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Official data from INPI

COMPOSIÇÃO DE CIMENTO E PROCESSO DE PREPARAR A MESMA

ConcedidaInvention Patent

Application data

Number

PI7901121

Type

Invention Patent

Filing

02/21/1979

Publication

-

Progress at the INPI

  1. Filing02/21/79
  2. Publication
  3. Examination10/27/81
  4. Allowance02/12/85
  5. Grant08/27/85
  6. Terminated01/28/92

The patent was granted on 08/27/1985 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: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

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Inventors

D. D. (pessoa física)

O. D. (pessoa física)

S. M. (pessoa física)

W. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

08/21/1984

RPI 722

Exigência - art. 36 da LPI

#6.1

12/20/1983

RPI 687

6.2

03/01/1983

RPI 645

Solicitação de exame técnico

#4.1

10/27/1981

RPI 575

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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