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Official data from INPI

DISPOSITIVO DE CALANDRAGEM

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905944

Type

Invention Patent

Filing

11/24/1989

Publication

06/19/1990

Progress at the INPI

  1. Filing11/24/89
  2. Publication06/19/90
  3. Examination11/17/92
  4. Allowance11/19/96
  5. Grant08/26/97
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 05/21/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Solvay & Cie

BE

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Inventors

J. B. (pessoa física)

BE

Technical data

IPC Classification

Priority claims

FR

88.15498 · 11/24/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 24/11/2009

05/21/2013

RPI 2211

Concessão da patente

#16.1

08/26/1997

RPI 1395

Deferimento

#9.1

11/19/1996

RPI 1355

Solicitação de exame técnico

#4.1

11/17/1992

RPI 1146

Publicação do pedido de patente

#3.1

06/19/1990

RPI 1023

Pedido de patente depositado

#2.1

04/03/1990

RPI 1012

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