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Class Information
Number: 503/200
Name: Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor > Having a colorless color-former, developer therefor, or method of use
Description: Material which is used to form a visible record by causing a substance to react chemically to form a color where there was no color, or to form a different color from the original, or a method of using such material.










Sub-classes under this class:

Class Number Class Name Patents
503/202 Color developed by mere decomposition of color-former 80
503/206 Component noncoextensive with substrate 149
503/203 Duplicating master 16
503/205 Having a color desensitizer 90
503/208 Having constituent defined in terms of melting temperature 281
503/209 Having nonchromogenic liquid spread-control or transfer-improving agent or component, color modifier, stabilizer or preservative 485
503/207 Having nonreactant particles of defined size 288
503/210 Heavy metal reactant 141
503/218 Identified color-former 205
503/225 Identified electron acceptor (developer) 505
503/216 Identified organic electron acceptor (developer) other than phenolic resin 551
503/214 Identified reactant isolating material or capsule wall material or binder resin 376
503/213 Identified solvent or dispersant for color-former, other than mere mineral oil 168
503/201 Method of use, kit, or combined with marking instrument or organ 525
503/204 Plural colors or plural diverse systems 199
503/226 Spatial relationship specified between color-former and developer 718


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
6956010 Rewritable thermal label of a non-contact type and method for using the label Oct. 18, 2005
6933029 Label sheet for electrophotographic process and image forming method using the same Aug. 23, 2005
6921740 Electron-receiving compound and thermal recording material Jul. 26, 2005
6919297 Heat-sensitive recording material Jul. 19, 2005
6900159 Recording material May. 31, 2005
6893999 Recording material May. 17, 2005
6890879 Recording material and image forming apparatus May. 10, 2005
6875726 Heat-sensitive recording material and process for production of the same Apr. 5, 2005
6872687 Thermosensitive recording material Mar. 29, 2005
6861388 Antifalsification recording paper and paper support therefor Mar. 1, 2005
6858564 Thermal paper with preprinted indicia Feb. 22, 2005
6852671 Heat-sensitive recording material Feb. 8, 2005
6821556 Process for producing heat sensitive recording material Nov. 23, 2004
6818591 Reversible thermosensitive recording medium, label, and image forming and erasing method using the same Nov. 16, 2004
6803344 Thermal paper with preprinted indicia Oct. 12, 2004
6800588 Thermal recording material Oct. 5, 2004
6797318 Heat-sensitive recording material and heat-sensitive recording process Sep. 28, 2004
6784136 Heat-sensitive recording material Aug. 31, 2004
6780820 Thermosensitive recording material Aug. 24, 2004
6780819 Heat sensitive recording material Aug. 24, 2004
6770592 Reversible thermosensitive recording medium and image processing method using the same Aug. 3, 2004
6767861 Heat-sensitive recording material Jul. 27, 2004
6762150 Image recording apparatus and method and recording sheet for use therewith Jul. 13, 2004
6759366 Dual-sided imaging element Jul. 6, 2004
6756192 Imaging element containing a blocked photographically useful compound Jun. 29, 2004
6734138 Reversible thermosensitive recording material, and image recording and erasing method using the recording material May. 11, 2004
6730632 Heat-sensitive recording material May. 4, 2004
6720287 Heat sensitive recording material and microcapsule solution Apr. 13, 2004
RE38496 Thermosensitive recording material Apr. 13, 2004
6710015 Thermosensitive recording material Mar. 23, 2004
6667275 Heat-sensitive recording material Dec. 23, 2003
6660689 Recording material Dec. 9, 2003
6660687 CF sheets Dec. 9, 2003
6660452 Optical information memory medium and display recording method using the same Dec. 9, 2003
6656880 Heat-sensitive recording material Dec. 2, 2003
6640717 Method of forming image on card and apparatus therefor Nov. 4, 2003
6635601 Thermographic imaging elements and processes for their use Oct. 21, 2003
6630424 Thermosensitive recording material, block copy sheet using the recording material and printing plate prepared by using the block copy sheet Oct. 7, 2003
6627297 Printable laminate Sep. 30, 2003
6623852 Use of a heat-sensitive recording material as a label Sep. 23, 2003
6616190 Security elements Sep. 9, 2003
6613403 Ink with near infrared fluorophores and U.V. absorbers Sep. 2, 2003
6608002 Direct thermal printable film with friction-reducing layer Aug. 19, 2003
6596668 Heat-sensitive recording material Jul. 22, 2003
6562755 Thermal paper with security features May. 13, 2003
6537711 Reversible recording material based on thermal energy Mar. 25, 2003
6509295 Record material for pressure-sensitive copying systems Jan. 21, 2003
6495490 Thermal recording media Dec. 17, 2002
6494950 Thermochromic microencapsulated pigments Dec. 17, 2002
6479431 Lamination and method for forming an information displaying label Nov. 12, 2002

1 2 3 4 5 6 7 8 9 10 11 12










 
 
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