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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8405920

Type

Invention Patent

Filing

11/21/1984

Publication

09/17/1985

Progress at the INPI

  1. Filing11/21/84
  2. Publication09/17/85
  3. Examination05/27/86
  4. Allowance03/01/88
  5. Grant09/27/88
  6. Expired07/08/08

The letters patent expired on 07/08/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TRW Ehrenreich Gmbh & Co. Kg

DE

See this company's full portfolio

Inventors

M. U. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1988

RPI 936

Notificação para pagamento de retribuição

#13.1

06/21/1988

RPI 922

Deferimento

#9.1

03/01/1988

RPI 906

Solicitação de exame técnico

#4.1

05/27/1986

RPI 814

Publicação do pedido de patente

#3.1

09/17/1985

RPI 778

Pedido de patente depositado

#2.1

02/05/1985

RPI 746

Carta-patente expirada

#21.1

Patente extinta em 21/11/99

07/08/2008

RPI 1957

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