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Official data from INPI

PROCESSO PARA LIQUEFAÇÃO DE UM CARVÃO DE CLASSIFICAÇÃO INFERIOR, OU MATERIAL CARBONÁCEO SÓLIDO SIMILAR.

Em AnáliseInvention Patent

Application data

Number

PI7907382

Type

Invention Patent

Filing

11/13/1979

Publication

-

Progress at the INPI

  1. Filing11/13/79
  2. Publication
  3. Examination09/14/82
  4. Allowance01/10/84
  5. Grant07/31/84
  6. Terminated05/17/88

The patent was granted on 07/31/1984 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: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Research And Engineering Company

US

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Inventors

G. M. (pessoa física)

P. S. (pessoa física)

S. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

20.603 · 03/15/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Republicação - classificação IPC

#15.11

05/02/1984

RPI 706

Republicação - classificação IPC

#15.11

02/07/1984

RPI 694

Deferimento

#9.1

01/10/1984

RPI 690

Solicitação de exame técnico

#4.1

09/14/1982

RPI 621

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