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US4864048A
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Process for preparing phosphonitrile compound having substituted hydroxyl group
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US4826806A
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Fluoran compounds and color forming recording materials using same
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JPS62294647A
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Benzoic acid derivative
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GB8709016D0
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Recording materials
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JPS63170083A
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Thermal color developing recording material
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JPS63159384A
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Fluorane compound and color-developing recording material
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JPS63156790A
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Novel fluorane derivative
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JPS63145366A
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Fluoran compound and color forming recording medium obtained by using the same
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JPS63132086A
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Heat-sensitive recording paper containing compound of nitrobenzyl benzoate as sensitizer
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JPS63130693A
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Reversibly colorable temperature indicator composition and temperature indicating equipment using same
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JPS63118290A
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Thermal color forming recording material
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JPS63109086A
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Thermal color forming recording material
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JPS62181361A
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Recording material
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JPS6394880A
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Coloring recording material
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JPS6363753A
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Novel fluoran compound and color forming recording medium obtained by using the same
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JPS6357593A
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Esters of phosphonitrile acid and production thereof
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JPS6345086A
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Thermal recording paper
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JPS6337158A
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Fluoran compound and color-developing recording material using same
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JPS6327492A
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Novel lactone compound and coloring recording substance
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JPS6320364A
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Spiro-benzanthracenephthalide compound, production thereof and color forming recording medium containing said compound
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