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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE UM COPOLÍMERO DE ISO-OLEFINA E PARA-ALQUIL-ESTIRENO.

Prazo de SigiloInvention Patent

Application data

Number

PI8902417

Type

Invention Patent

Filing

05/29/1989

Publication

01/16/1990

Progress at the INPI

  1. Filing05/29/89
  2. Publication01/16/90
  3. Examination03/03/92
  4. Allowance07/07/98
  5. Grant11/24/98
  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: 07/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents Inc

US

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Inventors

H. W. (pessoa física)

US

K. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

199,665 · 05/27/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/11/1989

RPI 977

Carta-patente expirada

#21.1

Patente extinta em 29/05/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

DEFERIDO DE ACORDO COM A LEI 9279 DE 14/05/96.

07/07/1998

RPI 1437

Exigência - art. 36 da LPI

#6.1

09/13/1994

RPI 1241

Solicitação de exame técnico

#4.1

03/03/1992

RPI 1109

Publicação do pedido de patente

#3.1

01/16/1990

RPI 1002

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