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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7405943

Type

Invention Patent

Filing

07/18/1974

Publication

-

Progress at the INPI

  1. Filing07/18/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant05/27/80
  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: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ransburg-Gema Ag

SH

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

09/27/1983

RPI 675

Concessão da patente

#16.1

05/27/1980

RPI 501

Carta-patente expirada

#21.1

11/17/1992

RPI 1146

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