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Official data from INPI

PROCESSOS CONTÍNUOS PARA A RETORTAGEM DE XISTO OLEÍGENO E DE SÓLIDOS CONTENDO CARBONO EM PARTÍCULAS.

Em AnáliseInvention Patent

Application data

Number

PI8105910

Type

Invention Patent

Filing

09/15/1981

Publication

06/08/1982

Progress at the INPI

  1. Filing09/15/81
  2. Publication06/08/82
  3. Examination06/12/84
  4. Allowance03/11/86
  5. Grant09/30/86
  6. Terminated07/12/88

The patent was granted on 09/30/1986 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chevron Research Company.

US

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Inventors

S. B. (pessoa física)

W. P. (pessoa física)

Technical data

IPC Classification

Priority claims

US

187.858 · 09/17/1980

US

271.297 · 06/08/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

07/12/1988

RPI 925

Concessão da patente

#16.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

07/01/1986

RPI 819

Deferimento

#9.1

03/11/1986

RPI 803

Exigência - art. 36 da LPI

#6.1

03/26/1985

RPI 753

Solicitação de exame técnico

#4.1

06/12/1984

RPI 712

Publicação do pedido de patente

#3.1

06/08/1982

RPI 607

Pedido de patente depositado

#2.1

10/27/1981

RPI 575

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