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Official data from INPI

COMPOSTOS E COMPOSICOES

ConcedidaInvention Patent

Application data

Number

PI7805949

Type

Invention Patent

Filing

09/13/1977

Publication

-

Progress at the INPI

  1. Filing09/13/77
  2. Publication
  3. Examination
  4. Allowance03/01/83
  5. Grant09/27/83
  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: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ICI AUSTRALIA LTD

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Inventors

S. A. (pessoa física)

W. R. (pessoa física)

W. K. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

06/21/1983

RPI 661

Deferimento

#9.1

03/01/1983

RPI 645

Exigência - art. 36 da LPI

#6.1

08/03/1982

RPI 615

6.2

11/10/1981

RPI 577

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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