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Official data from INPI

ESTRUTURA DE VÁLVULA PILOTO MECÂNICA E OPERADA POR FLUIDO COMBINADA

Arquivada/ExtintaInvention PatentPCT · US1988002856

Application data

Number

PI8807916

Type

Invention Patent

Filing

08/26/1988

Publication

05/14/1991

PCT

US1988002856

Progress at the INPI

  1. Filing08/26/88
  2. Publication05/14/91
  3. Examination06/15/93
  4. Allowance05/31/94
  5. Grant11/29/94
  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: 09/02/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. C. (pessoa física)

US

Inventors

N. J. (pessoa física)

US

R. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 26/08/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

11/29/1994

RPI 1252

Notificação para pagamento de retribuição

#13.1

10/04/1994

RPI 1244

Deferimento

#9.1

05/31/1994

RPI 1226

Solicitação de exame técnico

#4.1

06/15/1993

RPI 1176

Notificação de entrada na fase nacional - PCT

#1.3

05/14/1991

RPI 1067

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