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Official data from INPI

COMPOSIÇÃO DE PRATA-FERRO PARA CONTACTOS ELÉTRICOS

PublicadaInvention Patent

Application data

Number

PI8802712

Type

Invention Patent

Filing

06/03/1988

Publication

12/27/1988

Progress at the INPI

  1. Filing06/03/88
  2. Publication12/27/88
  3. Examination03/13/90
  4. Allowance04/30/96
  5. Grant04/29/97
  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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. A. (pessoa física)

DE

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Inventors

D. W. (pessoa física)

DE

R. W. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 37 19 052.0 · 06/06/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/27/1988

RPI 949

Pedido de patente depositado

#2.1

10/25/1988

RPI 940

Carta-patente expirada

#21.1

Patente extinta em 03/06/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/29/1997

RPI 1378

Deferimento

#9.1

04/30/1996

RPI 1326

Solicitação de exame técnico

#4.1

03/13/1990

RPI 1009

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