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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM IMIDAZOL.

Em AnáliseInvention Patent

Application data

Number

PI8604474

Type

Invention Patent

Filing

09/18/1986

Publication

05/19/1987

Progress at the INPI

  1. Filing09/18/86
  2. Publication05/19/87
  3. Examination07/18/89
  4. Allowance05/25/93
  5. Grant10/26/93
  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: 07/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

R. P. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8523255 · 09/20/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/18/1989

RPI 978

Publicação do pedido de patente

#3.1

05/19/1987

RPI 865

Pedido de patente depositado

#2.1

03/24/1987

RPI 857

Carta-patente expirada

#21.1

Patente extinta em 18/09/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

10/26/1993

RPI 1195

Deferimento

#9.1

05/25/1993

RPI 1173

Exigência - art. 36 da LPI

#6.1

01/28/1992

RPI 1104

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