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Official data from INPI

PROCESSO PARA REFINACAO,COM SOLVENTE,DE UMA CARGA DE OLEO LUBRIFICANTE A BASE DE PETROLEO E PROCESSO PARA SEPARACAO DE UMA FRACAO RICA EM AROMATICOS DE UMA MISTURA DE ALIMENTACAO DE HIDROCARBONETOS LIQUIDOS

ConcedidaInvention Patent

Application data

Number

PI8104314

Type

Invention Patent

Filing

07/17/1980

Publication

03/23/1982

Progress at the INPI

  1. Filing07/17/80
  2. Publication03/23/82
  3. Examination06/29/82
  4. Allowance06/05/84
  5. Grant12/26/84
  6. Terminated02/04/92

The patent was granted on 12/26/1984 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: 12/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TEXACO DEVELOPMENT CORP [US]

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Inventors

W. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/26/1984

RPI 740

Notificação para pagamento de retribuição

#13.1

10/02/1984

RPI 728

Deferimento

#9.1

06/05/1984

RPI 711

Solicitação de exame técnico

#4.1

06/29/1982

RPI 610

Publicação do pedido de patente

#3.1

03/23/1982

RPI 596

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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