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Official data from INPI

PROCESSO PARA DESCARBONIZAR OU DESMETALIZAR UMA CARGA DE HIDROCARBONETO.

ConcedidaInvention Patent

Application data

Number

PI8102552

Type

Invention Patent

Filing

04/27/1981

Publication

01/05/1982

Progress at the INPI

  1. Filing04/27/81
  2. Publication01/05/82
  3. Examination01/24/84
  4. Allowance08/13/85
  5. Grant03/25/86
  6. Terminated06/20/95

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

Engelhard Minerals & Chemicals Corporation.

Inventors

B. D. (pessoa física)

Technical data

IPC Classification

Priority claims

US

144.477 · 04/28/1980

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

Republicação - classificação IPC

#15.11

08/27/1985

RPI 775

Deferimento

#9.1

08/13/1985

RPI 773

Exigência - art. 36 da LPI

#6.1

10/16/1984

RPI 730

Solicitação de exame técnico

#4.1

01/24/1984

RPI 692

Publicação do pedido de patente

#3.1

01/05/1982

RPI 585

Anuidade - prazo legal encerrado

#18.2

06/20/1995

RPI 1281

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