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Official data from INPI

PROCESSO PARA PRODUCAO DE IMIDAS CICLICAS,DE MALEIMIDA E MALEMIDAS N-SUBSTITUIDAS,DE DINITRILAS E DE FUMARONITRILA E MALEONITRILA

ConcedidaInvention Patent

Application data

Number

PI8206638

Type

Invention Patent

Filing

12/21/1981

Publication

10/04/1983

Progress at the INPI

  1. Filing12/21/81
  2. Publication10/04/83
  3. Examination01/10/84
  4. Allowance07/08/86
  5. Grant04/28/87
  6. Terminated10/16/90

The patent was granted on 04/28/1987 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: 04/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

STANDARD OIL CO [US]

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Inventors

M. C. (pessoa física)

W. T. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/28/1987

RPI 862

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

06/04/1985

RPI 763

Solicitação de exame técnico

#4.1

01/10/1984

RPI 690

Publicação do pedido de patente

#3.1

10/04/1983

RPI 676

Pedido de patente depositado

#2.1

01/11/1983

RPI 638

Anuidade - prazo legal encerrado

#18.2

10/16/1990

RPI 1037

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