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Official data from INPI

PROCESSO PARA SEPARAR PARTICULAS DE XISTO OU CARVAO DE UM XISTO RETIRADO DE MINA(RDM)QUE CONTEM PARTICULAS DE XISTO E PARTICULAS DE REJEITO

Em AnáliseInvention Patent

Application data

Number

PI7902374

Type

Invention Patent

Filing

04/19/1978

Publication

-

Progress at the INPI

  1. Filing04/19/78
  2. Publication
  3. Examination10/20/81
  4. Allowance02/08/83
  5. Grant08/30/83
  6. Terminated06/14/88

The patent was granted on 08/30/1983 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

OCCIDENTAL RES CORP

Inventors

M. D. (pessoa física)

M. B. (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

08/30/1983

RPI 671

Notificação para pagamento de retribuição

#13.1

06/07/1983

RPI 659

Deferimento

#9.1

02/08/1983

RPI 642

Exigência - art. 36 da LPI

#6.1

07/20/1982

RPI 613

Solicitação de exame técnico

#4.1

10/20/1981

RPI 574

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