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Official data from INPI

PROCESSO DE EQUILIBRIO DAS PRESSOES REDUZIDAS DOS FLUIDOS CONTIDOS NAS CAMADAS DE TERRENO QUE SE COMUNICAM COM UM POCO,ESTRUTURA PARA APLICACAO DO PROCESSO;E CESTO PARA ESTRUTURAS

Em AnáliseInvention Patent

Application data

Number

PI7807048

Type

Invention Patent

Filing

10/27/1977

Publication

-

Progress at the INPI

  1. Filing10/27/77
  2. Publication
  3. Examination
  4. Allowance05/04/82
  5. Grant11/30/82
  6. Terminated06/14/88

The patent was granted on 11/30/1982 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. F. (pessoa física)

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Inventors

M. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

15.0

06/01/1982

RPI 606

Deferimento

#9.1

05/04/1982

RPI 602

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