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Official data from INPI

COMPOSICOES DE PRECIPITACAO GRANULADAS DE ACIDO SILICIO,PROCESSO PARA A SUA PREPARACAO E EMPREGO DAS MESMAS

Em AnáliseInvention Patent

Application data

Number

PI7900467

Type

Invention Patent

Filing

01/30/1978

Publication

-

Progress at the INPI

  1. Filing01/30/78
  2. Publication
  3. Examination
  4. Allowance08/09/83
  5. Grant02/28/84
  6. Terminated01/28/92

The patent was granted on 02/28/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 07/10/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DEGUSSA

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Inventors

K. E. (pessoa física)

K. A. (pessoa física)

N. P. (pessoa física)

T. G. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

07/10/1984

RPI 716

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

11/29/1983

RPI 684

Deferimento

#9.1

08/09/1983

RPI 668

15.0

05/18/1982

RPI 604

Exigência - art. 36 da LPI

#6.1

03/23/1982

RPI 596

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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