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Official data from INPI

MOTOR DE COMBUSTÃO INTERNA E PROCESSO PARA REDUÇÃO POR GÁS DE EXAUSTÀO DE MOTORES DE COMBUSTÀO INTERNA

ConcedidaInvention Patent

Application data

Number

PI8004544

Type

Invention Patent

Filing

07/22/1980

Publication

03/23/1982

Progress at the INPI

  1. Filing07/22/80
  2. Publication03/23/82
  3. Examination09/08/82
  4. Allowance11/26/85
  5. Grant06/24/86
  6. Expired09/19/95

The letters patent expired on 09/19/1995: 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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Johnson Matthey & Co. Limited

GB

See this company's full portfolio

Inventors

C. L. (pessoa física)

E. E. (pessoa física)

M. R. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8010768 · 03/31/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

04/15/1986

RPI 808

Deferimento

#9.1

11/26/1985

RPI 788

8.1

03/19/1985

RPI 752

Exigência - art. 36 da LPI

#6.1

07/10/1984

RPI 716

Exigência - art. 36 da LPI

#6.1

11/16/1983

RPI 682

Solicitação de exame técnico

#4.1

09/08/1982

RPI 620

Publicação do pedido de patente

#3.1

03/23/1982

RPI 596

Carta-patente expirada

#21.1

09/19/1995

RPI 1294

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