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Official data from INPI

SISTEMA HIDRAULICO DE ALTA PRESSAO E CONJUNTO DE FILTRO DE AUTOLIMPEZA PARA O MESMO

ConcedidaInvention Patent

Application data

Number

PI8306021

Type

Invention Patent

Filing

11/12/1982

Publication

07/10/1984

Progress at the INPI

  1. Filing11/12/82
  2. Publication07/10/84
  3. Examination10/09/84
  4. Allowance10/14/86
  5. Grant06/30/87
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 06/30/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HARNISCHFEGER CORP [US]

Inventors

P. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/30/1987

RPI 871

Notificação para pagamento de retribuição

#13.1

03/10/1987

RPI 855

Deferimento

#9.1

10/14/1986

RPI 834

Exigência - art. 36 da LPI

#6.1

02/25/1986

RPI 801

Solicitação de exame técnico

#4.1

10/09/1984

RPI 729

Publicação do pedido de patente

#3.1

07/10/1984

RPI 716

Pedido de patente depositado

#2.1

01/17/1984

RPI 691

Carta-patente expirada

#21.1

Patente extinta em 01/11/98

08/19/2008

RPI 1963

Pedido de licença compulsória

#20.1

08/27/1991

RPI 1082

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