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Official data from INPI

VÁLVULA DE SILÍCIO.

DeferidaInvention Patent

Application data

Number

PI8600322

Type

Invention Patent

Filing

01/27/1986

Publication

10/07/1986

Progress at the INPI

  1. Filing01/27/86
  2. Publication10/07/86
  3. Examination07/28/87
  4. Allowance08/29/89
  5. Grant05/29/90
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ford Motor Company

US

See this company's full portfolio

Inventors

J. K. (pessoa física)

US

J. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

703.962 · 02/21/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

08/29/1989

RPI 984

Republicação - classificação IPC

#15.11

05/02/1989

RPI 967

Exigência - art. 36 da LPI

#6.1

02/28/1989

RPI 958

Solicitação de exame técnico

#4.1

07/28/1987

RPI 875

Publicação do pedido de patente

#3.1

10/07/1986

RPI 833

Pedido de patente depositado

#2.1

07/22/1986

RPI 822

Carta-patente expirada

#21.1

Patente extinta em 27/01/2001

07/22/2008

RPI 1959

22.2

10/21/1997

RPI 1403

Concessão da patente

#16.1

05/29/1990

RPI 1020

Notificação para pagamento de retribuição

#13.1

01/09/1990

RPI 1001

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