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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE ÁCIDO ISO- OU TEREFTÁLICO

ConcedidaInvention Patent

Application data

Number

PI8103606

Type

Invention Patent

Filing

06/08/1981

Publication

03/02/1982

Progress at the INPI

  1. Filing06/08/81
  2. Publication03/02/82
  3. Examination05/08/84
  4. Allowance07/08/86
  5. Grant03/17/87
  6. Terminated09/25/90

The patent was granted on 03/17/1987 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: 03/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

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Inventors

N. S. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8018918 · 06/10/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/17/1987

RPI 856

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

11/05/1985

RPI 785

Exigência - art. 36 da LPI

#6.1

01/08/1985

RPI 742

Solicitação de exame técnico

#4.1

05/08/1984

RPI 707

Publicação do pedido de patente

#3.1

03/02/1982

RPI 593

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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