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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE COPOLÍMEROS DE MONÓXIDO DE CARBONO E COMPOSTOS OLEFINICAMENTE INSATURADOS

Prazo de SigiloInvention Patent

Application data

Number

PI8902616

Type

Invention Patent

Filing

06/06/1989

Publication

01/23/1990

Progress at the INPI

  1. Filing06/06/89
  2. Publication01/23/90
  3. Examination04/07/92
  4. Allowance03/19/96
  5. Grant12/31/96
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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

E. D. (pessoa física)

NL

J. D. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

NL

8801472 · 06/08/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/18/1989

RPI 978

Carta-patente expirada

#21.1

Patente extinta em 06/06/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

12/31/1996

RPI 1361

Deferimento

#9.1

03/19/1996

RPI 1320

Exigência - art. 36 da LPI

#6.1

08/30/1994

RPI 1239

Solicitação de exame técnico

#4.1

04/07/1992

RPI 1114

Publicação do pedido de patente

#3.1

01/23/1990

RPI 1003

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