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Official data from INPI

CATALISADOR PARA OXIDACAO DE HIDROCARBONETOS GASOSOS E MONOXIDO DE CARBONO E REDUCAO DE OXIDOS DE NITROGENIO,E PROCESSO PARA REAGIR OS CONTAMINANTES NOS GASES DE ESCAPAMENTO DA COMBUSTAO

ConcedidaInvention Patent

Application data

Number

PI7605638

Type

Invention Patent

Filing

08/27/1975

Publication

-

Progress at the INPI

  1. Filing08/27/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant07/27/82
  6. Terminated09/18/90

The patent was granted on 07/27/1982 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/27/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ENGELHARD MIN & CHEM

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Inventors

K. C. (pessoa física)

M. W. (pessoa física)

M. J. (pessoa física)

T. C. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/27/1982

RPI 614

14.1

04/13/1982

RPI 599

Anuidade - prazo legal encerrado

#18.2

09/18/1990

RPI 1033

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