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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE POLIOLEFINAS SULFOMALEADAS E PROCESSO PARA CONTROLAR A VISCOSIDADE DE LÍQUIDOS ORGÂNICOS.

Em AnáliseInvention Patent

Application data

Number

PI8604498

Type

Invention Patent

Filing

09/19/1986

Publication

05/19/1987

Progress at the INPI

  1. Filing09/19/86
  2. Publication05/19/87
  3. Examination01/31/89
  4. Allowance07/20/93
  5. Grant02/16/94
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 01/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxonmobil Research and Engineering Company

US

Exxon Research And Engineering Company

US

See this company's full portfolio

Inventors

F. F. (pessoa física)

US

S. B. (pessoa física)

US

W. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

778.269 · 09/20/1985

US

809.030 · 12/16/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

01/31/1989

RPI 954

Publicação do pedido de patente

#3.1

05/19/1987

RPI 865

Pedido de patente depositado

#2.1

03/24/1987

RPI 857

Carta-patente expirada

#21.1

Patente extinta em 19/09/2001

07/22/2008

RPI 1959

Alteração de nome deferida

#25.4

Alterado de Exxon Research and Enginnering Company.

06/19/2001

RPI 1589

Concessão da patente

#16.1

02/16/1994

RPI 1211

Deferimento

#9.1

07/20/1993

RPI 1181

Exigência - art. 36 da LPI

#6.1

07/07/1992

RPI 1127

Exigência - art. 36 da LPI

#6.1

09/17/1991

RPI 1085

6.2

08/07/1990

RPI 1027

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