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Official data from INPI

PROCESSO PARA REMOCAO E OXIDOS DE NITROGENIO DE GAS DE EXAUSTAO QUE OS CONTEM

ConcedidaInvention Patent

Application data

Number

PI7602858

Type

Invention Patent

Filing

01/07/1976

Publication

-

Progress at the INPI

  1. Filing01/07/76
  2. Publication
  3. Examination
  4. Allowance
  5. Grant01/26/82
  6. Expired08/03/93

The letters patent expired on 08/03/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 01/26/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

FUJI KASUI ENG CO LTD

S. I. (pessoa física)

Inventors

K. M. (pessoa física)

S. T. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

Pedido de licença compulsória

#20.1

03/13/1990

RPI 1009

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