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Official data from INPI

APARELHO PARA CONFORMAR MACHOS DE VÁLVULA, E, POCESSO PARA CONFORMAR AS BORDASDE RESSALTO, CIRCUNFERENTEMENTE ESPAÇADOS EM UM MACHO DE VÁLVULA

Em AnáliseInvention Patent

Application data

Number

PI8700971

Type

Invention Patent

Filing

02/27/1987

Publication

12/22/1987

Progress at the INPI

  1. Filing02/27/87
  2. Publication12/22/87
  3. Examination03/29/88
  4. Allowance07/12/94
  5. Grant01/31/95
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 03/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Trw Inc.

US

See this company's full portfolio

Inventors

W. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

835,167 · 03/03/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/29/1988

RPI 910

Publicação do pedido de patente

#3.1

12/22/1987

RPI 896

Pedido de patente depositado

#2.1

06/16/1987

RPI 869

Carta-patente expirada

#21.1

Patente extinta em 27/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

01/31/1995

RPI 1261

Notificação para pagamento de retribuição

#13.1

11/08/1994

RPI 1249

Deferimento

#9.1

07/12/1994

RPI 1232

Conhecimento de parecer técnico

#7.1

01/25/1994

RPI 1208

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