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Official data from INPI

PROCESSO PARA A MANUFATURA DE UM OLIGÔMERO DE OLEFINA E RECUPERAÇÃO DE CATALISADORES PARA OLIGOMERIZAÇÃO DE OLEFINA

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905244

Type

Invention Patent

Filing

10/16/1989

Publication

05/15/1990

Progress at the INPI

  1. Filing10/16/89
  2. Publication05/15/90
  3. Examination11/27/90
  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

Idemitsu Petrochemical Co, Ltd

JP

See this company's full portfolio

Inventors

M. A. (pessoa física)

JP

T. K. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

1-9.913 · 01/20/1989

JP

63-259.397 · 10/17/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 16/10/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

03/25/1997

RPI 1373

Deferimento

#9.1

03/26/1996

RPI 1321

Exigência - art. 36 da LPI

#6.1

01/31/1995

RPI 1261

Solicitação de exame técnico

#4.1

11/27/1990

RPI 1043

Publicação do pedido de patente

#3.1

05/15/1990

RPI 1018

Pedido de patente depositado

#2.1

03/27/1990

RPI 1011

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