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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE UMA COMPOSIÇÃO CATALISADORA PARA POLIMERIZAÇÃO DE ALQUENO E PROCESSO PARA POLIMERIZAÇÃO DE ALQUENO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905405

Type

Invention Patent

Filing

10/24/1989

Publication

05/22/1990

Progress at the INPI

  1. Filing10/24/89
  2. Publication05/22/90
  3. Examination05/26/92
  4. Allowance03/26/96
  5. Grant03/25/97
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Montell Technology Company B.V

NL

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

I. C. (pessoa física)

NL

P. B. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8825056 · 10/26/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 24/10/2004

12/29/2009

RPI 2034

Transferência deferida

#25.1

Transferido de: Shell International Research Maatschappij B.V.

11/10/1998

RPI 1453

Concessão da patente

#16.1

03/25/1997

RPI 1373

Republicação - classificação IPC

#15.11

02/25/1997

RPI 1369

Deferimento

#9.1

03/26/1996

RPI 1321

Exigência - art. 36 da LPI

#6.1

07/18/1995

RPI 1285

Solicitação de exame técnico

#4.1

05/26/1992

RPI 1121

Publicação do pedido de patente

#3.1

05/22/1990

RPI 1019

Pedido de patente depositado

#2.1

03/01/1990

RPI 1007

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