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Official data from INPI

APERFEICOAMENTOS INTRODUZIDOS EM BOMBA PARA EXTRACAO DE AREIA

ConcedidaUtility Model
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Application data

Number

MU6400159

Type

Utility Model

Filing

02/06/1984

Publication

09/10/1985
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Progress at the INPI

  1. Filing02/06/84
  2. Publication09/10/85
  3. Examination02/12/86
  4. Allowance10/04/88
  5. Grant07/25/89
  6. Expired10/04/94

The letters patent expired on 10/04/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HEFPEL HIDRO EQUIPAMENTOS LTDA [BR]

Inventors

R. D. (pessoa física)

Technical data

IPC Classification

F04D 1/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Notificação para pagamento de retribuição

#13.1

01/24/1989

RPI 953

Deferimento

#9.1

10/04/1988

RPI 937

Exigência - art. 36 da LPI

#6.1

03/29/1988

RPI 910

Exigência - art. 36 da LPI

#6.1

07/21/1987

RPI 874

Solicitação de exame técnico

#4.1

02/12/1986

RPI 799

Publicação do pedido de patente

#3.1

09/10/1985

RPI 777

Pedido de patente depositado

#2.1

10/02/1984

RPI 728

Carta-patente expirada

#21.1

10/04/1994

RPI 1244

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