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Official data from INPI

PROCESSO PARA QUEIMA DE SÓLIDOS PIROLISADOS, PROCESSO PARA RETORTAGEM DE XISTO BETUMINOSO E DISPOSITIVO DE COMBUSTÃO PARA QUEIMA DE XISTO BETUMINISO.

ConcedidaInvention Patent

Application data

Number

PI8201574

Type

Invention Patent

Filing

03/22/1982

Publication

02/08/1983

Progress at the INPI

  1. Filing03/22/82
  2. Publication02/08/83
  3. Examination01/29/85
  4. Allowance06/17/86
  5. Grant12/30/86
  6. Terminated07/18/95

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

Applicants and inventors

Applicants

Chevron Research Company.

US

See this company's full portfolio

Inventors

B. A. (pessoa física)

Technical data

IPC Classification

Priority claims

US

246.555 · 03/23/1981

US

267.137 · 05/26/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/30/1986

RPI 845

Notificação para pagamento de retribuição

#13.1

10/14/1986

RPI 834

Deferimento

#9.1

06/17/1986

RPI 817

Republicação - classificação IPC

#15.11

09/24/1985

RPI 779

Exigência - art. 36 da LPI

#6.1

09/03/1985

RPI 776

Solicitação de exame técnico

#4.1

01/29/1985

RPI 745

Publicação do pedido de patente

#3.1

02/08/1983

RPI 642

Pedido de patente depositado

#2.1

05/11/1982

RPI 603

Anuidade - prazo legal encerrado

#18.2

07/18/1995

RPI 1285

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