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Official data from INPI

Processo de tratamento de uma corrente gasosa contendo óxidos de nitrogênio e oxigênio.

ConcedidaInvention Patent

Application data

Number

PI8104430

Type

Invention Patent

Filing

07/10/1981

Publication

03/30/1982

Progress at the INPI

  1. Filing07/10/81
  2. Publication03/30/82
  3. Examination03/27/84
  4. Allowance10/15/85
  5. Grant05/27/86
  6. Expired10/08/96

The letters patent expired on 10/08/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/27/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

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Inventors

B. R. (pessoa física)

C. D. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

80 15461 · 07/11/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/27/1986

RPI 814

Deferimento

#9.1

10/15/1985

RPI 782

Exigência - art. 36 da LPI

#6.1

03/05/1985

RPI 750

6.2

10/02/1984

RPI 728

Solicitação de exame técnico

#4.1

03/27/1984

RPI 701

Publicação do pedido de patente

#3.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

10/08/1996

RPI 1349

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