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Official data from INPI

PROCESSO PARA PRODUÇÃO DE POLPA CELULÓSICA

Em AnáliseInvention Patent

Application data

Number

PI8601558

Type

Invention Patent

Filing

04/04/1986

Publication

12/09/1986

Progress at the INPI

  1. Filing04/04/86
  2. Publication12/09/86
  3. Examination11/01/88
  4. Allowance11/23/99
  5. Grant05/02/00
  6. Expired12/05/12

The letters patent expired on 12/05/2012: 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: 11/01/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caxton Paper Mills Limited

NZ

Yhtyneet Paperitehtaat Oy

FI

Inventors

D. N. (pessoa física)

NZ

P. R. (pessoa física)

FI

Technical data

IPC Classification

Priority claims

NZ

211684 · 04/04/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/01/1988

RPI 941

Publicação do pedido de patente

#3.1

12/09/1986

RPI 842

Pedido de patente depositado

#2.1

10/29/1986

RPI 836

Carta-patente expirada

#21.1

Patente extinta em 02/05/2010

12/05/2012

RPI 2187

Concessão da patente

#16.1

05/02/2000

RPI 1530

Deferimento

#9.1

11/23/1999

RPI 1507

Exigência - art. 36 da LPI

#6.1

07/14/1992

RPI 1128

Conhecimento de parecer técnico

#7.1

10/01/1991

RPI 1087

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