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Official data from INPI

PROCESSO PARA A PRODUÇÃO DE PRODUTOS DE VERMICULITA SÓLIDOS, SUSPENSÃO DE LAMELAS DE VERMICULITAS, COMPOSIÇÃO EM FORMA DE PÓ SECO, E, TABLETES

ConcedidaInvention Patent

Application data

Number

PI8307246

Type

Invention Patent

Filing

12/29/1983

Publication

11/13/1984

Progress at the INPI

  1. Filing12/29/83
  2. Publication11/13/84
  3. Examination09/23/86
  4. Allowance01/24/89
  5. Grant08/29/89
  6. Terminated02/18/92

The patent was granted on 08/29/1989 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

See this company's full portfolio

Inventors

G. C. (pessoa física)

GB

I. H. (pessoa física)

GB

K. M. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8305318 · 02/25/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

05/30/1989

RPI 971

Deferimento

#9.1

01/24/1989

RPI 953

Exigência - art. 36 da LPI

#6.1

08/02/1988

RPI 928

6.2

06/23/1987

RPI 870

Solicitação de exame técnico

#4.1

09/23/1986

RPI 831

Publicação do pedido de patente

#3.1

11/13/1984

RPI 734

Pedido de patente depositado

#2.1

03/13/1984

RPI 699

Anuidade - prazo legal encerrado

#18.2

02/18/1992

RPI 1107

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