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US3720653A Expired / Lapsed US ⏱️ 0.0 years remaining

Colored interpolymers of an epoxy compound,vinylpyrrolidone and vinyl acetate

Assignee: L'Oréal SA
•
Filing: 1971-01-25
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Granted: 1973-03-13
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Expires: 1991-01-25
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Abstract

Abstract A COLORED COPOLYMER SOLUBLE IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER, ALCOHOL AND MIXTURES THEREOF CONSISTING ESSENTIALLY OF A FIRST COMONOMER CONTAINING A REACTIVE EPOXY GROUP AND BEING SELECTED FROM THE GROUP CONSISTING OF GLYCIDYL METHACRYLATE, GLYCIDYL ACRYLATE AND ALLYL GLYCIDYL ESTER, A SECOND COMONOMER CONSISTING OF VINYLPYRROLIDONE, THE REMAINING COMONOMER BEING ESSENTIALLY VINYL ACETATE, AND A DYE SELECTED FROM THE GROUP CONSISTING OF AZO, ANTHRAQUINONE AND BENZENE DYES CONTAINING AN EXTRA-NUCLEAR RADICAL HAVING THE FORMULA: -(CH2)P-NH-R WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, -CH3 AND -C2H5 AND P IS 2-6, SAID EXTRA-NUCLEAR RADICAL BEING BONDED TO THE AROMATIC NUCLEUS OF SAID DYE THROUGH A NITROGEN ATOM DIRECTLY ATTACHED TO SAID AROMATRIC NUCLEUS AND SAID DYE BEING BONDED TO SAID REACTIVE EPOXY GROUP THROUGH THE TERMINAL NITROGEN ATOM OF SAID EXTRA-NUCLEAR RADICAL.

Inventors

  • 👤 G Kalopissis
  • 👤 A Viout

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 13:33
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/35; A61K8/355; A61K8/40; A61K8/41; A61K8/418; A61K8/49; A61K8/4906; A61K8/4926; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; A61K8/8164; A61K8/817; A61K8/8182; C; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F22/00; C08F22/36; C08F8/00; C08F8/14; C08F8/30; C08F8/32; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/3209; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/28; C09B1/285; C09B69/00; C09B69/10; A61K2800/00; A61K2800/40; A61K2800/57; C08F220/00; C08F220/02; C08F220/10; C08F220/26; C08F220/32; C08F220/325

Claims Analysis

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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-03-12 1976-09-11 1977-03-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-03-12 1980-09-11 1981-03-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-03-12 1984-09-11 1985-03-13 $7700.00 Window Closed / Lapsed

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