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Official data from INPI

PROCESSO DE PREPARAÇÃO DE UM PÓ DE ALUMINA PURA OU DE ESPINÉLIO ALUMINA-MAGNÉSIA E PÓ DE ALUMINA OU DE ESPINÉLIO ALUMINA MAGNÉSIA

ConcedidaInvention Patent

Application data

Number

PI8203151

Type

Invention Patent

Filing

05/28/1982

Publication

05/17/1983

Progress at the INPI

  1. Filing05/28/82
  2. Publication05/17/83
  3. Examination07/02/85
  4. Allowance11/10/87
  5. Grant05/31/88
  6. Terminated11/29/94

The patent was granted on 05/31/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PCUK - Produits Chimiques Ugine Kuhlmann

FR

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Inventors

M. L. (pessoa física)

FR

R. B. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

81 10872 · 06/02/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

11/10/1987

RPI 890

Exigência - art. 36 da LPI

#6.1

10/21/1986

RPI 835

Solicitação de exame técnico

#4.1

07/02/1985

RPI 767

Publicação do pedido de patente

#3.1

05/17/1983

RPI 656

Pedido de patente depositado

#2.1

07/13/1982

RPI 612

Anuidade - prazo legal encerrado

#18.2

11/29/1994

RPI 1252

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