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Official data from INPI

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Em AnáliseInvention Patent
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Application data

Number

PI7410534

Type

Invention Patent

Filing

12/17/1974

Publication

-
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Progress at the INPI

  1. Filing12/17/74
  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: 01/05/1988. 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

H02K 23/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

01/05/1988

RPI 898

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

06/22/1982

RPI 609

Carta-patente expirada

#21.1

10/26/1993

RPI 1195

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