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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8101510

Type

Invention Patent

Filing

03/13/1981

Publication

-
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Progress at the INPI

  1. Filing03/13/81
  2. Publication
  3. Examination09/20/83
  4. Allowance12/16/86
  5. Grant07/28/87
  6. Expired09/24/96

The letters patent expired on 09/24/1996: 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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

J. D. (pessoa física)

DE

Inventors

D. J. (pessoa física)

Technical data

IPC Classification

C14B 1/58

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/28/1987

RPI 875

Notificação para pagamento de retribuição

#13.1

05/05/1987

RPI 863

Deferimento

#9.1

12/16/1986

RPI 843

Exigência - art. 36 da LPI

#6.1

04/01/1986

RPI 806

Exigência - art. 36 da LPI

#6.1

05/28/1985

RPI 762

Exigência - art. 36 da LPI

#6.1

01/02/1985

RPI 741

6.2

07/31/1984

RPI 719

Solicitação de exame técnico

#4.1

09/20/1983

RPI 674

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

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