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Official data from INPI

PROCESSO PARA FABRICACAO DE FOSGENIO

DeferidaInvention Patent
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Application data

Number

PI7600029

Type

Invention Patent

Filing

01/08/1975

Publication

-
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Progress at the INPI

  1. Filing01/08/75
  2. Publication
  3. Examination
  4. Allowance04/13/82
  5. Grant
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 06/22/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. T. (pessoa física)

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento (variante)

#9.1.2

06/22/1982

RPI 609

Deferimento

#9.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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