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Official data from INPI

DISPOSITIVO DE SUPRIMENTO DE FLUÍDO E MECANISMO DE VÁLVULA DE CONTROLE.

Em AnáliseInvention Patent

Application data

Number

PI7908878

Type

Invention Patent

Filing

09/11/1979

Publication

-

Progress at the INPI

  1. Filing09/11/79
  2. Publication
  3. Examination03/01/83
  4. Allowance11/08/83
  5. Grant05/29/84
  6. Expired05/09/95

The letters patent expired on 05/09/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/22/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Caterpillar Tractor Company

See this company's full portfolio

Inventors

C. R. (pessoa física)

S. M. (pessoa física)

Technical data

IPC Classification

Priority claims

US

79/00736 · 09/11/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

03/22/1988

RPI 909

16.3

08/21/1984

RPI 722

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

02/28/1984

RPI 697

Deferimento

#9.1

11/08/1983

RPI 681

Solicitação de exame técnico

#4.1

03/01/1983

RPI 645

Carta-patente expirada

#21.1

05/09/1995

RPI 1275

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