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Official data from INPI

PROCESSO E APARELHO PARA TRATAMENTO DE DOCUMENTOS

ConcedidaInvention Patent

Application data

Number

PI7800311

Type

Invention Patent

Filing

02/03/1977

Publication

-

Progress at the INPI

  1. Filing02/03/77
  2. Publication
  3. Examination
  4. Allowance05/31/83
  5. Grant10/25/83
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 10/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. B. (pessoa física)

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Inventors

D. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1983

RPI 679

Deferimento

#9.1

05/31/1983

RPI 658

Exigência - art. 36 da LPI

#6.1

08/24/1982

RPI 618

Exigência - art. 36 da LPI

#6.1

03/02/1982

RPI 593

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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