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Official data from INPI

PROCESSO PARA PREPARAR PARTÍCULAS POLÍMERAS MAGNÉTICAS

ConcedidaInvention Patent

Application data

Number

PI8307583

Type

Invention Patent

Filing

04/27/1983

Publication

09/25/1984

Progress at the INPI

  1. Filing04/27/83
  2. Publication09/25/84
  3. Examination05/13/86
  4. Allowance03/07/89
  5. Grant09/26/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sintef

NO

Inventors

A. B. (pessoa física)

NO

H. B. (pessoa física)

SE

J. U. (pessoa física)

NO

T. E. (pessoa física)

NO

Technical data

IPC Classification

Priority claims

NO

823748 · 11/10/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

07/11/1989

RPI 977

Deferimento

#9.1

03/07/1989

RPI 959

Exigência - art. 36 da LPI

#6.1

09/06/1988

RPI 933

Solicitação de exame técnico

#4.1

05/13/1986

RPI 812

Notificação de entrada na fase nacional - PCT

#1.3

09/25/1984

RPI 727

Carta-patente expirada

#21.1

Patente extinta em 27/04/98

07/01/2008

RPI 1956

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