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Official data from INPI

DIAFRAGMA OBTURADOR.

ConcedidaInvention Patent

Application data

Number

PI8007795

Type

Invention Patent

Filing

11/28/1980

Publication

07/27/1982

Progress at the INPI

  1. Filing11/28/80
  2. Publication07/27/82
  3. Examination04/03/84
  4. Allowance05/07/85
  5. Grant11/26/85
  6. Expired12/26/95

The letters patent expired on 12/26/1995: 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

F. M. (pessoa física)

DE

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Inventors

M. F. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 30 18 482.8 · 05/14/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

Exigência - art. 36 da LPI

#6.1

10/09/1984

RPI 729

Solicitação de exame técnico

#4.1

04/03/1984

RPI 702

Publicação do pedido de patente

#3.1

07/27/1982

RPI 614

Carta-patente expirada

#21.1

12/26/1995

RPI 1308

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