preparing MDA via the stage of the aminal
Reliable event broadcaster with multiplexing and bandwidth control functions
Method and system for providing intelligent call rejection and call rollover in a data network
Policy based cryptographic application programming interface in secure memory
Braided boomerang pet toy
Composite materials comprising aggregate and an elastomeric composition
  Randomly Featured Patents
Substrate having fullerene thin wires and method for manufacture thereof
Golf club with deep undercut
Method of fabricating a semiconductor device by oxidizing aluminum-bearing 1H-V semiconductor in water vapor environment
Device for resetting a digital clock from a remote location
System and method for rapidly identifying the existence and location of an item in a file
Electromachining process and apparatus
Shaft retaining apparatus
Hydraulic pump unit with orifice plate for vehicle brake control system
Method of spraying liquids under the form of foam by means of deformable containers and device using this method
Engine power train control method and control apparatus for a vehicle