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Official data from INPI

PLACA OBTURADORA DE MATERIAL REFRATÁRIO COMO CERÂMICA PARA FECHOS CORREDIÇOS LINEARES OU GIRATÓRIOS.

Em AnáliseInvention Patent

Application data

Number

PI8406427

Type

Invention Patent

Filing

12/14/1984

Publication

10/15/1985

Progress at the INPI

  1. Filing12/14/84
  2. Publication10/15/85
  3. Examination01/06/87
  4. Allowance08/08/89
  5. Grant03/20/90
  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.

Talk to a specialist

Latest action published by the INPI: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Didier-Werke AG

DE

See this company's full portfolio

Inventors

U. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 33 45 539.2 · 12/16/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

12/05/1989

RPI 998

Deferimento

#9.1

08/08/1989

RPI 981

6.2

07/26/1988

RPI 927

Solicitação de exame técnico

#4.1

01/06/1987

RPI 846

Publicação do pedido de patente

#3.1

10/15/1985

RPI 782

Pedido de patente depositado

#2.1

02/26/1985

RPI 749

Carta-patente expirada

#21.1

Patente extinta em 14/12/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

03/20/1990

RPI 1010

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