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Official data from INPI

PROCESSO PARA BENEFICIAR XISTO PETROLIFERO.

ConcedidaInvention Patent

Application data

Number

PI8105625

Type

Invention Patent

Filing

09/02/1981

Publication

09/08/1982

Progress at the INPI

  1. Filing09/02/81
  2. Publication09/08/82
  3. Examination09/11/84
  4. Allowance08/13/85
  5. Grant03/25/86
  6. Terminated02/04/92

The patent was granted on 03/25/1986 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: 03/25/1986. 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. P. (pessoa física)

Technical data

IPC Classification

Priority claims

US

220.205 · 12/24/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

12/17/1985

RPI 791

Deferimento

#9.1

08/13/1985

RPI 773

Exigência - art. 36 da LPI

#6.1

02/26/1985

RPI 749

Solicitação de exame técnico

#4.1

09/11/1984

RPI 725

Publicação do pedido de patente

#3.1

09/08/1982

RPI 620

Pedido de patente depositado

#2.1

10/20/1981

RPI 574

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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