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Official data from INPI

APARELHAGEM E PROCESSO PARA SEPARAÇÃO SÓLIDOS-FLUÍDO

Em AnáliseInvention Patent

Application data

Number

PI8605208

Type

Invention Patent

Filing

10/24/1986

Publication

07/28/1987

Progress at the INPI

  1. Filing10/24/86
  2. Publication07/28/87
  3. Examination11/07/89
  4. Allowance06/22/93
  5. Grant11/30/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

Shell Internationale Research Maatschappij B.V.

NL

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Inventors

P. B. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8526540 · 10/28/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/07/1989

RPI 994

Publicação do pedido de patente

#3.1

07/28/1987

RPI 875

Pedido de patente depositado

#2.1

04/07/1987

RPI 859

Carta-patente expirada

#21.1

Patente extinta em 24/10/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

11/30/1993

RPI 1200

Notificação para pagamento de retribuição

#13.1

11/09/1993

RPI 1197

Deferimento

#9.1

06/22/1993

RPI 1177

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