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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent
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Application data

Number

PI7405525

Type

Invention Patent

Filing

07/04/1974

Publication

-
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Progress at the INPI

  1. Filing07/04/74
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  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.

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Latest action published by the INPI: 01/06/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. D. (pessoa física)

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

01/06/1987

RPI 846

20.7

01/06/1987

RPI 846

Pedido de licença compulsória

#20.1

12/30/1986

RPI 845

20.3

05/27/1986

RPI 814

Pedido de licença compulsória

#20.1

06/01/1982

RPI 606

Carta-patente expirada

#21.1

10/26/1993

RPI 1195

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