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Official data from INPI

AGENTE DE CURTIMENTO PARA COUROS

PublicadaInvention Patent

Application data

Number

PI8900473

Type

Invention Patent

Filing

02/02/1989

Publication

10/03/1989

Progress at the INPI

  1. Filing02/02/89
  2. Publication10/03/89
  3. Examination06/19/90
  4. Allowance02/14/95
  5. Grant08/29/95
  6. Expired12/15/09

The letters patent expired on 12/15/2009: 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Tioxide Group PLC

GB

Inventors

J. H. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8802747 · 02/06/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/03/1989

RPI 989

Pedido de patente depositado

#2.1

03/28/1989

RPI 962

Carta-patente expirada

#21.1

Patente extinta em 02/02/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

08/29/1995

RPI 1291

Deferimento

#9.1

02/14/1995

RPI 1263

Exigência - art. 36 da LPI

#6.1

10/25/1994

RPI 1247

Solicitação de exame técnico

#4.1

06/19/1990

RPI 1023

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