Official data from INPI

DISPOSITIVO PARA MEDICAO DE VAZAO DE LIQUIDOS EM FLUXOS PULSANTES

Em AnáliseInvention Patent

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Application data

Number

PI8002048

Type

Invention Patent

Filing

04/02/1980

Publication

10/06/1981

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Progress at the INPI

Filing04/02/80
Publication10/06/81
Examination
Allowance02/21/84
Grant09/25/84
Terminated05/16/89

The patent was granted on 09/25/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 05/16/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IPEN SAO PAULO INST PESQUISAS [BR]

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Inventors

A. I. (pessoa física)

Technical data

IPC Classification

F04C 21/00 F04C 9/00 G01F 1/37 G01F 1/72 G01N 1/14

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/16/1989

RPI 969

Cessão de direito de exploração

#22.1

11/26/1985

RPI 788

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/21/1984

RPI 696

Exigência - art. 36 da LPI

#6.1

08/30/1983

RPI 671

Solicitação de exame não realizada

#4.2

06/29/1982

RPI 610

Publicação do pedido de patente

#3.1