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Official data from INPI

VÁLVULA DE SINAL PARA SISTEMA COMPENSADO DE PRESSÃO.

ConcedidaInvention Patent

Application data

Number

PI8307666

Type

Invention Patent

Filing

01/24/1983

Publication

12/11/1984

Progress at the INPI

  1. Filing01/24/83
  2. Publication12/11/84
  3. Examination08/19/86
  4. Allowance08/25/87
  5. Grant09/27/88
  6. Terminated04/30/96

The patent was granted on 09/27/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caterpillar, Inc.

US

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Inventors

L. H. (pessoa física)

Technical data

IPC Classification

Priority claims

US

83/00105 · 01/24/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1988

RPI 936

14.1

07/19/1988

RPI 926

Notificação para pagamento de retribuição

#13.1

12/15/1987

RPI 895

Deferimento

#9.1

08/25/1987

RPI 879

Solicitação de exame técnico

#4.1

08/19/1986

RPI 826

Notificação de entrada na fase nacional - PCT

#1.3

12/11/1984

RPI 738

Anuidade - prazo legal encerrado

#18.2

04/30/1996

RPI 1326

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