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Official data from INPI

PROCESSO PARA A REFINAÇÃO DE UMA CORRENTE DE T- BUTILES TIRENO CONTENDO ISOPROPENILESTIRENO.

Em AnáliseInvention Patent

Application data

Number

PI8504170

Type

Invention Patent

Filing

08/29/1985

Publication

06/24/1986

Progress at the INPI

Awaiting grant fee payment
  1. Filing08/29/85
  2. Publication06/24/86
  3. Examination03/08/88
  4. Allowance02/04/92
  5. Grant
  6. In force

The application was allowed by the INPI on 02/04/1992. The grant of the letters patent is being processed.

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Latest action published by the INPI: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

El Paso Products Company

Inventors

G. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

646.267 · 08/31/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.1

08/29/1989

RPI 984

Solicitação de exame técnico

#4.1

03/08/1988

RPI 907

Publicação do pedido de patente

#3.1

06/24/1986

RPI 818

Pedido de patente depositado

#2.1

11/12/1985

RPI 786

Retificação

#15.3

06/16/1992

RPI 1124

Deferimento

#9.1

02/04/1992

RPI 1105

14.11

05/01/1990

RPI 1016

14.4

02/13/1990

RPI 1006

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