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Official data from INPI

PROCESSO E EQUIPAMENTO PARA EXTRACAO CONTINUA POR SOLVANCIA SOB PRESSAO

ConcedidaInvention Patent
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Application data

Number

PI8003788

Type

Invention Patent

Filing

06/18/1980

Publication

11/10/1981
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Progress at the INPI

  1. Filing06/18/80
  2. Publication11/10/81
  3. Examination10/19/82
  4. Allowance08/21/84
  5. Grant04/30/85
  6. Terminated07/26/94

The patent was granted on 04/30/1985 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. T. (pessoa física)

Inventors

C. F. (pessoa física)

Technical data

IPC Classification

B01D 11/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

12/11/1984

RPI 738

Deferimento

#9.1

08/21/1984

RPI 722

Exigência - art. 36 da LPI

#6.1

02/21/1984

RPI 696

Solicitação de exame técnico

#4.1

02/16/1983

RPI 643

11.7

12/21/1982

RPI 635

Solicitação de exame técnico

#4.1

10/19/1982

RPI 626

Solicitação de exame não realizada

#4.2

02/16/1982

RPI 591

Publicação antecipada

#3.2

11/10/1981

RPI 577

Anuidade - prazo legal encerrado

#18.2

07/26/1994

RPI 1234

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