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Official data from INPI

PROCESSO PARA A FABRICACAO DE UMA ESTRUTURA SUPERFICIAL POROSA DE FIBRAS DE VIDRO,TENDO ESTABILIDADE DE FORMA E RESISTENTE AO CALOR E A CORROSAO BEM COMO ESTRUTURA PRODUZIDA DE ACORDO COM O MESMO

ConcedidaInvention Patent

Application data

Number

PI7703928

Type

Invention Patent

Filing

06/17/1976

Publication

-

Progress at the INPI

  1. Filing06/17/76
  2. Publication
  3. Examination
  4. Allowance11/30/82
  5. Grant06/28/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SULZER AG

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Inventors

K. V. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

05/10/1983

RPI 655

Deferimento

#9.1

11/30/1982

RPI 632

Exigência - art. 36 da LPI

#6.1

01/12/1982

RPI 586

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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