| 430 / | HD | RADIATION IMAGERY CHEMISTRY: PROCESS, COMPOSITION, OR PRODUCT THEREOF |
| 269 | DF | IMAGING AFFECTING PHYSICAL PROPERTY OF RADIATION SENSITIVE MATERIAL, OR PRODUCING NONPLANAR OR PRINTING SURFACE - PROCESS, COMPOSITION, OR PRODUCT {17} |
| 270.1 | DF | .~ Radiation sensitive composition or product or process of making {5} |
| 270.11 | DF | .~.~ Optical recording nonstructural layered product having a radiation sensitive composition layer claimed or solely disclosed as optically reorderable and optically machine readable {2} |
| 270.14 | DF | .~.~.~ Having read-write layer of 100 per cent organic or organometallic composition or mixtures thereof {1} |
| 270.15 | DF | .~.~.~.~ Containing nonpolymeric chromophore {2} |
| 270.18 | DF | .~.~.~.~.~ Having methine linkage {2} |
| 270.2 | | .~.~.~.~.~.~ Cyanine chromophore {1} |
| 270.21 | DF | .~.~.~.~.~.~.~> Indolenic cyanine chromophore |