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Official data from INPI

CATALIZADOR PARA A DECOMPOSICAO DE HIDRAZINA E PROCESSO DE PRODUCAO RESPECTIVA

ConcedidaInvention Patent

Application data

Number

PI7805222

Type

Invention Patent

Filing

08/14/1978

Publication

-

Progress at the INPI

  1. Filing08/14/78
  2. Publication
  3. Examination
  4. Allowance01/24/84
  5. Grant08/28/84
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 08/28/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SHELL OIL CO

Inventors

A. W. (pessoa física)

R. L. (pessoa física)

V. H. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/28/1984

RPI 723

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/24/1984

RPI 692

Exigência - art. 36 da LPI

#6.1

01/11/1983

RPI 638

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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