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Official data from INPI

SISTEMA PRESSURIZADO PARA LAVAR O BRANQUEAMENTO DE PASTAS CELULOSICAS.

Em AnáliseInvention Patent

Application data

Number

PI7904496

Type

Invention Patent

Filing

07/12/1979

Publication

-

Progress at the INPI

  1. Filing07/12/79
  2. Publication
  3. Examination03/22/83
  4. Allowance04/24/84
  5. Grant12/26/84
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 09/03/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. C. (pessoa física)

SP, BR

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Inventors

S. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

09/03/1985

RPI 776

20.7

08/27/1985

RPI 775

Concessão da patente

#16.1

12/26/1984

RPI 740

Notificação para pagamento de retribuição

#13.1

08/21/1984

RPI 722

Deferimento

#9.1

04/24/1984

RPI 705

Exigência - art. 36 da LPI

#6.1

09/27/1983

RPI 675

Solicitação de exame técnico

#4.1

03/22/1983

RPI 648

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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