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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7410658

Type

Invention Patent

Filing

12/18/1974

Publication

-

Progress at the INPI

  1. Filing12/18/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant03/30/82
  6. Expired10/26/93

The letters patent expired on 10/26/1993: 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: 08/21/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. D. (pessoa física)

Inventors

E. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

08/21/1984

RPI 722

20.4

08/14/1984

RPI 721

20.4

08/07/1984

RPI 720

Concessão da patente

#16.1

03/30/1982

RPI 597

14.1

10/20/1981

RPI 574

Carta-patente expirada

#21.1

10/26/1993

RPI 1195

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