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Official data from INPI

MONTANTE PARA DISPERSÃO DE PARTÍCULAS SÓLIDAS EM UM GÁS

Em AnáliseInvention Patent

Application data

Number

PI7703997

Type

Invention Patent

Filing

06/20/1977

Publication

-

Progress at the INPI

  1. Filing06/20/77
  2. Publication
  3. Examination
  4. Allowance03/02/82
  5. Grant
  6. Terminated01/21/92

The patent was granted 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: 06/22/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

06/22/1982

RPI 609

Deferimento

#9.1

03/02/1982

RPI 593

Anuidade - prazo legal encerrado

#18.2

01/21/1992

RPI 1103

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