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Official data from INPI

COMPOSIÇÃO DE SILANA/ANCHIMENTO, PROCESSO PARA A SUA PREPARAÇÃO E EMPREGO DA MESMA.

ConcedidaInvention Patent

Application data

Number

PI8005064

Type

Invention Patent

Filing

08/12/1980

Publication

-

Progress at the INPI

  1. Filing08/12/80
  2. Publication
  3. Examination06/14/83
  4. Allowance05/17/88
  5. Grant10/25/88
  6. Expired09/19/95

The letters patent expired on 09/19/1995: 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: 10/25/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. A. (pessoa física)

DE

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Inventors

G. H. (pessoa física)

R. L. (pessoa física)

W. S. (pessoa física)

Technical data

Priority claims

DE

P 29 33 346.8 · 08/17/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1988

RPI 940

Notificação para pagamento de retribuição

#13.1

09/06/1988

RPI 933

Deferimento

#9.1

05/17/1988

RPI 917

Exigência - art. 36 da LPI

#6.1

09/22/1987

RPI 883

Solicitação de exame técnico

#4.1

06/14/1983

RPI 660

Carta-patente expirada

#21.1

09/19/1995

RPI 1294

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