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Official data from INPI

PROCESSO PARA TRATAMENTO "IN SITU" DE XISTO BETUMINOSO POR AQUECIMENTO EM RETORNA E PROCESSO PARA RECUPERAR ÓLEO DE XIXTO DE UMA PLURALIDADE DE CAMADAS DE XISTO BETUMINOSO FRAGMENTADO

ConcedidaInvention Patent

Application data

Number

PI8201229

Type

Invention Patent

Filing

03/08/1982

Publication

10/25/1983

Progress at the INPI

  1. Filing03/08/82
  2. Publication10/25/83
  3. Examination09/24/85
  4. Allowance06/14/88
  5. Grant03/28/89
  6. Terminated10/16/90

The patent was granted on 03/28/1989 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: 03/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Standard Oil Company

US

See this company's full portfolio

Inventors

L. E. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/28/1989

RPI 962

Notificação para pagamento de retribuição

#13.1

10/04/1988

RPI 937

Deferimento

#9.1

06/14/1988

RPI 921

Republicação - classificação IPC

#15.11

03/24/1987

RPI 857

Solicitação de exame técnico

#4.1

09/24/1985

RPI 779

Publicação do pedido de patente

#3.1

10/25/1983

RPI 679

Pedido de patente depositado

#2.1

04/20/1982

RPI 600

Anuidade - prazo legal encerrado

#18.2

10/16/1990

RPI 1037

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