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Official data from INPI

APARELHO PARA DESIDRATAR SUSPENSÕES FIBROSAS

ConcedidaInvention Patent

Application data

Number

PI8304830

Type

Invention Patent

Filing

09/05/1983

Publication

04/24/1984

Progress at the INPI

  1. Filing09/05/83
  2. Publication04/24/84
  3. Examination01/28/86
  4. Allowance02/14/89
  5. Grant08/29/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Beloit Walmsley Limited

GB

Inventors

R. A. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8225571 · 09/08/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

07/11/1989

RPI 977

Deferimento

#9.1

02/14/1989

RPI 956

Conhecimento de parecer técnico

#7.1

08/16/1988

RPI 930

Solicitação de exame técnico

#4.1

01/28/1986

RPI 797

Publicação do pedido de patente

#3.1

04/24/1984

RPI 705

Pedido de patente depositado

#2.1

11/08/1983

RPI 681

Carta-patente expirada

#21.1

Patente extinta em 05/09/98

07/01/2008

RPI 1956

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