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Official data from INPI

PROCESSO PARA CONVERTER ECONOMICAMENTE ALIMENTAÇÃO DE ÓLEO EM PRODUTOS MAIS LEVES

Arquivada/ExtintaInvention PatentPCT · US1990001583

Application data

Number

PI9006984

Type

Invention Patent

Filing

03/23/1990

Publication

11/12/1991

PCT

US1990001583

Progress at the INPI

  1. Filing03/23/90
  2. Publication11/12/91
  3. Examination04/07/92
  4. Allowance04/17/01
  5. Grant08/07/01
  6. Expired01/08/13

The letters patent expired on 01/08/2013: 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: 01/08/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ashland Oil, INC.

US

See this company's full portfolio

Inventors

W. J. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

332,079 · 04/03/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 07/08/2011

01/08/2013

RPI 2192

Concessão da patente

#16.1

08/07/2001

RPI 1596

Deferimento

#9.1

04/17/2001

RPI 1580

Exigência - art. 36 da LPI

#6.1

09/26/2000

RPI 1551

Exigência - art. 36 da LPI

#6.1

09/16/1997

RPI 1398

Solicitação de exame técnico

#4.1

04/07/1992

RPI 1114

Notificação de entrada na fase nacional - PCT

#1.3

11/12/1991

RPI 1093

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