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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI7604835

Type

Invention Patent

Filing

07/23/1976

Publication

-

Progress at the INPI

  1. Filing07/23/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant02/24/82
  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.

Talk to a specialist

Latest action published by the INPI: 02/23/1988. 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).

18.8

02/23/1988

RPI 905

Anuidade - prazo legal encerrado

#18.2

11/17/1987

RPI 891

20.4

09/30/1986

RPI 832

20.7

09/23/1986

RPI 831

Concessão da patente

#16.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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