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Official data from INPI

PROCESSO PARA A CONVERSÃO DE ALIMENTAÇÃO DE ÓLEO DE HIDROCARBONETOS

Arquivada/ExtintaInvention PatentPCT · US1988001357

Application data

Number

PI8807044

Type

Invention Patent

Filing

04/22/1988

Publication

10/17/1989

PCT

US1988001357

Progress at the INPI

  1. Filing04/22/88
  2. Publication10/17/89
  3. Examination11/27/90
  4. Allowance03/31/98
  5. Grant11/24/98
  6. Expired12/11/12

The letters patent expired on 12/11/2012: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chevron Research Company

US

See this company's full portfolio

Inventors

A. K. (pessoa física)

US

P. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

047,084 · 05/05/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

10/17/1989

RPI 991

Carta-patente expirada

#21.1

Patente extinta em 24/11/2008

12/11/2012

RPI 2188

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

03/31/1998

RPI 1423

Exigência - art. 36 da LPI

#6.1

11/12/1996

RPI 1354

Exigência - art. 36 da LPI

#6.1

12/12/1995

RPI 1306

Solicitação de exame técnico

#4.1

11/27/1990

RPI 1043

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