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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE POLÍMEROS DE MONÓXIDO DE CARBONO E ETENO E UM OU MAIS HIDROCARBONETOS OLEFINICAMENTE INSATURADOS

Em AnáliseInvention Patent

Application data

Number

PI8604072

Type

Invention Patent

Filing

08/27/1986

Publication

04/07/1987

Progress at the INPI

  1. Filing08/27/86
  2. Publication04/07/87
  3. Examination05/23/89
  4. Allowance09/19/95
  5. Grant04/30/96
  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: 05/23/1989. 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

E. K. (pessoa física)

NL

E. D. (pessoa física)

NL

J. B. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

NL

8502372 · 08/29/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/23/1989

RPI 970

Publicação do pedido de patente

#3.1

04/07/1987

RPI 859

Pedido de patente depositado

#2.1

03/17/1987

RPI 856

Carta-patente expirada

#21.1

Patente extinta em 27/08/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/30/1996

RPI 1326

Deferimento

#9.1

09/19/1995

RPI 1294

Exigência - art. 36 da LPI

#6.1

09/29/1992

RPI 1139

Conhecimento de parecer técnico

#7.1

07/16/1991

RPI 1076

6.2

08/07/1990

RPI 1027

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