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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7405526

Type

Invention Patent

Filing

07/04/1974

Publication

-

Progress at the INPI

  1. Filing07/04/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/12/81
  6. Expired11/24/92

The letters patent expired on 11/24/1992: 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: 06/17/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Singerdo Brasil Industria e Comercio Ltda

SP, BR

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

06/17/1986

RPI 817

20.4

06/03/1986

RPI 815

Pedido de licença compulsória

#20.1

05/27/1986

RPI 814

Pedido de licença compulsória

#20.1

06/01/1982

RPI 606

Concessão da patente

#16.1

05/12/1981

RPI 551

Carta-patente expirada

#21.1

11/24/1992

RPI 1147

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