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Official data from INPI

VÁLVULA DE ENTRADA EM MOTOR DE COMBUSTÃO INTERNA

PublicadaInvention Patent

Application data

Number

PI8800774

Type

Invention Patent

Filing

02/24/1988

Publication

10/04/1988

Progress at the INPI

  1. Filing02/24/88
  2. Publication10/04/88
  3. Examination04/09/91
  4. Allowance02/11/92
  5. Grant01/26/93
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 10/04/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Warr Valves, Inc

US

Inventors

W. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

017.851 · 02/24/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/04/1988

RPI 937

Pedido de patente depositado

#2.1

05/10/1988

RPI 916

Carta-patente expirada

#21.1

Patente extinta em 24/02/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

01/26/1993

RPI 1156

Notificação para pagamento de retribuição

#13.1

06/30/1992

RPI 1126

Deferimento

#9.1

02/11/1992

RPI 1106

15.9

04/09/1991

RPI 1062

Solicitação de exame técnico

#4.1

04/09/1991

RPI 1062

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