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Official data from INPI

SISTEMA DE VÁLVULA.

Em AnáliseInvention Patent

Application data

Number

PI8009082

Type

Invention Patent

Filing

06/16/1980

Publication

04/27/1982

Progress at the INPI

  1. Filing06/16/80
  2. Publication04/27/82
  3. Examination10/18/83
  4. Allowance08/21/84
  5. Grant03/26/85
  6. Terminated09/26/89

The patent was granted on 03/26/1985 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caterpillar Tractor Co.

US

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Inventors

E. R. (pessoa física)

M. K. (pessoa física)

Technical data

IPC Classification

Priority claims

US

80/00766 · 06/16/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Pedido de licença compulsória

#20.1

03/22/1988

RPI 909

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

12/11/1984

RPI 738

Deferimento

#9.1

08/21/1984

RPI 722

Exigência - art. 36 da LPI

#6.1

05/08/1984

RPI 707

Solicitação de exame técnico

#4.1

10/18/1983

RPI 678

Notificação de entrada na fase nacional - PCT

#1.3

04/27/1982

RPI 601

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