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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent
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Application data

Number

PI7408653

Type

Invention Patent

Filing

10/17/1974

Publication

-
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Progress at the INPI

  1. Filing10/17/74
  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: 07/06/1982. 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

C07F 7/22

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

07/06/1982

RPI 611

Pedido de licença compulsória

#20.1

06/29/1982

RPI 610

20.4

06/22/1982

RPI 609

Carta-patente expirada

#21.1

10/26/1993

RPI 1195

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