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Official data from INPI

PROCESSO PARA A PURIFICAÇÃO DE ÁCIDO FOSFÓRICO EM PROCESSO POR VIA ÚMIDA

ConcedidaInvention Patent

Application data

Number

PI8306875

Type

Invention Patent

Filing

12/14/1983

Publication

07/24/1984

Progress at the INPI

  1. Filing12/14/83
  2. Publication07/24/84
  3. Examination08/12/86
  4. Allowance01/03/89
  5. Grant08/29/89
  6. Terminated05/30/95

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

H. A. (pessoa física)

DE

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Inventors

D. H. (pessoa física)

DE

D. S. (pessoa física)

DE

D. G. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 32 46 415.0 · 12/15/1982

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

05/16/1989

RPI 969

Deferimento

#9.1

01/03/1989

RPI 950

Exigência - art. 36 da LPI

#6.1

06/28/1988

RPI 923

6.2

06/30/1987

RPI 871

Solicitação de exame técnico

#4.1

08/12/1986

RPI 825

Publicação do pedido de patente

#3.1

07/24/1984

RPI 718

Pedido de patente depositado

#2.1

02/21/1984

RPI 696

Anuidade - prazo legal encerrado

#18.2

05/30/1995

RPI 1278

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