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Official data from INPI

PROCESSO PARA A SEPARAÇÃO DE 1,1,1,2-TETRAFLUORETANO (HFA 134A) DE UMA MISTURA RICA EM HFA 134A DO MESMO COM HF E/OU 1-CLORO-2,2-DIFLUORETILENO (CFC 1122).

ArquivadaInvention Patent

Application data

Number

PI9102797

Type

Invention Patent

Filing

07/03/1991

Publication

02/04/1992

Progress at the INPI

  1. Filing07/03/91
  2. Publication02/04/92
  3. Examination04/19/94
  4. Allowance03/23/99
  5. Abandoned
  6. In force

The application was allowed on 03/23/1999 but abandoned for failure to pay the grant fee (art. 38 of the Brazilian IP Act). The letters patent were never issued.

Talk to a specialist

Latest action published by the INPI: 04/11/2000. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

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Inventors

A. T. (pessoa física)

GB

R. W. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

9014851.1 · 07/04/1990

GB

9014852.9 · 07/04/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

Arquivamento - Artigo 38 & 2º da LPI.

04/11/2000

RPI 1527

Deferimento

#9.1

03/23/1999

RPI 1472

Solicitação de exame técnico

#4.1

04/19/1994

RPI 1220

Publicação do pedido de patente

#3.1

02/04/1992

RPI 1105

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