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Official data from INPI

MÉTODO DE PREPARAÇÃO DE ALUMINA PARA EMPREGO COMO CATALISADOR.

ConcedidaInvention Patent

Application data

Number

PI8000330

Type

Invention Patent

Filing

01/18/1980

Publication

-

Progress at the INPI

  1. Filing01/18/80
  2. Publication
  3. Examination02/24/82
  4. Allowance03/07/84
  5. Grant09/25/84
  6. Expired05/16/95

The letters patent expired on 05/16/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

A. V. (pessoa física)

D. A. (pessoa física)

D. C. (pessoa física)

F. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

09/25/1984

RPI 727

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/26/1984

RPI 714

Deferimento

#9.1

03/07/1984

RPI 698

Exigência - art. 36 da LPI

#6.1

08/30/1983

RPI 671

Solicitação de exame técnico

#4.1

02/24/1982

RPI 592

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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