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Official data from INPI

PROCESSO DE ACIDULAÇÃO PARCIAL DE ROCHA FOSFÁTICA.

Em AnáliseInvention Patent
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Application data

Number

PI8005441

Type

Invention Patent

Filing

08/28/1980

Publication

11/17/1981
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Progress at the INPI

  1. Filing08/28/80
  2. Publication11/17/81
  3. Examination02/24/82
  4. Allowance06/19/84
  5. Grant11/27/84
  6. Terminated08/02/94

The patent was granted on 11/27/1984 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: 05/16/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ARAXÁ S.A. FERTILIZANTES E PRODUTOS QUÍMICOS

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Inventors

P. A. (pessoa física)

Technical data

IPC Classification

C01B 25/01

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

05/16/1989

RPI 969

20.4

06/28/1988

RPI 923

20.7

06/28/1988

RPI 923

Cessão de direito de exploração

#22.1

12/10/1985

RPI 790

Concessão da patente

#16.1

11/27/1984

RPI 736

Deferimento

#9.1

06/19/1984

RPI 713

8.1

03/20/1984

RPI 700

Republicação - classificação IPC

#15.11

02/21/1984

RPI 696

Exigência - art. 36 da LPI

#6.1

11/08/1983

RPI 681

Solicitação de exame técnico

#4.1

02/24/1982

RPI 592

Publicação antecipada

#3.2

11/17/1981

RPI 578

Anuidade - prazo legal encerrado

#18.2

08/02/1994

RPI 1235

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