Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minnesota Mining and Manufacturing CofiledCriticalMinnesota Mining and Manufacturing Co
Priority to ES0249985ApriorityCriticalpatent/ES249985A3/es
Publication of ES249985A3publicationCriticalpatent/ES249985A3/es
Mejoras introducidas en la fabricación de papel copiador estableresistente a la humedadsensible al calorsusceptible de dar copias de elevado contrastede sujetos gráficos por procedimiento de reproducción termográficacaracterizadas porque dicho papel consiste en un soporte delgadotransparente y flexibleun revestimiento intermedio químicametne activo y sensible al calor de modo visibley un revestimiento de superficie protectorvisiblemente opacoque ofrece un fuerte contraste con la copia visible producida en dicho revestimiento intermedio.
ES0249985A1959-06-081959-06-08Mejoras introducidas en la fabricaciën de papel copiador
ExpiredES249985A3
(es)
Procedimiento para fabricar una pelicula celulësica acetato-plastica transparente, que permite registrar sonidos sobre fotografias, papeles impresos o estampados y otras superficies planas