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Official data from INPI

PROCESSO DE ABSORCAO PRATICAMENTE COMPLETA DE COMPOSTOS FLUORADOS PRINCIPALMENTE HF,SIF4 PRESENTES EM MISTURAS GASOSAS

Em AnáliseInvention Patent

Application data

Number

PI7607349

Type

Invention Patent

Filing

11/04/1975

Publication

-

Progress at the INPI

  1. Filing11/04/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant03/17/87
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 11/22/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. I. (pessoa física)

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Inventors

D. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

201

11/22/1988

RPI 944

Pedido de licença voluntária

#17.1

05/17/1988

RPI 917

Concessão da patente

#16.1

03/17/1987

RPI 856

110

07/22/1986

RPI 822

Recurso

#12.1

12/22/1981

RPI 583

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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