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Official data from INPI

Aperfeiçoamento em sistema de processamento de material de cimento cru contendo combustível de alto teor volável e em forno de tratamento térmico de material para execução do processo.

Em AnáliseInvention Patent

Application data

Number

PI7702119

Type

Invention Patent

Filing

04/04/1977

Publication

-

Progress at the INPI

  1. Filing04/04/77
  2. Publication
  3. Examination
  4. Allowance07/13/82
  5. Grant01/25/83
  6. Terminated12/08/87

The patent was granted on 01/25/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Allis - Chalmers Corporation

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Inventors

H. G. (pessoa física)

Technical data

IPC Classification

Priority claims

US

674.062 · 04/05/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/08/1987

RPI 894

Concessão da patente

#16.1

01/25/1983

RPI 640

Notificação para pagamento de retribuição

#13.1

11/30/1982

RPI 632

Deferimento

#9.1

07/13/1982

RPI 612

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