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Official data from INPI

PROCESSO PARA A ATIVAÇÃO DE UM CATALISADOR

Em AnáliseInvention Patent

Application data

Number

PI8503426

Type

Invention Patent

Filing

07/18/1985

Publication

04/08/1986

Progress at the INPI

  1. Filing07/18/85
  2. Publication04/08/86
  3. Examination04/12/88
  4. Allowance08/20/91
  5. Grant04/28/92
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 04/12/1988. 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

M. P. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

NL

8402300 · 07/20/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/12/1988

RPI 912

Publicação do pedido de patente

#3.1

04/08/1986

RPI 807

Pedido de patente depositado

#2.1

09/24/1985

RPI 779

Carta-patente expirada

#21.1

Patente extinta em 18/07/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

04/28/1992

RPI 1117

Notificação para pagamento de retribuição

#13.1

12/17/1991

RPI 1098

Republicação - classificação IPC

#15.11

11/05/1991

RPI 1092

Deferimento

#9.1

08/20/1991

RPI 1081

Exigência - art. 36 da LPI

#6.1

01/29/1991

RPI 1052

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