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Official data from INPI

PROCESSO PARA RECUPERAÇÃO DE BENZENO, DE MISTURA DE TOLUENO E DE XILENO E DE TIOFENO DE UMA MISTURA DE BENZENO, TOLUENO E XILENO (BTX)

ArquivadaInvention Patent

Application data

Number

PI9801734

Type

Invention Patent

Filing

05/29/1998

Publication

12/28/1999

Progress at the INPI

  1. Filing05/29/98
  2. Publication12/28/99
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 05/29/1998 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/15/2004. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Audi S/A Comércio e Industria

SP, BR

Inventors

A. P. (pessoa física)

BR

Technical data

IPC Classification

Abstract

"PROCESSO PARA RECUPERAÇÃO DE BENZENO, DE MISTURA DE TOLUENO E DE XILENO E DE TIOFENO DE UMA MISTURA DE BENZENO, TOLUENO E XILENO (BTX)" constituído por processo que permite o fracionamento dessa mistura, processo esse que combina destilação, cristalização à frio e extração por meio de solvente, de modo à processar os elementos condensáveis do BTX (mistura de benzeno, tolueno, xileno e outros)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento definitivo - Art. 33 da LPI

#11.1.1

06/15/2004

RPI 1745

Arquivamento - Art. 33 da LPI

#11.1

10/28/2003

RPI 1712

Publicação do pedido de patente

#3.1

12/28/1999

RPI 1512

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