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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7406316

Type

Invention Patent

Filing

08/01/1974

Publication

-

Progress at the INPI

  1. Filing08/01/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant02/22/83
  6. Expired11/17/92

The letters patent expired on 11/17/1992: 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: 05/07/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. F. (pessoa física)

DE

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Inventors

E. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

320

05/07/1985

RPI 759

300

01/15/1985

RPI 743

201

09/11/1984

RPI 725

Pedido de licença voluntária

#17.1

04/17/1984

RPI 704

Concessão da patente

#16.1

02/22/1983

RPI 644

110

11/03/1982

RPI 628

Carta-patente expirada

#21.1

11/17/1992

RPI 1146

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