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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8101253

Type

Invention Patent

Filing

02/27/1981

Publication

-
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Progress at the INPI

  1. Filing02/27/81
  2. Publication
  3. Examination11/10/81
  4. Allowance09/08/87
  5. Grant04/26/88
  6. Expired03/26/96

The letters patent expired on 03/26/1996: 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: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. C. (pessoa física)

JP

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Inventors

H. Y. (pessoa física)

M. I. (pessoa física)

S. M. (pessoa física)

T. S. (pessoa física)

Technical data

IPC Classification

C22C 38/54

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Deferimento

#9.1

09/08/1987

RPI 881

Exigência - art. 36 da LPI

#6.1

02/17/1987

RPI 852

Conhecimento de parecer técnico

#7.1

12/24/1985

RPI 792

Exigência - art. 36 da LPI

#6.1

06/26/1984

RPI 714

Solicitação de exame técnico

#4.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

03/26/1996

RPI 1321

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