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Official data from INPI

PROCESSO PARA SEPARAÇÃO DE MAGNÉSIO SOLÚVEL DE ÁCIDO SUPERFOSFÓRICO DE PROCESSO ÚMIDO

ConcedidaInvention Patent

Application data

Number

PI8303468

Type

Invention Patent

Filing

06/29/1983

Publication

02/12/1985

Progress at the INPI

  1. Filing06/29/83
  2. Publication02/12/85
  3. Examination06/25/85
  4. Allowance09/06/88
  5. Grant08/29/89
  6. Terminated05/02/95

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

Stauffer Chemical Company

US

See this company's full portfolio

Inventors

A. P. (pessoa física)

US

Technical data

IPC Classification

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

12/27/1988

RPI 949

Deferimento

#9.1

09/06/1988

RPI 933

Exigência - art. 36 da LPI

#6.1

03/15/1988

RPI 908

Solicitação de exame técnico

#4.1

06/25/1985

RPI 766

Publicação do pedido de patente

#3.1

02/12/1985

RPI 747

Pedido de patente depositado

#2.1

08/09/1983

RPI 668

Anuidade - prazo legal encerrado

#18.2

05/02/1995

RPI 1274

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