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Official data from INPI

PROCESSO PARA PREPARAR UMA COMPOSICAO CATALITICA,COMPOSICAO CATALITICA E SUA APLICACAO

ConcedidaInvention Patent

Application data

Number

PI7603026

Type

Invention Patent

Filing

05/14/1975

Publication

-

Progress at the INPI

  1. Filing05/14/75
  2. Publication
  3. Examination
  4. Allowance01/25/83
  5. Grant05/31/83
  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: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

EXXON RESEARCH ENGINEERING CO

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Inventors

B. A. (pessoa física)

C. J. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

100

01/25/1983

RPI 640

120

06/22/1982

RPI 609

Carta-patente expirada

#21.1

08/03/1993

RPI 1183

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