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Official data from INPI

PROCESSO PARA O ALVEJAMENTO DE UMA POLPA MECÂNICA DE LIGNOCELULOSE.

Em AnáliseInvention Patent

Application data

Number

PI8600637

Type

Invention Patent

Filing

02/14/1986

Publication

11/04/1986

Progress at the INPI

  1. Filing02/14/86
  2. Publication11/04/86
  3. Examination12/13/88
  4. Allowance03/09/93
  5. Grant08/31/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 12/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kamyr AB

SE

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Inventors

P. T. (pessoa física)

Technical data

IPC Classification

Priority claims

US

702.000 · 02/15/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/13/1988

RPI 947

Publicação do pedido de patente

#3.1

11/04/1986

RPI 837

Pedido de patente depositado

#2.1

08/05/1986

RPI 824

Carta-patente expirada

#21.1

Patente extinta em 14/02/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

08/31/1993

RPI 1187

Notificação para pagamento de retribuição

#13.1

06/29/1993

RPI 1178

Deferimento

#9.1

03/09/1993

RPI 1162

Exigência - art. 36 da LPI

#6.1

11/12/1991

RPI 1093

Exigência - art. 36 da LPI

#6.1

05/14/1991

RPI 1067

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