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Official data from INPI

PROCESSO PARA FUNCIONALIZAR POLÍMEROS DE HIDROCARBONETOS, E, EXTRUSOR PARA FUNCIONALIZAR POLÍMEROS DE HIDROCARBONETOS.

Prazo de SigiloInvention Patent

Application data

Number

PI8903123

Type

Invention Patent

Filing

06/26/1989

Publication

02/06/1990

Progress at the INPI

  1. Filing06/26/89
  2. Publication02/06/90
  3. Examination03/17/92
  4. Allowance12/22/98
  5. Grant06/29/99
  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: 08/22/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

J. M. (pessoa física)

US

J. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

211,748 · 06/27/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

08/22/1989

RPI 983

Carta-patente expirada

#21.1

Patente extinta em 29/06/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

06/29/1999

RPI 1486

Deferimento

#9.1

12/22/1998

RPI 1459

Exigência - art. 36 da LPI

#6.1

08/25/1998

RPI 1444

Exigência - art. 36 da LPI

#6.1

05/05/1998

RPI 1428

Solicitação de exame técnico

#4.1

03/17/1992

RPI 1111

Publicação do pedido de patente

#3.1

02/06/1990

RPI 1005

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