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Official data from INPI

VÁLVULA DOSADORA EQUILIBRADA POR PRESSÃO PRIMÁRIA

Arquivada/ExtintaInvention PatentPCT · US1988002893

Application data

Number

PI8807890

Type

Invention Patent

Filing

08/22/1988

Publication

11/20/1990

PCT

US1988002893

Progress at the INPI

  1. Filing08/22/88
  2. Publication11/20/90
  3. Examination06/18/91
  4. Allowance01/26/93
  5. Grant06/29/93
  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: 09/02/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Allied-Signal Inc

US

See this company's full portfolio

Inventors

D. C. (pessoa física)

US

R. G. (pessoa física)

US

W. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

160.784 · 02/18/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 22/08/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

05/11/1993

RPI 1171

Deferimento

#9.1

01/26/1993

RPI 1156

Solicitação de exame técnico

#4.1

06/18/1991

RPI 1072

Solicitação de exame não realizada

#4.2

04/09/1991

RPI 1062

Notificação de entrada na fase nacional - PCT

#1.3

11/20/1990

RPI 1042

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