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Official data from INPI

Processo de purificação de um ácido fosfórico impuro.

ConcedidaInvention Patent

Application data

Number

PI8000385

Type

Invention Patent

Filing

01/22/1980

Publication

-

Progress at the INPI

  1. Filing01/22/80
  2. Publication
  3. Examination11/09/82
  4. Allowance09/04/84
  5. Grant03/26/85
  6. Expired05/16/95

The letters patent expired on 05/16/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 03/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

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Inventors

L. A. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

79 01751 · 01/24/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

12/26/1984

RPI 740

Deferimento

#9.1

09/04/1984

RPI 724

Exigência - art. 36 da LPI

#6.1

01/10/1984

RPI 690

Conhecimento de parecer técnico

#7.1

05/31/1983

RPI 658

Solicitação de exame técnico

#4.1

11/09/1982

RPI 629

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

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