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Official data from INPI

PROCESSO PARA PREPARAR COPOLÍMEROS DE MONÔMEROS DE VINIL AROMÁTICO COM NITRILAS ETRILENICAMENTE NÃO SATURADAS.

ConcedidaInvention Patent

Application data

Number

PI8104177

Type

Invention Patent

Filing

01/30/1981

Publication

03/16/1982

Progress at the INPI

  1. Filing01/30/81
  2. Publication03/16/82
  3. Examination05/08/84
  4. Allowance06/17/86
  5. Grant03/31/87
  6. Terminated03/19/96

The patent was granted on 03/31/1987 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: 03/31/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Montedison S.p.A.

IT

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Inventors

A. N. (pessoa física)

T. A. (pessoa física)

Technical data

Priority claims

IT

23182 A/80 · 07/02/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/31/1987

RPI 858

Notificação para pagamento de retribuição

#13.1

10/14/1986

RPI 834

Deferimento

#9.1

06/17/1986

RPI 817

Exigência - art. 36 da LPI

#6.1

09/03/1985

RPI 776

Pedido de certificado de adição de invenção

#5.1

09/25/1984

RPI 727

Solicitação de exame técnico

#4.1

05/08/1984

RPI 707

5.2

12/07/1982

RPI 633

Publicação do pedido de patente

#3.1

03/16/1982

RPI 595

Anuidade - prazo legal encerrado

#18.2

03/19/1996

RPI 1320

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