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Official data from INPI

PROCESSO DE EXTRAÇÃO COM SOLVENTE, E, PROCESSO PARA PREPARAR UMA MISTURA DE ÓXIDOS DE FOSFINA

ConcedidaInvention Patent

Application data

Number

PI8403631

Type

Invention Patent

Filing

07/20/1984

Publication

07/02/1985

Progress at the INPI

  1. Filing07/20/84
  2. Publication07/02/85
  3. Examination06/23/87
  4. Allowance03/07/89
  5. Grant09/26/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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

Cyanamid Canada Inc.

CA

Inventors

A. R. (pessoa física)

W. R. (pessoa física)

CA

Technical data

Priority claims

CA

432,929-5 · 07/21/1983

CA

444,795-6 · 01/06/1984

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

09/27/1988

RPI 936

Solicitação de exame técnico

#4.1

06/23/1987

RPI 870

Publicação do pedido de patente

#3.1

07/02/1985

RPI 767

Pedido de patente depositado

#2.1

10/02/1984

RPI 728

Carta-patente expirada

#21.1

Patente extinta em 20/07/99

07/08/2008

RPI 1957

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