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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE POLIISOPRENO E CATALISADOR QUE CONTÉM BETA-TICL3COMPREENDENDO UM ATIVADOR.

ConcedidaInvention Patent

Application data

Number

PI8305888

Type

Invention Patent

Filing

10/25/1983

Publication

05/29/1984

Progress at the INPI

  1. Filing10/25/83
  2. Publication05/29/84
  3. Examination07/15/86
  4. Allowance01/10/89
  5. Grant08/29/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/29/1989. 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

B. G. (pessoa física)

NL

J. C. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

NL

8204147 · 10/27/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

05/30/1989

RPI 971

Deferimento

#9.1

01/10/1989

RPI 951

Exigência - art. 36 da LPI

#6.1

06/14/1988

RPI 921

Solicitação de exame técnico

#4.1

07/15/1986

RPI 821

Publicação do pedido de patente

#3.1

05/29/1984

RPI 710

Pedido de patente depositado

#2.1

01/03/1984

RPI 689

Carta-patente expirada

#21.1

Patente extinta em 25/10/98

07/01/2008

RPI 1956

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