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Official data from INPI

catalizador para a produção de anidrido ftálico.

ConcedidaInvention Patent

Application data

Number

PI8101886

Type

Invention Patent

Filing

03/30/1981

Publication

10/06/1981

Progress at the INPI

  1. Filing03/30/81
  2. Publication10/06/81
  3. Examination11/08/83
  4. Allowance12/26/84
  5. Grant08/27/85
  6. Expired09/24/96

The letters patent expired on 09/24/1996: 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: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alusuisse Italia S.p.A.

IT

Inventors

A. N. (pessoa física)

C. L. (pessoa física)

S. G. (pessoa física)

Technical data

Priority claims

IT

21134 A/80 · 04/02/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

04/16/1985

RPI 756

Deferimento

#9.1

12/26/1984

RPI 740

Exigência - art. 36 da LPI

#6.1

05/22/1984

RPI 709

Solicitação de exame técnico

#4.1

11/08/1983

RPI 681

Publicação do pedido de patente

#3.1

10/06/1981

RPI 572

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

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