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Official data from INPI

APARELHO E PROCESSO PARA SEPARAÇÃO DE SÓLIDOS-FLUIDO, E, PROCESSO PARA SEPARA ÇÃO DE PARTÍCULAS DE CATALISADOR

Em AnáliseInvention Patent

Application data

Number

PI8602968

Type

Invention Patent

Filing

06/26/1986

Publication

03/17/1987

Progress at the INPI

  1. Filing06/26/86
  2. Publication03/17/87
  3. Examination03/21/89
  4. Allowance11/09/93
  5. Grant05/31/94
  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: 03/21/1989. 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

P. B. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8516335 · 06/28/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/21/1989

RPI 961

Publicação do pedido de patente

#3.1

03/17/1987

RPI 856

Pedido de patente depositado

#2.1

02/17/1987

RPI 852

Carta-patente expirada

#21.1

Patente extinta em 26/06/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

11/09/1993

RPI 1197

Exigência - art. 36 da LPI

#6.1

02/25/1992

RPI 1108

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