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Official data from INPI

APARELHO PARA SEPARAÇÃO DE MISTURAS DE LÍQUIDOS E GÁS

ConcedidaInvention Patent

Application data

Number

PI8206846

Type

Invention Patent

Filing

11/25/1982

Publication

10/04/1983

Progress at the INPI

  1. Filing11/25/82
  2. Publication10/04/83
  3. Examination11/26/85
  4. Allowance12/13/88
  5. Grant08/29/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

H. S. (pessoa física)

J. P. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8135820 · 11/27/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

12/13/1988

RPI 947

Exigência - art. 36 da LPI

#6.1

08/02/1988

RPI 928

6.2

03/04/1987

RPI 854

Solicitação de exame técnico

#4.1

11/26/1985

RPI 788

Publicação do pedido de patente

#3.1

10/04/1983

RPI 676

Pedido de patente depositado

#2.1

01/18/1983

RPI 639

Carta-patente expirada

#21.1

Patente extinta em 25/11/97

07/01/2008

RPI 1956

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