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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE FIBRAS DE POLÍMERO TERMOPLÁSTICO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8904721

Type

Invention Patent

Filing

09/20/1989

Publication

05/01/1990

Progress at the INPI

  1. Filing09/20/89
  2. Publication05/01/90
  3. Examination05/26/92
  4. Allowance03/03/98
  5. Grant12/29/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 12/26/2012. 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

A. B. (pessoa física)

NL

F. W. (pessoa física)

NL

J. D. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

GB

8822349.0 · 09/22/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 20/09/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

03/03/1998

RPI 1419

Exigência - art. 36 da LPI

#6.1

08/30/1994

RPI 1239

Solicitação de exame técnico

#4.1

05/26/1992

RPI 1121

Publicação do pedido de patente

#3.1

05/01/1990

RPI 1016

Pedido de patente depositado

#2.1

03/06/1990

RPI 1008

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