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Official data from INPI

IMPULSOR PARA UM COMPRESSOR CIENTRÍFUGO

ConcedidaInvention Patent

Application data

Number

PI8204649

Type

Invention Patent

Filing

08/06/1982

Publication

08/02/1983

Progress at the INPI

  1. Filing08/06/82
  2. Publication08/02/83
  3. Examination07/30/85
  4. Allowance06/09/87
  5. Grant11/24/87
  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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Holset Engineering Company Limited

GB

Inventors

P. L. (pessoa física)

GB

P. F. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8124143 · 08/07/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/24/1987

RPI 892

Notificação para pagamento de retribuição

#13.1

09/29/1987

RPI 884

Deferimento

#9.1

06/09/1987

RPI 868

Conhecimento de parecer técnico

#7.1

07/15/1986

RPI 821

Solicitação de exame técnico

#4.1

07/30/1985

RPI 771

Publicação do pedido de patente

#3.1

08/02/1983

RPI 667

Pedido de patente depositado

#2.1

09/21/1982

RPI 622

Carta-patente expirada

#21.1

Patente extinta em 06/08/97

07/01/2008

RPI 1956

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