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Official data from INPI

Aparelho de descarga de material aperfeiçoado para uso em moinho rotativo.

Em AnáliseInvention Patent

Application data

Number

PI7702448

Type

Invention Patent

Filing

04/18/1977

Publication

-

Progress at the INPI

  1. Filing04/18/77
  2. Publication
  3. Examination
  4. Allowance06/01/82
  5. Grant11/30/82
  6. Terminated12/08/87

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: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Allis - Chalmers Corporation

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Inventors

E. B. (pessoa física)

Technical data

IPC Classification

Priority claims

US

673.166 · 04/19/1976

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

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

09/21/1982

RPI 622

Deferimento

#9.1

06/01/1982

RPI 606

Exigência - art. 36 da LPI

#6.1

10/20/1981

RPI 574

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