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Official data from INPI

PROCESSO PARA DESLIGNIFICAÇÃO DE MATERIAL DE FIBRA CELULÓSICA PARA MINIMIZAR A QUANTIDADE DE MATERIAL DE REJEIÇÃO NA POLPA FINAL PRODUZIDA E APARELHO PARA O MESMO.

ConcedidaInvention Patent

Application data

Number

PI8002792

Type

Invention Patent

Filing

05/06/1980

Publication

12/22/1981

Progress at the INPI

  1. Filing05/06/80
  2. Publication12/22/81
  3. Examination02/14/84
  4. Allowance04/09/85
  5. Grant08/27/85
  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: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kamyr, Inc.

US

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Inventors

P. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

07/30/1985

RPI 771

Deferimento

#9.1

04/09/1985

RPI 755

8.1

02/26/1985

RPI 749

Exigência - art. 36 da LPI

#6.1

08/21/1984

RPI 722

Solicitação de exame técnico

#4.1

02/14/1984

RPI 695

Publicação do pedido de patente

#3.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

06/13/1995

RPI 1280

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