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Official data from INPI

Célula eletrolítica de leito fluidizado

PublicadaInvention Patent

Application data

Number

PI8704871

Type

Invention Patent

Filing

09/23/1987

Publication

05/17/1988

Progress at the INPI

  1. Filing09/23/87
  2. Publication05/17/88
  3. Examination10/23/90
  4. Allowance11/15/94
  5. Grant06/27/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 05/17/1988. 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

A. H. (pessoa física)

NL

G. J. (pessoa física)

NL

J. S. (pessoa física)

NL

R. M. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8623069 · 09/25/1986

GB

8705471 · 03/09/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/17/1988

RPI 917

Pedido de patente depositado

#2.1

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 23/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

06/27/1995

RPI 1282

Notificação para pagamento de retribuição

#13.1

03/21/1995

RPI 1268

Deferimento

#9.1

11/15/1994

RPI 1250

Exigência - art. 36 da LPI

#6.1

06/21/1994

RPI 1229

Solicitação de exame técnico

#4.1

10/23/1990

RPI 1038

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