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Official data from INPI

DESTILAÇÃO EXTRATIVA

ArquivadaInvention PatentPCT · US1991001065

Application data

Number

PI9106276

Type

Invention Patent

Filing

02/25/1991

Publication

04/13/1993

PCT

US1991001065

Progress at the INPI

  1. Filing02/25/91
  2. Publication04/13/93
  3. Abandoned09/28/93
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/03/1999. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. I. Du Pont de Nemours and Company

US

See this company's full portfolio

Inventors

G. L. (pessoa física)

US

J. W. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

US

500.259 · 03/27/1990

Abstract

Processo para separar cloreto de hidrogênio e tetrafluoroetileno, destilando, extrativamente, uma mistura de ambos em presença de um extrator que altera substancialmente as volatilidades relativas do cloreto de hidrogênio e do tetrafluoroetileno, por exemplo, um extrator orgânico peralogenado, como perfluorociclobutano, hexafluoropropileno ou 1,1,2-trifluoro-1,2,2-tricloroetano.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

11/03/1999

RPI 1504

Exigência - art. 36 da LPI

#6.1

11/17/1998

RPI 1454

Solicitação de exame técnico

#4.1

09/28/1993

RPI 1191

Notificação de entrada na fase nacional - PCT

#1.3

04/13/1993

RPI 1167

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