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Official data from INPI

PROCESSO DE SOLUBILIZAÇÃO PARCIAL DE ROCHAS FOSFÁTICAS E POSTERIOR OBTENÇÃO DE ÁCIDO FOSFÓRICO E FERTILIZANTES FOSFORADOS.

ConcedidaInvention Patent

Application data

Number

PI8105391

Type

Invention Patent

Filing

08/24/1981

Publication

03/29/1983

Progress at the INPI

  1. Filing08/24/81
  2. Publication03/29/83
  3. Examination08/23/83
  4. Allowance08/26/86
  5. Grant06/30/87
  6. In force08/24/01

The patent was granted on 06/30/1987 and is in force until 08/24/2001. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:08/24/2001

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Latest action published by the INPI: 06/30/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

C. C. (pessoa física)

M. G. (pessoa física)

R. A. (pessoa física)

S. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/30/1987

RPI 871

Notificação para pagamento de retribuição

#13.1

12/09/1986

RPI 842

Deferimento

#9.1

08/26/1986

RPI 827

Exigência - art. 36 da LPI

#6.1

12/24/1985

RPI 792

Conhecimento de parecer técnico

#7.1

04/30/1985

RPI 758

Solicitação de exame técnico

#4.1

08/23/1983

RPI 670

Publicação do pedido de patente

#3.1

03/29/1983

RPI 649

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