US Patent Class 503
RECORD RECEIVER HAVING PLURAL INTERACTIVE LEAVES OR A COLORLESS COLOR FORMER, METHOD OF USE, OR DEVELOPER THEREFOR




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Current as of: June, 1999
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  DF  CLASS NOTES
200  DF  HAVING A COLORLESS COLOR-FORMER, DEVELOPER THEREFOR, OR METHOD OF USE
201  DF  .~ Method of use, kit, or combined with marking instrument or organ
202  DF  .~ Color developed by mere decomposition of color-former
203  DF  .~ Duplicating master
204  DF  .~ Plural colors or plural diverse systems
205  DF  .~ Having a color desensitizer
206  DF  .~ Component noncoextensive with substrate
207  DF  .~ Having nonreactant particles of defined size
208  DF  .~ Having constituent defined in terms of melting temperature
209  DF  .~ Having nonchromogenic liquid spread-control or transfer-improving agent or component, color modifier, stabilizer or preservative
210  DF  .~ Heavy metal reactant
211  DF  .~.~ Metal of atomic number 22-30
212  DF  .~.~.~ Zinc
213  DF  .~ Identified solvent or dispersant for color-former, other than mere mineral oil
214  DF  .~ Identified reactant isolating material or capsule wall material or binder resin
215  DF  .~.~ Synthetic resin capsule walls
216  DF  .~ Identified organic electron acceptor (developer) other than phenolic resin
217  DF  .~.~ And identified color-former
218  DF  .~ Identified color-former
219  DF  .~.~ And identified inorganic electron acceptor (developer), other than mere clay
220  DF  .~.~ Furanone moiety-containing
221  DF  .~.~.~ Fluoran or derivative
222  DF  .~.~.~.~ Molecule having plural fluorans or more than three rings fused together
223  DF  .~.~ Azole moiety-containing
224  DF  .~.~ Polyphenylmethane moiety-containing
225  DF  .~ Identified electron acceptor (developer)
226  DF  .~ Spatial relationship specified between color-former and developer
227  DF  HAVING PLURAL INTERACTIVE LEAVES