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Official data from INPI

DISPOSITIVO DE SINAL DE PRESSAO DIFERENCIAL

Em AnáliseInvention Patent

Application data

Number

PI8106575

Type

Invention Patent

Filing

11/24/1980

Publication

06/29/1982

Progress at the INPI

  1. Filing11/24/80
  2. Publication06/29/82
  3. Examination06/26/84
  4. Allowance08/20/85
  5. Grant08/26/86
  6. Terminated07/12/88

The patent was granted on 08/26/1986 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. W. (pessoa física)

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Inventors

B. D. (pessoa física)

R. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

07/12/1988

RPI 925

Concessão da patente

#16.1

08/26/1986

RPI 827

14.1

05/27/1986

RPI 814

Notificação para pagamento de retribuição

#13.1

12/24/1985

RPI 792

Deferimento

#9.1

08/20/1985

RPI 774

Republicação - classificação IPC

#15.11

06/11/1985

RPI 764

Solicitação de exame técnico

#4.1

06/26/1984

RPI 714

Publicação do pedido de patente

#3.1

06/29/1982

RPI 610

Pedido de patente depositado

#2.1

11/24/1981

RPI 579

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