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Official data from INPI

PROCESSO DE TRATAMENTO DE POLPA CELULOSICA

ConcedidaInvention Patent

Application data

Number

PI8108558

Type

Invention Patent

Filing

12/31/1980

Publication

10/19/1982

Progress at the INPI

  1. Filing12/31/80
  2. Publication10/19/82
  3. Examination01/02/85
  4. Allowance02/12/86
  5. Grant08/26/86
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 08/26/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KAMYR AB [SE]

Inventors

J. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/26/1986

RPI 827

Notificação para pagamento de retribuição

#13.1

06/24/1986

RPI 818

Deferimento

#9.1

02/12/1986

RPI 799

Exigência - art. 36 da LPI

#6.1

07/23/1985

RPI 770

Solicitação de exame técnico

#4.1

01/02/1985

RPI 741

Publicação do pedido de patente

#3.1

10/19/1982

RPI 626

Pedido de patente depositado

#2.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

Patente extinta em 30/12/96

08/19/2008

RPI 1963

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