| Class 503 | RECORD RECEIVER HAVING PLURAL INTERACTIVE LEAVES OR A COLORLESS COLOR FORMER, METHOD OF USE, OR DEVELOPER THEREFOR |
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![[List of Pre Grant Publications for class 503 subclass 200]](../as.gif) | ![[List of Patents for class 503 subclass 200]](../ps.gif) | 200 | HAVING A COLORLESS COLOR-FORMER, DEVELOPER THEREFOR, OR METHOD OF USE |
| | 201 |  Method of use, kit, or combined with marking instrument or organ |
| | 202 | Color developed by mere decomposition of color-former |
| | 203 | Duplicating master |
| | 204 | Plural colors or plural diverse systems |
| | 205 | Having a color desensitizer |
| | 206 | Component noncoextensive with substrate |
| | 207 | Having nonreactant particles of defined size |
| | 208 | Having constituent defined in terms of melting temperature |
| | 209 | Having nonchromogenic liquid spread-control or transfer-improving agent or component, color modifier, stabilizer or preservative |
| | 210 | Heavy metal reactant |
| | 213 | Identified solvent or dispersant for color-former, other than mere mineral oil |
| | 214 | Identified reactant isolating material or capsule wall material or binder resin |
| | 216 | Identified organic electron acceptor (developer) other than phenolic resin |
| | 218 | Identified color-former |
| | 219 |  And identified inorganic electron acceptor (developer), other than mere clay |
| | 220 | Furanone moiety-containing |
| | 223 | Azole moiety-containing |
| | 224 | Polyphenylmethane moiety-containing |
| | 225 | Identified electron acceptor (developer) |
| | 226 | Spatial relationship specified between color-former and developer |
| | 227 | HAVING PLURAL INTERACTIVE LEAVES |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |