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Official data from INPI

PROCESSO PARA APERFEIÇOAR AS PROPRIEDADES A BAIXA TEMPERATURA DE COMBUSTÍVEIS DESTILADOS, DE PETRÓLEO E CONCENTRADO DE ADITIVO.

Em AnáliseInvention Patent

Application data

Number

PI8501273

Type

Invention Patent

Filing

03/21/1985

Publication

11/19/1985

Progress at the INPI

  1. Filing03/21/85
  2. Publication11/19/85
  3. Examination10/06/87
  4. Allowance04/02/91
  5. Grant10/29/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 12/01/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Research And Engineering Company

US

See this company's full portfolio

Inventors

K. L. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

84-07403 · 03/22/1984

GB

84-20436 · 08/10/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de certificado de adição de invenção

#5.1

12/01/1987

RPI 893

Solicitação de exame técnico

#4.1

10/06/1987

RPI 885

Publicação do pedido de patente

#3.1

11/19/1985

RPI 787

Pedido de patente depositado

#2.1

06/11/1985

RPI 764

Carta-patente expirada

#21.1

Patente extinta em 21/03/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

10/29/1991

RPI 1091

Notificação para pagamento de retribuição

#13.1

07/16/1991

RPI 1076

Deferimento

#9.1

04/02/1991

RPI 1061

Exigência - art. 36 da LPI

#6.1

10/09/1990

RPI 1036

Exigência - art. 36 da LPI

#6.1

04/24/1990

RPI 1015

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