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Official data from INPI

PROCESSO DE EFETUAR DESLIGNIFICACAO DE MATERIAL EM FIBRA CONTENDO LIGNO-CELULOSE, NA EXTRACAO ALCALINA

ConcedidaInvention Patent

Application data

Number

PI8002768

Type

Invention Patent

Filing

05/11/1979

Publication

-

Progress at the INPI

  1. Filing05/11/79
  2. Publication
  3. Examination11/03/82
  4. Allowance07/09/85
  5. Grant02/04/86
  6. Expired06/13/95

The letters patent expired on 06/13/1995: 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: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SCA DEVELOPMENT AB

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Inventors

A. G. (pessoa física)

H. T. (pessoa física)

L. O. (pessoa física)

L. L. (pessoa física)

N. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/04/1986

RPI 798

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

09/04/1984

RPI 724

Exigência - art. 36 da LPI

#6.1

02/28/1984

RPI 697

14.1

11/01/1983

RPI 680

Solicitação de exame técnico

#4.1

11/03/1982

RPI 628

Carta-patente expirada

#21.1

06/13/1995

RPI 1280

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