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Official data from INPI

DISPOSITIVO DE DIFUSAO DE MEMBRANAS

Em AnáliseInvention Patent

Application data

Number

PI7903441

Type

Invention Patent

Filing

07/20/1978

Publication

-

Progress at the INPI

  1. Filing07/20/78
  2. Publication
  3. Examination03/16/82
  4. Allowance03/01/83
  5. Grant10/25/83
  6. Terminated06/24/86

The patent was granted on 10/25/1983 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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

B. L. (pessoa física)

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Inventors

B. D. (pessoa física)

M. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/24/1986

RPI 818

Cessão de direito de exploração

#22.1

06/04/1985

RPI 763

Concessão da patente

#16.1

10/25/1983

RPI 679

Notificação para pagamento de retribuição

#13.1

06/21/1983

RPI 661

Deferimento

#9.1

03/01/1983

RPI 645

Solicitação de exame técnico

#4.1

03/16/1982

RPI 595

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